Ford Ecosport: Tire Pressure Monitoring System (TPMS) / Diagnosis and Testing - Tire Pressure Monitoring System (TPMS)

• Fuse
• Wiring, terminals or connectors
• Communication network concern
• BCM

• Refer to the Pinpoint Test

• Refer to the Pinpoint Test

• Communication network concern
• IPC

• Refer to the Pinpoint Test

NOTE: Make sure all aftermarket electronic equipment has been disconnected (if possible) and the customer has been questioned about the electronic equipment they may have been using in the vehicle when this concern was identified.

Normal Operation and Fault Conditions

REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).

The TPMS communication can be interrupted by RFI , which can cause intermittent issues that are not vehicle concerns. RFI is generated by electrical motors and appliance operation, cellular telephones, remote transmitters, power inverters and portable entertainment equipment.

DTC Fault Trigger Conditions

Possible Sources

• TPMS sensors not installed
• RTM communication concern
• TPMS sensors not trained
• TPMS sensor
• BCM

Visual Inspection and Pre-checks

• Inspect for cell phone chargers or GPS units.
• Inspect for non-Original Equipment Manufacturer (OEM) wheels or run-flat tires.
• Verify horn operation.
• Verify spare tire is not in use.

• Ignition ON.

• Using a diagnostic scan tool, carry out the Network Test.

• Train all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

NOTE: Make sure that all aftermarket electronic equipment has been disconnected (if possible) and the customer has been questioned about the types of electronic equipment they may have been using in the vehicle when this issue was identified.

• NOTE: A spare tire cannot be programmed to the vehicle, even if equipped with a TPMS sensor. If a damaged road wheel is located in the luggage compartment and the BCM cannot communicate with it, or if the damaged wheel has been dropped off at a dealership or repair shop, the BCM sets a TPMS sensor fault. If the spare tire is in use, repair and remount the road wheel as necessary to restore system operation.
  REFER to: Tire Pressure Monitoring System (TPMS) - Component Location (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).
  

• Move the vehicle to rotate the wheels at least one-fourth of a turn. Leave the vehicle doors open. Start the sensor training procedure at a different wheel.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Ignition OFF.

• Disconnect and inspect all BCM connectors.

• Repair:
  • corrosion (replace connector or terminals - clean module pins)
  • damaged or bent pins - replace terminals/pins
  • pushed-out pins - replace 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.

Normal Operation and Fault Conditions

The TPMS sensor radio transmissions are sent to the BCM approximately once every 60 seconds while the vehicle speed exceeds 32 km/h (20 mph).

The TPMS sensor communication to the BCM can be interrupted by RFI , which can cause intermittent issues that are not vehicle concerns. RFI is generated by items such as; electrical motors and appliance operation, cellular telephones, remote transmitters, power inverters and portable entertainment equipment. When the TPMS sensor training procedure is performed successfully, the warning indicator is extinguished and the vehicle must be driven for 18-20 minutes before the BCM sets a fault.

DTC Fault Trigger Conditions

Possible Sources

• TPMS sensors not installed
• TPMS sensor not trained
• TPMS sensor
• BCM

Visual Inspection and Pre-checks

• Inspect for customer electronic devices, such as cell phone chargers or GPS units.
• Inspect for Non-Original Equipment Manufacturer (OEM) wheels or run-flat tires.
• Verify horn operation.
• Verify spare tire is not in use.

• Ignition ON.

• Using a diagnostic scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).

• Activate all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Activation (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Using a diagnostic scan tool, carry out the BCM self-test.

• Ignition ON.

• Using a diagnostic scan tool, view and record the following BCM Parameter Identifications (PIDs):
  • Left Front Tire Transmitter Identifier (TPM_S_ID_LF)
  • Right Front Tire Transmitter Identifier (TPM_S_ID_RF)
  • Left Rear Tire Transmitter Identifier (TPM_S_ID_LRO)
  • Right Rear Tire Transmitter Identifier (TPM_S_ID_RRO)

• Train all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Starting at a different wheel, train all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Ignition OFF.

• Disconnect and inspect all BCM connectors.

• Repair:
  • corrosion (replace connector or terminals - clean module pins)
  • damaged or bent pins - replace terminals/pins
  • pushed-out pins - replace 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.

Normal Operation and Fault Conditions

When the TPMS sensor is activated by the sensor training tool, the sensor transmits the current tire pressure and sensor identification to the BCM . RFI or a sensor with an internal failure prevents the sensor from transmitting the information to the BCM . Likewise, a BCM with an internal failure prevents the sensor information from reaching the BCM .

Possible Sources

• RFI
• TPMS sensor
• BCM

Visual Inspection and Pre-checks

• Inspect for customer electronic devices, such as a cell phone charger or GPS unit.
• Inspect for aftermarket wheels or run-flat tires (tires with steel body cord plies in the tire sidewall).

• Ignition ON.

• Using a diagnostic scan tool, view the BCM TPMS_STAT PID .

NOTE: Before beginning TPMS sensor training, make sure the vehicle is away from other vehicles or devices that might cause RFI such as electric motors or radio transmitters.

• Train all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Move the vehicle to rotate the wheels at least one-fourth of a turn. Leave the vehicle doors open.

• Attempt to train known good TPMS sensors from another vehicle to the concern vehicle.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Ignition OFF.

• Disconnect and inspect all 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.

• Operate the system and determine if the concern is still present.

Normal Operation and Fault Conditions

The BCM monitors the tire pressure of all 4 road tires. The wheel-mounted tire pressure sensors transmit data via radio frequency signals to the BCM where a predetermined pass/fail criteria is applied. The TPMS sensor radio transmissions are sent approximately once every 60 seconds while the vehicle speed exceeds 32 km/h (20 mph). The BCM compares each TPMS sensor transmission against a low-pressure limit. If it has been determined that the tire pressure has fallen below this limit, the BCM communicates this on the MS-CAN to the IPC . The IPC then illuminates the TPMS warning indicator and displays the appropriate message in the message center.

For vehicles with different front and rear tire pressures, the tire pressures must be adjusted and the TPMS sensors must be trained following a tire rotation. REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
Failure to train the sensors results in a false low tire pressure event which causes the TPMS warning indicator to illuminate.

For vehicles with the same front and rear tire pressures, tire rotation does not affect the TPMS .

Possible Sources

• Tire pressure not set to specifications listed on the VC label
• Spare tire currently in use
• TPMS sensor

Visual Inspection and Pre-checks

• Inspect for the spare tire in use.
• Inspect for low tire pressure.

• NOTE: The spare tire is not programmable even if it is equipped with a TPMS sensor. If a damaged road wheel is located in the trunk, the sensor may still be recognized by the TPMS as low. Make sure the spare tire is not currently in use. Check the spare tire location.

• Measure and record the pressure in all 4 tires using special tool 204-354.

• Adjust the pressure for those found to be below the specification listed on the VC label.

• To clear the low pressure warning indicator, activate each sensor at least twice.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Activation (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  Or drive the vehicle for at least 2 minutes above 32.2 km/h (20 mph). Do not train the sensors at this time.

• Train all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Using a diagnostic scan tool, view the following BCM Parameter Identifications (PIDs):
  • Left Front Tire Pressure (TPM_PRES_LF)
  • Right Front Tire Pressure (TPM_PRES_RF)
  • Left Rear Tire Pressure (TPM_PRES_LRO)
  • Right Rear Tire Pressure (TPM_PRES_RRO)

Normal Operation and Fault Conditions

For the BCM to enter TPMS sensor training mode, the BCM must receive valid inputs from the stoplamp switch (off) and ignition (ON), and it must receive valid vehicle speed sensor input (0 km/h [0 mph]).

If the vehicle has been stationary for more than 15 minutes, the TPMS sensors go into a sleep mode to conserve battery power. It becomes necessary to wake them up so they transmit the latest tire pressure information to the BCM . REFER to: Tire Pressure Monitoring System (TPMS) Sensor Activation (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).

Possible Sources

• Stoplamp switch concern
• Ignition switch concern
• VSS concern
• BCM

Visual Inspection and Pre-checks

• Inspect for customer electronic devices, such as a cell phone charger or GPS unit.
• Inspect for non-Original Equipment Manufacturer (OEM) wheel or run-flat tires.

• Ignition ON.

• Using a diagnostic scan tool, monitor the BCM Ignition Switch State (IGN_SW_STATE) PID with the ignition in RUN.

• Using a diagnostic scan tool, carry out the PCM KOEO self-test.

• Press and release the brake pedal while monitoring the stoplamps.

• Ignition OFF.

• Disconnect and inspect all 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.

• Operate the system and determine if the concern is still present.

Normal Operation and Fault Conditions

The BCM monitors the tire pressure of all 4 road tires. The wheel-mounted tire pressure sensors transmit signals via radio frequency to the BCM . The BCM is a radio receiver that collects the tire pressure data from the tire pressure sensors. The TPMS sensor radio transmissions are sent once approximately every 60 seconds when the vehicle speed exceeds 32 km/h (20 mph). Through the training process, the BCM learns the position of each TPMS sensor.

If the vehicle has been stationary for more than 15 minutes, the TPMS sensors go into a sleep mode to conserve battery power. It becomes necessary to wake them up so they transmit the latest tire pressure information to the BCM . REFER to: Tire Pressure Monitoring System (TPMS) Sensor Activation (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).

Possible Sources

• RFI
• TPMS sensors

Visual Inspection and Pre-checks

• Inspect for customer electronic devices, such as a cell phone charger or GPS unit.
• Inspect for non-Original Equipment Manufacturer (OEM) wheel or run-flat tires.

NOTE: The BCM has a 2-minute time limit between sensor responses. If the BCM does not recognize any of the 4 TPMS sensors during this time limit, the horn sounds twice and the message center displays TIRE NOT TRAINED REPEAT. The entire procedure must be repeated.

• TRAIN all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

• Move the vehicle to rotate the wheels at least one-fourth turn.

• TRAIN all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  

DTC Fault Trigger Conditions

Possible Sources

• TPMS sensor locations not trained
• BCM configuration

• Check vehicle history for recent service action with the BCM .

• Train all 4 TPMS sensors.
  REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).
  .

• Using a diagnostic scan tool, clear the BCM Diagnostic Trouble Codes (DTCs).

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, carry out the BCM self-test.

• Using a diagnostic scan tool, install as-built data for the BCM .
  REFER to: Module Programming (418-01 Module Configuration, General Procedures).
  

• Ignition OFF.

• Ignition ON.

• Using a diagnostic scan tool, carry out the BCM self-test.