Ford Ecosport Owners and Service Manuals

Ford Ecosport: Wipers and Washers / Diagnosis and Testing - Wipers and Washers

Ford Ecosport 2014-2024 Service and Repair Manual / Body and Paint / Wipers and Washers / Diagnosis and Testing - Wipers and Washers


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

DTC Chart: BCM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

DTC Description Action
B130F:12 Run Accessory Control: Circuit Short To Battery   GO to Pinpoint Test A
B130F:14 Run Accessory Control: Circuit Short To Ground or Open
  • If the windshield wipers are inoperative, GO to Pinpoint Test A
  • If the windshield wipers operate with the ignition OFF, GO to Pinpoint Test D
All other DTCs -  

DTC Chart: SCCM

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

DTC Description Action
B10AD:01 Rain Sensor: General Electrical Failure   GO to Pinpoint Test F
B10AD:02 Rain Sensor: General Signal Failure   GO to Pinpoint Test F
B10AD:08 Rain Sensor: Bus Signal/Message Failure   GO to Pinpoint Test F
B10AD:49 Rain Sensor: Internal Electronic Failure INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers, Removal and Installation).
B10AD:55 Rain Sensor: Not Configured CARRY OUT the PMI for the SCCM using as built data.
B10AD:9A Rain Sensor: Component or System Operating Conditions DIAGNOSE the symptom present with the rain sensitive (Auto Wiper) feature. REFER to the Symptom Chart in this section.
B1131:01 Wiper motor module: General Electrical Failure   GO to Pinpoint Test F
B1131:02 Wiper motor module: General Signal Failure
  • If the wipers are inoperative, or no symptom is present, GO to Pinpoint Test A
  • If the wipers are always on, GO to Pinpoint Test D
B1131:08 Wiper motor module: Bus Signal / Message Failure   GO to Pinpoint Test B
B1131:49 Wiper motor module: Internal Electronic Failure
  • INSTALL a new windshield wiper motor.
    REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
B1131:55 Wiper motor module: Not Configured CARRY OUT the PMI for the SCCM using as built data.
B1131:9A Wiper motor module: Component or System Operating Conditions DIAGNOSE the symptom present with the wiper/washer system. REFER to the Symptom Chart in this section.
B124E:11 Wiper Stalk Switch Pack: Circuit Short To Ground
  • INSTALL a new RH steering column multifunction switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
    If the concern still exists, INSTALL a new SCCM .
    REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
B124E:13 Wiper Stalk Switch Pack: Circuit Open
  • INSTALL a new RH steering column multifunction switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
    If the concern still exists, INSTALL a new SCCM .
    REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
B124E:55 Wiper Stalk Switch Pack: Not Configured
  • INSTALL a new RH steering column multifunction switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
    If the concern still exists, INSTALL a new SCCM .
    REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
B124E:96 Wiper Stalk Switch Pack: Component Internal Failure
  • INSTALL a new RH steering column multifunction switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
    If the concern still exists, INSTALL a new SCCM .
    REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
B124E:9E Wiper Stalk Switch Pack: Stuck On
  • INSTALL a new RH steering column multifunction switch.
    REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
    If the concern still exists, INSTALL a new SCCM .
    REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
All other DTCs -  

Symptom Chart

Symptom Chart: Wiper and Washer

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Symptom Chart


Condition Actions
Wiper blade performance concerns - poor cleaning, streaking, or chatter
  • GO to Pinpoint Test P
All windshield wiper modes are inoperative
  • GO to Pinpoint Test A
The intermittent and/or low speed windshield wipers are inoperative
  • GO to Pinpoint Test B
The high speed windshield wipers are inoperative
  • GO to Pinpoint Test C
The windshield wipers stay on continuously
  • GO to Pinpoint Test D
The windshield wipers do not operate correctly in the intermittent mode
  • GO to Pinpoint Test E
The rain sensitive wiper (auto wiper) feature is inoperative
  • GO to Pinpoint Test F
The rain sensitive wipers (auto wipers) have erratic/inconsistent operation
  • GO to Pinpoint Test F
The rain sensitive wipers (auto wipers) are too sensitive/not sensitive enough to moisture
  • GO to Pinpoint Test F
The windshield wipers do not park at the correct position
  • GO to Pinpoint Test G
The windshield washer is inoperative
  • GO to Pinpoint Test H
The windshield washer is always on
  • GO to Pinpoint Test I
One or more rear window wiper modes are inoperative
  • GO to Pinpoint Test J
The rear window wiper stays on continuously
  • GO to Pinpoint Test K
The rear window washer is inoperative
  • GO to Pinpoint Test L
The rear window washer is always on
  • GO to Pinpoint Test M
The heated wiper park feature is inoperative
  • GO to Pinpoint Test N
The heated wiper park feature is always on
  • GO to Pinpoint Test O

Pinpoint Tests


PINPOINT TEST A: ALL WINDSHIELD WIPER MODES ARE INOPERATIVE

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B130F:12 Run Accessory Control: Circuit Short To Battery Sets when the BCM detects a short to voltage from the wiper relay control circuit.
BCM B130F:14 Run Accessory Control: Circuit Short To Ground Or Open Sets when the BCM detects an open from the wiper relay control circuit.
SCCM B1131:02 Wiper motor module: General Signal Failure Sets when the input to the windshield wiper motor from the fail-safe circuit does not match the requested input from the SCCM .

Possible Sources

  • Fuse
  • Windshield Wiper Relay
  • Wiring, terminals or connectors
  • BJB
  • Wiper/washer switch
  • Windshield wiper motor
  • SCCM
  • BCM

Visual Inspection and Pre-checks

  • Verify BJB fuse 63 (25A) is OK.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

A1 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B130F:12, B130F:14 OR SCCM (STEERING COLUMN CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1131:02
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the BCM self-test.
  • Using a diagnostic scan tool, carry out the SCCM self-test.

Is DTC B130F:12, B130F:14 or B1131:02 present?
Yes For DTC B130F:12, GO to A2
For DTC B130F:14, GO to A4
For DTC B1131:02, GO to A12
No GO to A6

A2 CHECK THE WIPER RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C2280E-20   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to A16

A3 CHECK THE WIPER RELAY
  • Ignition OFF.
  • Disconnect Wiper Relay.
  • Carry out the component test on the wiper relay.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Did the wiper relay pass the component test?
Yes GO to A4
No INSTALL a new wiper relay.

A4 CHECK THE WIPER RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect BCM C2280E .
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2280E-20   Ground

Is the resistance less than 3 ohms?
Yes REPAIR the circuit.
No GO to A5

A5 CHECK THE WIPER RELAY CONTROL CIRCUIT FOR AN OPEN
  • Measure:
    Positive Lead Measurement / Action Negative Lead
      C2280E-20 Wiper relay, cavity 2

Is the resistance less than 3 ohms?
Yes GO to A16
No REPAIR the circuit.

A6 CHECK THE INPUT TO THE SCCM (STEERING COLUMN CONTROL MODULE) USING THE WIPER/WASHER SWITCH PARAMETER IDENTIFICATIONS (PIDS)
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the following SCCM wiper/washer switch Parameter Identifications (PIDs):
    • F_WASH_SW (Washer Switch (Front))
    • F_WIP_INT_D1 (Front Wiper Intermittent Data 1)
    • F_WIP_INT_D2 (Front Wiper Intermittent Data 2)
    • F_WIP_INT_D3 (Front Wiper Intermittent Data 3)
    • F_WIP_SLO_SW (Front Wiper Command Low Speed)
    • F_WIPE_FAST_SW (Front Wiper Command High Speed)
    • WIPE_SINGLE (Single Wipe Stroke)
  • Cycle the wiper/washer switch from off to the high speed setting and then back to off.

Do the Parameter Identifications (PIDs) correspond correctly with each setting selection?
Yes GO to A7
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

A7 CHECK FOR VOLTAGE TO THE WINDSHIELD WIPER MOTOR
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-8   Ground

Is the voltage greater than 11 volts?
Yes GO to A11
No VERIFY the BJB fuse 63 (25A) is OK. If OK, GO to A8
If not OK, REFER to the Wiring Diagrams Manual to identify the possible cause of the circuit short.

A8 CHECK THE WIPER RELAY
  • Ignition OFF.
  • Disconnect Wiper Relay.
  • Carry out the component test on the wiper relay.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Did the wiper relay pass the component test?
Yes GO to A9
No INSTALL a new wiper relay.

A9 CHECK THE WINDSHIELD WIPER MOTOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect Windshield wiper relay.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-8 Wiper relay, cavity 5

Is the resistance less than 3 ohms?
Yes GO to A10
No REPAIR the circuit.

A10 CHECK THE WINDSHIELD WIPER RELAY VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    Wiper relay, cavity 3   Ground
    Wiper relay, cavity 1   Ground

Are both voltages greater than 11 volts?
Yes GO to A16
No REPAIR the circuit in question.

A11 CHECK THE WINDSHIELD WIPER MOTOR GROUND CIRCUIT FOR AN OPEN
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-8   C1655-6

Is the voltage greater than 11 volts?
Yes GO to A12
No REPAIR the circuit.

A12 CHECK THE FAIL-SAFE HIGH SPEED WIPER GROUND CIRCUIT CONTROL

NOTICE: The following Pinpoint Test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-1   C1655-8
  • Ignition ON.
  • Place the wiper/washer switch in the high speed setting and then off.

Does the test lamp illuminate when the wiper/washer switch is in the high speed setting?
Yes GO to A14
No GO to A13

A13 CHECK THE FAIL-SAFE HIGH SPEED WIPER GROUND CIRCUIT FOR AN OPEN

NOTE: If steps A2-A11 did not identify the cause of the concern, a double fault is present. After the fail-safe ground is diagnosed and repaired, it is necessary check all operation modes and diagnose any symptom still present.

  • Ignition OFF.
  • Disconnect SCCM C226A .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-1   C226A-3

Is the resistance less than 3 ohms?
Yes INSTALL a new RH multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to A15
No REPAIR the circuit.

A14 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

A15 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect all the SCCM connectors:
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the SCCM connectors. Make sure they seat and latch correctly.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

A16 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors:
  • Repair:
    • corrosion (install new connector or terminals – clean module pins)
    • damaged or bent pins – install new terminals/pins
    • pushed-out pins – install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.
No The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST B: THE INTERMITTENT AND/OR LOW SPEED WINDSHIELD WIPERS ARE INOPERATIVE

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM B1131:08 Wiper motor module: Bus Signal/Message Failures Sets when the SCCM detects a communication fault with the windshield wiper motor over the LIN .

Possible Sources

  • Wiring, terminals or connectors
  • Wiper/washer switch
  • Windshield wiper motor
  • Rain sensor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.

NOTE: It may be necessary to disconnect and then reconnect the battery after the repair to enable the wiper operation.

B1 CHECK THE HIGH SPEED WIPER OPERATION
  • Ignition ON.
  • Place the wiper/washer switch in the high speed setting and observe the windshield wipers. Place the wiper/washer switch in the off setting.

Do the windshield wipers operate with the wiper/washer switch in the high speed setting?
Yes GO to B2
No GO to Pinpoint Test A

B2 CHECK THE LOW SPEED WIPER OPERATION
  • Place the wiper/washer switch in the low speed setting and observe the windshield wipers. Place the wiper/washer switch in the off setting.

Do the windshield wipers operate with the wiper/washer switch in the low speed setting?
Yes If not equipped with a rain sensor, GO to Pinpoint Test E
If equipped with a rain sensor, GO to Pinpoint Test F
No GO to B3

B3 CHECK THE INPUT TO THE SCCM (STEERING COLUMN CONTROL MODULE)
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the following SCCM F_WIP_SLO_SW PID .
  • Place the wiper/washer switch in the low speed setting.

Does the PID indicate the wiper/washer switch is in the low speed setting?
Yes If equipped with a rain sensor, GO to B4
If not equipped with a rain sensor, GO to B5
No INSTALL a new RH sttering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

B4 ISOLATE THE RAIN SENSOR
  • Ignition OFF.
  • Disconnect Rain Sensor C914 .
  • Ignition ON.
  • Place the wiper/washer switch in the low speed setting and observe the windshield wipers. Place the wiper/washer switch in the off setting.

Do the windshield wipers operate with the wiper/washer switch in the low speed setting?
Yes INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers, Removal and Installation).
No GO to B5

B5 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Disconnect SCCM C226A .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-4   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to B6

B6 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-4   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to B7
No REPAIR the circuit.

B7 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-4   C226A-2

Is the resistance less than 3 ohms?
Yes GO to B8
No REPAIR the circuit.

B8 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to B9
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

B9 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect all the SCCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCCM connectors. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST C: THE HIGH SPEED WINDSHIELD WIPERS ARE INOPERATIVE

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Windshield wiper motor
  • Wiper/washer switch
  • SCCM
C1 CHECK THE INPUT TO THE SCCM (STEERING COLUMN CONTROL MODULE)
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the SCCM F_WIPE_FAST_SW PID .
  • Place the wiper/washer switch in the high speed setting.

Does the PID indicate the wiper/washer switch is in the high speed setting?
Yes INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No INSTALL a new RH multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

PINPOINT TEST D: THE WINDSHIELD WIPERS STAY ON CONTINUOUSLY

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B130F:14 Run Accessory Control: Circuit Short To Ground Or Open Sets when the BCM detects a short to ground from the wiper relay control circuit.
SCCM B1131:02 Wiper motor module: General Signal Failure Sets when the input to the windshield wiper motor from the fail-safe circuit does not match the requested input from the SCCM .

Possible Sources

  • Wiring, terminals or connectors
  • Wiper/washer switch
  • Windshield wiper relay
  • BJB
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.
D1 CHECK THE WINDSHIELD WIPER OPERATION WITH THE IGNITION OFF
  • Ignition OFF.
  • Observe the windshield wiper operation.

Do the windshield wipers operate with the ignition off?
Yes GO to D5
No GO to D2

D2 CHECK THE WINDSHIELD WIPER OPERATION WITH THE SCCM (STEERING COLUMN CONTROL MODULE) DISCONNECTED
  • Ignition OFF.
  • Disconnect SCCM C226A .
  • Ignition ON.
  • Observe the windshield wiper operation.

Do the windshield wipers continue to operate?
Yes GO to D3
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, GO to D8

D3 CHECK THE HIGH SPEED FAIL-SAFE CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-1   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to D4
No REPAIR the circuit.

D4 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

D5 CHECK FOR BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B130F:14
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the BCM self-test.

Is DTC B130F:14 present?
Yes GO to D6
No GO to D7

D6 CHECK THE WIPER RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND
  • Disconnect BCM C2280E .
  • Disconnect Wiper Relay .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    Wiper relay, cavity 2   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to D9
No REPAIR the circuit.

D7 CHECK THE WINDSHIELD WIPER SYSTEM VOLTAGE SUPPLY CIRCUITS FOR A SHORT TO VOLTAGE
  • Disconnect Wiper Relay .
  • Observe the windshield wiper operation.

Does the windshield wiper motor continue to operate?
Yes REPAIR the circuit.
No INSTALL a new wiper relay.

D8 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect all the SCCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the SCCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new SCCM . SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

D9 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all the BCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new BCM. Refer to the appropriate Removal and Installation procedure in Section 419-10.
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST E: THE WINDSHIELD WIPERS DO NOT OPERATE CORRECTLY IN THE INTERMITTENT MODE

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiper/washer switch
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.
E1 VERIFY IF THE VEHICLE IS EQUIPPED WITH A RAIN SENSOR
  • Inspect the vehicle for a rain sensor.

Is the vehicle equipped with a rain sensor?
Yes GO to E2
No GO to E3

E2 VERIFY THE RAIN SENSITIVE WIPER (AUTO WIPER) FEATURE IS DISABLED IN THE VEHICLE MESSAGE CENTER
  • Ignition ON.
  • Access the vehicle settings in the message center using the steering wheel controls and check the rain sensitive feature setting.

Is the rain sensitive feature enabled?
Yes GO to Pinpoint Test F
No GO to E3

E3 CHECK THE LOW SPEED WIPER OPERATION
  • Ignition ON.
  • Place the wiper/washer switch to the low speed setting and observe the windshield wipers. Place the wiper/washer switch to the off setting.

Do the low speed wipers operate when the low speed setting is selected?
Yes GO to E4
No GO to Pinpoint Test B

E4 CHECK THE INPUT FROM THE WIPER/ WASHER SWITCH
  • Using a diagnostic scan tool, view the SCCM PID .
  • Using a diagnostic scan tool, view the following SCCM wiper/washer switch PIDs :
    • F_WIP_INT_D1 (Front Wiper Intermittent Data 1)
    • F_WIP_INT_D2 (Front Wiper Intermittent Data 2)
    • F_WIP_INT_D3 (Front Wiper Intermittent Data 3)
  • Cycle the wiper/washer switch from off through each of the intermittent settings.

Do the PIDs correspond correctly with each setting selection?
Yes INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No INSTALL a new RH steering
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
.
TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

PINPOINT TEST F: THE RAIN SENSITIVE WIPER FEATURE IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
SCCM B10AD:01 Rain Sensor: General Electrical Failure Sets when the SCCM detects a communication fault with the rain sensor.
SCCM B10AD:02 Rain Sensor: General Signal Failure Sets when the SCCM detects a communication fault with the rain sensor.
SCCM B10AD:08 Rain Sensor: Bus Signal/Message Failures Sets when the SCCM detects a communication fault with the rain sensor.

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Rain sensitive feature not enabled
  • Foreign material on windshield, such as dirt, dust or bugs
  • Wiper blades
  • Windshield glass
  • Wiper/washer switch
  • Windshield wiper motor
  • Rain sensor gel-type lens (part of rain sensor)
  • Rain sensor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect BJB fuse 15 (5A) and make sure it is OK.
  • Inspect the windshield for damage.
  • Inspect the rain sensor mounting for damage.
F1 CHECK THE LOW SPEED WIPER OPERATION
  • Ignition ON.
  • Place the wiper/washer switch to the low speed setting and observe the windshield wipers. Place the wiper/washer switch to the off setting.

Do the low speed wipers operate when the low speed setting is selected?
Yes GO to F2
No GO to Pinpoint Test B

F2 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) B10AD:01, B10AD:02 OR B10AD:08
  • Using a diagnostic scan tool, carry out the SCCM self-test.

Are any Diagnostic Trouble Codes (DTCs) present?
Yes For DTC B10AD:02 or B10AD:08, GO to F11
For all other Diagnostic Trouble Codes (DTCs), REFER to the SCCM DTC Chart in this section.
No GO to F3

F3 VERIFY THE RAIN SENSITIVE WIPER FEATURE IS ENABLED IN THE VEHICLE MESSAGE CENTER
  • Access the vehicle settings in the message center using the steering wheel controls. Make sure the rain sensitive feature is enabled.

Is the rain sensitive feature enabled?
Yes GO to F4
No ENABLE the rain sensitive (auto wiper) feature. INFORM the customer how to enable/disable the rain sensitive (auto wiper) feature.

F4 CHECK THE INPUT FROM THE WIPER/WASHER SWITCH
  • Using a diagnostic scan tool, monitor the following SCCM wiper/washer switch PIDs:
    • F_WIP_INT_D1 (Front Wiper Intermittent Data 1)
    • F_WIP_INT_D2 (Front Wiper Intermittent Data 2)
    • F_WIP_INT_D3 (Front Wiper Intermittent Data 3)
  • Cycle the wiper/washer switch from off through each of the auto/intermittent sensitivity settings.

Do the Parameter Identifications (PIDs) correspond correctly with each setting selection?
Yes GO to F5
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

F5 CHECK THE WINDSHIELD FOR DAMAGE
  • Ignition OFF.
  • Inspect the windshield glass for any cracks, pits or other visible damage around the area of the rain sensor.

Is any windshield damage present near the area of the rain sensor?
Yes INSTALL a new windshield. REFER to: Windshield Glass (501-11 Glass, Frames and Mechanisms, Removal and Installation).
No GO to F6

F6 CHECK THE WINDSHIELD GLASS FOR STREAKING
  • Ignition ON.
  • Turn the wiper/washer switch to the low speed wiper setting and while applying water to the windshield surface. Observe the wipe quality, especially around the area of the rain sensor.

Is any streaking present on the windshield around the area of the rain sensor?
Yes GO to F7
No GO to F9

F7 CHECK THE WINDSHIELD WIPER BLADES FOR STREAKING
  • Ignition OFF.
  • Clean the windshield glass with glass cleaner.
  • Clean the wiper blades with isopropyl alcohol swabs. Wipe the entire length of the wiper blades.
  • Ignition ON.
  • Place the wiper/washer switch to the low speed wiper setting and while applying water to the windshield surface. Observe the wipe quality, especially around the area of the rain sensor.

Was there noticeable improvement in the wipe quality after cleaning the glass and the wiper blades?
Yes GO to F8
No INSTALL new wiper blades. GO to F8

F8 RECHECK THE RAIN SENSITIVE WIPERS OPERATION
  • Place the wiper/washer switch to the auto/intermittent 5 setting (most sensitive to moisture) while applying water on the windshield above the rain sensor.

Do the wipers operate when water is applied to the windshield surface?
Yes The system is operating correctly at this time. The concern may have been caused by poor wipe quality on the windshield around the rain sensor.
No GO to F9

F9 CHECK FOR THE PRESENCE OF THE LENS GEL
  • Ignition OFF.
  • Lightly press the rain sensor against the windshield and release the rain sensor clips.

Does the rain sensor remain adhered to the windshield?
Yes ATTACH the retaining clips. GO to F10
No The sensor gel-type lens is missing or damaged. INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers, Removal and Installation).

F10 INSPECT THE RAIN SENSOR MOUNTING AREA

NOTE: The rain sensor gel-type lens can be damaged or contaminated during rain sensor removal, rain sensor bracket separation or incorrect installation.

  • From the outside of the vehicle, inspect the area of the windshield glass where the rain sensor is mounted. The rain sensor contact area should appear black, with no bubbles, air pockets or contaminants between the windshield glass and the rain sensor.

Does the rain sensor contact area appear black, with no bubbles, air pockets or contaminants between the windshield glass and the rain sensor?
Yes GO to F11
No REMOVE the rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).

F11 CHECK FOR VOLTAGE TO THE RAIN SENSOR
  • Ignition OFF.
  • Disconnect Rain Sensor C914 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-1   Ground

Is the voltage greater than 11 volts?
Yes GO to F12
No VERIFY BJB fuse 15 (5A) is OK. If OK,GO to F12
If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

F12 CHECK THE RAIN SENSOR GROUND CIRCUIT FOR AN OPEN
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-1   C914-3

Is the voltage above 11 volts?
Yes GO to F13
No REPAIR the circuit.

F13 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect SCCM C226A .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C914-2   C226A-2

Is the resistance less than 3 ohms?
Yes GO to F14
No REPAIR the circuit.

F14 CHECK FOR CORRECT SCCM (STEERING COLUMN CONTROL MODULE) OPERATION
  • Disconnect and inspect all the SCCM connectors.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect all the SCCM connectors. Make sure they seat and latch correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST G: THE WINDSHIELD WIPERS DO NOT PARK AT THE CORRECT POSITION

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiper mounting arm and pivot shaft
  • Windshield wiper motor

Visual Inspection and Pre-checks

  • Inspect the mounting arm and pivot shaft for damage.
G1 CHECK THE WIPER PIVOT ARM AND SHAFT FOR DAMAGE
  • Ignition OFF.
  • Inspect the wiper pivot arm and shaft for damage.

Is the wiper pivot arm and shaft OK?
Yes GO to G2
No INSTALL a wiper pivot arm or pivot shaft (part of linkage assembly).
REFER to: Windshield Wiper Pivot Arm (501-16 Wipers and Washers, Removal and Installation).
REFER to: Wiper Linkage Assembly (501-16 Wipers and Washers, Removal and Installation).

G2 CHECK THE WINDSHIELD WIPER PARK RELAY OPERATION
  • Ignition ON.
  • Place the wiper/washer switch to the low speed setting. When the wiper blades are in the middle of a wipe, place the wiper/washer switch off.

Do the windshield wipers immediately stop when the wiper/washer switch is turned off?
Yes INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No ADJUST the pivot arms.
REFER to: Windshield Wiper Pivot Arm (501-16 Wipers and Washers, Removal and Installation).

PINPOINT TEST H: THE WINDSHIELD WASHER IS INOPERATIVE

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Washer pump
  • Wiper/washer switch
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

H1 CHECK FOR WASHER PUMP ACTIVATION
  • Ignition ON.
  • While listening for washer pump activation near the right front of the vehicle, have an assistant activate the windshield washer function.

Does the washer pump activate?
Yes GO to H2
No GO to H6

H2 CHECK THE AMBIENT AIR TEMPERATURE
  • Check the ambient air temperature.

Is the ambient air temperature below freezing?
Yes GO to H3
No GO to H4

H3 CHECK THE WASHER SOLVENT
  • Check the washer solvent and make sure it is of the correct type to use for the temperature conditions present.

Is the correct type of washer solvent present?
Yes GO to H4
No ALLOW the vehicle to warm to room temperature. DRAIN and REFILL the windshield washer reservoir with the correct washer solvent type. INFORM the customer of the correct type of washer solvent to use for the temperature conditions present.

H4 CHECK FOR WASHER SOLVENT TO THE WASHER JETS
  • Disconnect the washer hoses from the windshield washer jets and place them in a container to capture fluid.
  • Ignition ON.
  • Momentarily activate the windshield washer function.

Is washer fluid emitted at the washer hoses?
Yes INSTALL a new washer jet in question.
No GO to H5

H5 CHECK FOR DAMAGED WASHER HOSES AND FITTINGS
  • Inspect the washer hoses and fittings for kinks or damage.

Are the washer hoses and fittings OK?
Yes INSTALL a new washer pump.
REFER to: Windshield Washer Pump (501-16 Wipers and Washers, Removal and Installation).
No REPAIR the washer hoses or fittings as necessary.

H6 CHECK THE WIPER/WASHER SWITCH INPUT USING THE WASHER SWITCH (FRONT) (F_WASH_SW) PID (PARAMETER IDENTIFICATION)
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the SCCM PID F_WASH_SW.
  • Activate and release the wash function on the wiper/washer switch.

Does the PID indicate correctly when the switch is activated?
Yes GO to H7
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

H7 CHECK FOR VOLTAGE TO THE WASHER PUMP

NOTICE: This pinpoint test step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Washer Pump C137 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-2   Ground
  • Ignition ON.
  • Use the wiper/washer switch to activate the windshield washer function.

Does the test lamp illuminate when the washer is activated?
Yes GO to H8
No GO to H10

H8 CHECK THE WASHER PUMP GROUND CIRCUIT FOR AN OPEN

NOTICE: This pinpoint test step uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-2   C137-1
  • Ignition ON.
  • Use the wiper/washer switch to activate the windshield washer function.

Does the test lamp illuminate when the washer is activated?
Yes INSTALL a new washer pump.
REFER to: Windshield Washer Pump (501-16 Wipers and Washers, Removal and Installation).
No GO to H9

H9 CHECK THE WASHER PUMP RELAY GROUND CIRCUIT FOR AN OPEN
  • Disconnect Washer Pump Relay.
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      CWASHER PUMP RELAY-4   Ground

Is the resistance less than 3 ohms?
Yes INSTALL a new washer pump relay.
No REPAIR the circuit.

H10 CHECK THE WASHER PUMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-7   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to H11
No REPAIR the circuit.

H11 CHECK THE WASHER PUMP VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-7   C137-2

Is the resistance less than 3 ohms?
Yes GO to H12
No REPAIR the circuit.

H12 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST I: THE WINDSHIELD WASHER IS ALWAYS ON

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiper/washer switch (without police package)
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.
I1 CHECK THE WIPER/WASHER SWITCH INPUT USING THE WASHER SWITCH (FRONT) (F_WASH_SW) PID
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM PID .
  • Using a diagnostic scan tool, view the SCCM wiper/washer switch PID F_WASH_SW:

Does the PID indicate the switch is activated?
Yes INSTALL a RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM. REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).
No INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).

PINPOINT TEST J: ONE OR MORE REAR WINDOW WIPER MODES ARE INOPERATIVE

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Wiper/washer switch
  • Rear window wiper motor
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect BJB fuse 16 (10A) and make sure it is OK.
  • Inspect the wiper/washer switch for damage.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

J1 CHECK THE WINDSHIELD WIPER OPERATION
  • Ignition ON.
  • Place the wiper/washer switch to the windshield low speed position and then off.

Does the windshield wiper operate?
Yes GO to J2
No GO to Pinpoint Test A

J2 CHECK THE REAR WINDOW WIPER/WASHER SWITCH INPUT PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the following SCCM Parameter Identifications (PIDs).
    • Rear Wiper Off Switch (R_WIPE_OFF_SW)
    • Rear Wiper Delay 1 (R_WIPE_DEL1)
    • Rear Wiper Delay 2 (R_WIPE_DEL2)
  • Place the wiper/washer switch to the rear INT 1 and rear INT 2 positions, and then off.

Do the Parameter Identifications (PIDs) indicate correctly for the switch positions?
Yes VERIFY the BJB fuse 16 (10A) is OK. If OK, GO to J3
If not OK, REFER to the Wiring Diagrams manual to identify the possible cause of the circuit short.
No INSTALL a new RH steering column multifunction switch.
TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

J3 CHECK FOR VOLTAGE TO THE REAR WINDOW WIPER MOTOR
  • Ignition OFF.
  • Disconnect Rear Window Wiper Motor C4218 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4218-1   Ground

Is the voltage greater than 11 volts?
Yes GO to J5
No GO to J4

J4 CHECK THE REAR WINDOW WIPER MOTOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect Wiper Relay.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4218-1 Wiper relay, cavity 5

Is the resistance less than 3 ohms?
Yes GO to J5
No REPAIR the circuit.

J5 CHECK THE REAR WINDOW WIPER MOTOR GROUND CIRCUIT FOR AN OPEN
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4218-1   C4218-3

Is the voltage greater than 11 volts?
Yes GO to J6
No REPAIR the circuit.

J6 CHECK THE REAR WINDOW WIPER MOTOR CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect Windshield Wiper Motor C1655 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4218-2   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to J7

J7 CHECK THE REAR WINDOW WIPER MOTOR CONTROL CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4218-2   C1655-11

Is the resistance less than 3 ohms?
Yes GO to J8
No REPAIR the circuit.

J8 BYPASS THE WINDSHIELD WIPER MOTOR
  • Connect Rear Window Wiper Motor C4218 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-11   C1655-6
  • Ignition ON.

Does the rear window wiper motor operate?
Yes REMOVE the fused jumper wire. GO to J9
No REMOVE the fused jumper wire. INSTALL a new rear window wiper motor.
REFER to: Rear Window Wiper Motor (501-16 Wipers and Washers, Removal and Installation).

J9 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST K: THE REAR WINDOW WIPER STAYS ON CONTINUOUSLY

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Wiper/washer switch
  • Rear window wiper motor
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

K1 CHECK THE REAR WINDOW WIPER/WASHER SWITCH INPUT PARAMETER IDENTIFICATIONS (PIDS)
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the following SCCM Parameter Identifications (PIDs).
    • Rear Wiper Off Switch (R_WIPE_OFF_SW)
    • Rear Wiper Delay 1 (R_WIPE_DEL1)
    • Rear Wiper Delay 2 (R_WIPE_DEL2)
  • Place the wiper/washer switch to the rear INT 1 and rear INT 2 positions, and then off.

Do the Parameter Identifications (PIDs) indicate correctly for the switch positions?
Yes GO to K2
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

K2 CHECK THE WINDSHIELD WIPER MOTOR
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Ignition ON.

Does the rear window wiper motor continue to operate?
Yes GO to K3
No GO to K4

K3 CHECK THE WINDSHIELD REAR WIPER CONTROL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Rear Window Wiper Motor C4218 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C4218-2   Ground

Is the resistance greater than 10,000 ohms?
Yes INSTALL a new rear window wiper motor.
REFER to: Rear Window Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No REPAIR the circuit.

K4 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST L: THE REAR WINDOW WASHER IS INOPERATIVE

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Fuse
  • Rear washer hose
  • Rear washer jet
  • Rear washer relay
  • Wiring, terminals or connectors
  • Washer pump
  • Wiper/washer switch
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect BJB fuse 9 (15A) and make sure it is OK.
  • Inspect the wiper/washer switch for damage.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

L1 CHECK THE WINDSHIELD WASHER OPERATION
  • Ignition ON.
  • Activate the windshield washer and observe the windshield washer operation.

Does windshield washer operate correctly?
Yes GO to L2
No GO to Pinpoint Test H

L2 CHECK THE AMBIENT AIR TEMPERATURE
  • Check the ambient air temperature.

Is the ambient air temperature below freezing?
Yes GO to L3
No GO to L4

L3 CHECK THE WASHER SOLVENT
  • Check the washer solvent and make sure it is of the correct type to use for the temperature conditions present.

Is the correct type of washer solvent present?
Yes GO to L4
No ALLOW the vehicle to warm to room temperature. DRAIN and REFILL the windshield washer reservoir with the correct washer solvent type. INFORM the customer of the correct type of washer solvent to use for the temperature conditions present.

L4 CHECK FOR WASHER SOLVENT TO THE WASHER JET
  • Disconnect the washer hose from the rear window washer jet and place it in a container to capture fluid.
  • Momentarily activate the rear window washer.

Is washer fluid emitted at the washer hose?
Yes INSTALL a new washer jet.
No GO to L5

L5 CHECK FOR DAMAGED WASHER HOSES AND FITTINGS
  • Inspect the washer hoses and fittings for kinks or damage.

Are the washer hoses and fittings OK?
Yes GO to L6
No REPAIR the washer hoses or fittings as necessary.

L6 CHECK THE WIPER/WASHER SWITCH INPUT USING THE REAR WIPER WASH SWITCH (R_WIPE_WASH_SW) PID (PARAMETER IDENTIFICATION)
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the SCCM R_WIPE_WASH_SW PID .
  • Activate and release the rear window wash function on the wiper/washer switch.

Does the PID indicate correctly when the switch is activated and released?
Yes GO to L7
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

L7 CHECK THE REAR WASHER RELAY COIL CIRCUIT

NOTICE: The following Pinpoint Test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Disconnect Windshield Washer Pump C137 .
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-1   Ground
  • Ignition ON.
  • Have an assistant activate the rear window wash function

Does the test lamp illuminate when the rear window wash function is activated?
Yes GO to L8
No GO to L10

L8 CHECK THE WASHER PUMP GROUND CIRCUIT

NOTICE: The following Pinpoint Test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

  • Ignition OFF.
  • Connect:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-2
  • Ignition ON.

Does the test lamp illuminate?
Yes Install a new washer pump.
REFER to: Windshield Washer Pump (501-16 Wipers and Washers, Removal and Installation).
No GO to L9

L9 CHECK THE REAR WASHER RELAY COIL CONTROL CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Disconnect Rear washer relay.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-2   C1655-7

Is the resistance less than 3 ohms?
Yes GO to L13
No REPAIR the circuit.

L10 CHECK THE REAR WASHER RELAY
  • Ignition OFF.
  • Disconnect Rear Washer Relay.
  • Carry out the component test on the rear washer relay.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Did the rear washer relay pass the component test?
Yes GO to L11
No INSTALL a new wiper relay.

L11 CHECK THE REAR WASHER RELAY COIL CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect Windshield Wiper Motor C1655 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-12   Ground

Is any voltage present?
Yes REPAIR the circuit.
No GO to L12

L12 CHECK THE REAR WASHER RELAY COIL CONTROL CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    Rear washer relay, cavity 1   C1655-12

Is the resistance less than 3 ohms?
Yes GO to L13
No REPAIR the circuit.

L13 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST M: THE REAR WINDOW WASHER IS ALWAYS ON

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • Rear washer relay
  • Wiper/washer switch
  • Windshield wiper motor
  • SCCM

Visual Inspection and Pre-checks

  • Inspect the wiper/washer switch for damage.
M1 CHECK THE WIPER/WASHER SWITCH INPUT USING THE REAR WIPER WASH SWITCH (R_WIPE_WASH_SW) PID (PARAMETER IDENTIFICATION)
  • Ignition ON.
  • Using a diagnostic scan tool, view the SCCM Parameter Identifications (PIDs).
  • Using a diagnostic scan tool, view the SCCM R_WIPE_WASH_SW PID .
  • Activate and release the rear window wash function on the wiper/washer switch.

Does the PID indicate correctly when the switch is activated and released?
Yes GO to M2
No INSTALL a new RH steering column multifunction switch.
REFER to: Steering Column Multifunction Switch RH (211-05 Steering Wheel and Column Electrical Components, Removal and Installation). TEST the system for normal operation. If the concern is still present, INSTALL a new SCCM .
REFER to: Steering Column Control Module (SCCM) (211-05 Steering Wheel and Column Electrical Components, Removal and Installation).

M2 CHECK THE REAR WASHER RELAY COIL CONTROL CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Windshield Wiper Motor C1655 .
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-12   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to M4
No GO to M3

M3 ISOLATE THE REAR WASHER RELAY COIL CONTROL CIRCUIT SHORT TO GROUND
  • Ignition OFF.
  • Disconnect Rear washer relay.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1655-12   Ground

Is the resistance greater than 10,000 ohms?
Yes GO to M4
No REPAIR the circuit.

M4 CHECK THE REAR WASHER RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Disconnect Windshield Washer Pump C137 .
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-1   Ground

Is any voltage present?
Yes GO to M5
No GO to M6

M5 CHECK THE REAR WASHER RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE IN THE BJB
  • Ignition OFF.
  • Disconnect Rear washer relay.
  • Ignition ON.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C137-1   Ground

Is any voltage present?
Yes REPAIR the circuit.
No INSTALL a new rear washer relay.

M6 CHECK FOR CORRECT WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install new connector or terminal - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the windshield wiper motor connector. Make sure it seats and latches correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new windshield wiper motor.
REFER to: Windshield Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
TEST the system for normal operation.
No The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

PINPOINT TEST N: THE HEATED WIPER PARK FEATURE IS INOPERATIVE

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Fuse
  • Wiring, terminals or connectors
  • Heated wiper park relay
  • BJB
  • Windshield

Visual Inspection and Pre-checks

  • Inspect BJB fuse 74 (10A) and make sure it is OK.

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

NOTICE: The following Pinpoint Test uses a test lamp to simulate normal circuit loads. Use only a Rotunda Test Lamp (SGT27000) or 250-300mA incandescent bulb test lamp. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.

NOTE: The heated wiper park does not operate at ambient temperatures above 21° C (70° F). The following pinpoint test needs to be carried out when the ambient air temperature is lower than 21° C (70° F).

N1 CHECK THE REAR WINDOW DEFROST OPERATION
  • Start the vehicle.
  • Activate the rear window defrost feature.

Does the rear window defrost operate?
Yes GO to N2
No
REFER to: Glass, Frames and Mechanisms (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing).

N2 CHECK THE HEATED WIPER PARK RELAY
  • Ignition OFF.
  • Disconnect Heated Wiper Park Relay.
  • Carry out the component test on the heated wiper park relay.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Did the heated wiper park relay pass the component test?
Yes GO to N3
No INSTALL a new heated wiper park relay.

N3 CHECK FOR VOLTAGE TO THE HEATED WINDSHIELD
  • Ignition OFF.
  • Install the heated wiper park relay.
  • Disconnect Heated Windshield Element C1531 .
  • Connect:
    Click to display connectors
    Lead 1 Measurement / Action Lead 2
      C1531-1   Ground
  • Start the vehicle.
  • Activate the rear window defrost feature.

Does the test lamp illuminate when the rear window defrost feature is activated?
Yes GO to N7
No GO to N4

N4 CHECK THE HEATED WIPER PARK RELAY OUTPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Remove the heated wiper park relay
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
      C1532-1 Heated wiper park relay, cavity 5

Is the resistance less than 3 ohms?
Yes GO to N5
No VERIFY BJB Fuse 74 (10A) is OK. If OK, REPAIR the open circuit. If not OK, REFER to the Wiring Diagrams manual to identify the possible causes of the circuit short.

N5 CHECK THE HEATED WIPER PARK RELAY VOLTAGE SUPPLY CIRCUITS FOR AN OPEN
  • Start the vehicle.
  • Activate the rear window defrost feature.
  • Measure:
    Click to display connectors
    Positive Lead Measurement / Action Negative Lead
    Heated wiper park relay, cavity 3   Ground
    Heated wiper park relay, cavity 1   Ground

Are both voltages greater than 11 volts?
Yes GO to N6
No REPAIR the circuit in question.

N6 CHECK THE HEATED WIPER PARK RELAY COIL CONTROL CIRCUIT FOR AN OPEN
  • Connect:
    Lead 1 Measurement / Action Lead 2
    Heated wiper park relay, cavity 2 Battery Positive
  • Start the vehicle.
  • Activate the rear window defrost feature.

Does the test lamp illuminate when the rear window defrost is activated?
Yes The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
No REPAIR the circuit.

N7 CHECK THE WINDSHIELD HEATED WIPER PARK GROUND CIRCUIT FOR AN OPEN
  • Connect:
    Click to display connectors
    Lead 1 Measurement / Action Lead 2
      C1531-1   C1531-2
  • Start the vehicle.
  • Activate the rear window defrost feature.

Does the test lamp illuminate when the rear window defrost feature is activated?
Yes INSTALL a new windshield.
REFER to: Fixed Glass (501-11 Glass, Frames and Mechanisms, General Procedures).
No REPAIR the circuit.

PINPOINT TEST O: THE HEATED WIPER PARK FEATURE IS ALWAYS ON

Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Conditions

REFER to: Wipers and Washers - System Operation and Component Description (501-16 Wipers and Washers, Description and Operation).

Possible Sources

  • Wiring, terminals or connectors
  • BJB

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

O1 CHECK THE REAR WINDOW DEFROST OPERATION
  • Start the vehicle.

Is the rear window defrost active?
Yes
REFER to: Glass, Frames and Mechanisms (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing).
No GO to O2

O2 CHECK THE HEATED WIPER PARK RELAY OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect Heated Windshield Element C1531 .
  • Remove the heated wiper park relay
  • Connect:
    Click to display connectors
    Lead 1 Measurement / Action Lead 2
      C1531-1   C1531-2
  • Start the vehicle.

Does the test light illuminate?
Yes REPAIR the circuit.
No INSTALL a new heated wiper park relay.

PINPOINT TEST P: WIPER BLADE PERFORMANCE CONCERNS - POOR CLEANING, STREAKING, OR CHATTER

Normal Operation and Fault Conditions

Wiper blade cleaning, streaking, or chatter concerns are commonly caused by dirt, ice, debris, or other foreign material on the wiper blade(s) or glass surface. The wiper blades and glass surface should be cleaned and retested prior to replacing wiper blades for a cleaning, streaking, or chatter concern.

Possible Sources

  • Dirt, ice, debris, or other foreign material on wiper blade(s)
  • Dirt, ice, debris, or other foreign material on glass surface
  • Damage to wiper blade(s)
  • Damage to glass

Visual Inspection and Pre-checks

  • Inspect the glass surface for damage
P1 CLEAN THE WIPER BLADES AND GLASS SURFACE
  • Ignition OFF.
  • Clean the suspect wiper blade(s):
    • Wipe the suspect wiper blade(s) with a clean, lint-free cloth and windshield washer fluid (Motorcraft ZC-32M20-EG or equivalent)
  • Clean the glass surface:
    • Wipe the suspect glass surface with a clean, lint-free cloth and glass cleaner (Motorcraft ZC-23 or equivalent)
  • Ignition ON.
  • Retest the wiper system.

Is the wiper performance concern still present (poor cleaning, streaking, chatter)?
Yes INSTALL new wiper blade(s) for the blade(s) in question.
No The system is operating correctly. The concern was caused by dirt, ice, debris, or other foreign material on the wiper blade(s) or glass surface


    Description and Operation - Wipers and Washers - System Operation and Component Description

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    Remove the timing chain.
    Refer to: Timing Chain (303-01C Engine - 2.0L Duratec-HE (129kW/175PS), Removal and Installation).
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