Ford Fiesta Manuals

Ford Fiesta: Tire Pressure Monitoring System (TPMS) / Tire Pressure Monitoring System (TPMS). Diagnosis and Testing

Ford Fiesta 2014 - 2019 Service Manual / Suspension / Tire Pressure Monitoring System (TPMS) / Tire Pressure Monitoring System (TPMS). Diagnosis and Testing

DTC Charts

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).


  BCM DTC Chart


  DTC Description Action
B1182:00 Tire Pressure Monitoring System: No Sub Type Information   GO to Pinpoint Test A
B1182:55 Tire Pressure Monitoring System: Not Configured   GO to Pinpoint Test G
B124D:02 Tire Pressure Sensor: General Signal Failure   GO to Pinpoint Test B
B1254:51 Right Rear (Outside on Dual Wheel) Tire Pressure Sensor and Transmitter Assembly: Not Programmed   GO to Pinpoint Test G
B1255:51 Left Rear (Outside On Dual Wheel) Tire Pressure Sensor and Transmitter Assembly: Not Programmed   GO to Pinpoint Test G
C1A56:51 Left Front Tire Pressure Sensor and Transmitter Assembly: Not Programmed   GO to Pinpoint Test G
C1A58:51 Right Front Tire Pressure Sensor and Transmitter Assembly: Not Programmed   GO to Pinpoint Test G
— All Other BCM Diagnostic Trouble Codes (DTCs)  
REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

Symptom Charts

Symptom Chart: Tire Pressure Monitoring System

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 Possible Sources Actions
A module does not respond to the diagnostic scan tool
  • Fuse
  • Wiring, terminals or connectors
  • Communication network concern
  • BCM
 
REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).
The TPMS warning indicator is on continuously and the message center displays LOW TIRE PRESSURE
  • Refer to the Pinpoint Test
  GO to Pinpoint Test D
The BCM will not enter TPMS sensor training mode
  • Refer to the Pinpoint Test
  GO to Pinpoint Test E
The TPMS warning indicator is never or always on
  • Communication network concern
  • IPC
 
REFER to: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
One or more TPMS sensors do not train and no Diagnostic Trouble Codes (DTCs) are present
  • Refer to the Pinpoint Test
  GO to Pinpoint Test F

Pinpoint Tests


PINPOINT TEST A: B1182:00

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

DTC Description Fault Trigger Condition
BCM B1182:00 Tire Pressure Monitoring System: No Sub Type Information Set by the BCM in continuous memory when all 4 of the tire pressure sensors are faulted, not responding or when data is not received by the BCM .

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.
A1 CHECK THE COMMUNICATION NETWORK
  • Ignition ON.
  • Using a diagnostic scan tool, carry out the Network Test.

Does the BCM pass the Network Test?
Yes GO to A2
No DIAGNOSE the no communication with the BCM . REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

A2 TRAIN THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS
  • Train all 4 TPMS sensors.
    REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).

Did all of the TPMS sensors transmit correctly and did the horn sound when each sensor transmitted to the BCM ?
Yes The system is operating correctly at this time. The concern may have been caused by RFI .
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).
No GO to A3

A3 REPEAT THE TPMS (TIRE PRESSURE MONITORING SYSTEM) TRAINING

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) - System Operation and Component Description (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).

Did any of the TPMS sensors train and did the horn sound when each sensor transmitted to the BCM ?
Yes INSTALL a new TPMS sensor for each sensor that failed to train.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation).
No GO to A4

A4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • 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.

Is the concern still present?
Yes The sensors may not be present. DISMOUNT all 4 tires and VERIFY the sensors are present and mounted to the wheels.
REFER to: Wheel and Tire (204-04A Wheels and Tires, Disassembly and Assembly). If a sensor is missing, INSTALL a new sensor.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation). If all the sensors are present, CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB , GSB , SSM , or FSA . If a service article exists for the concern, DISCONTINUE this test and FOLLOW the service article 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 RFI .
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).

PINPOINT TEST B: B124D:02

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

DTC Description Fault Trigger Condition
BCM B124D:02 Tire Pressure Sensor: General Signal Failure At speeds greater than 32 km/h (20 mph) with no other TPMS Diagnostic Trouble Codes (DTCs) present, the BCM tests for TPMS sensor transmissions. If after 18 minutes the BCM has not received a transmission from 1, 2 or 3 of the TPMS sensors, a DTC is set in the BCM , the TPMS warning indicator flashes for 75 seconds and then remains illuminated.

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.
B1 ACTIVATE THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS AND CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • 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.

Is DTC B1182:00 present?
Yes GO to Pinpoint Test A
No If DTC B124D:02 is present, GO to B2
For all other BCM Diagnostic Trouble Codes (DTCs), GO to the DTC Chart: Body Control Module (BCM).
If there are no Diagnostic Trouble Codes (DTCs) present, the system is operating correctly at this time. The concern may have been caused by RFI .
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).

B2 CARRY OUT THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSOR TRAINING PROCEDURE
  • 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).

Did all of the TPMS sensors train successfully and did the horn sound when each TPMS sensor transmitted to the BCM ?
Yes Using the diagnostic scan tool, LOCATE the updated TPMS sensor identifiers trained to the BCM .
COMPARE these values to those recorded prior to the TPMS sensor training procedure. Disregarding sensor position, any sensor identifiers that do not match those retrieved from the module were changed, but not retrained. The sensors are now trained to the vehicle, diagnosis is complete.
DOCUMENT all TPMS sensor identifiers on the applicable warranty claim.
No GO to B3

B3 ATTEMPT TO TRAIN THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS AGAIN
  • 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).

Did any of the TPMS sensors train successfully and did the horn sound when each TPMS sensor transmitted to the BCM ?
Yes REPLACE any TPMS sensor that did not train.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation).
No GO to B4

B4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • 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.

Is the concern still present?
Yes The sensors may not be present. DISMOUNT the tires and VERIFY the sensors are present and mounted to the wheels.
REFER to: Wheel and Tire (204-04A Wheels and Tires, Disassembly and Assembly). If a sensor is missing, INSTALL a new sensor.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation). If all the sensors are present, CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB , GSB , SSM , or FSA . If a service article exists for the concern, DISCONTINUE this test and FOLLOW the service article 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. CLEAR the DTC .

PINPOINT TEST C: DIAGNOSING RADIO FREQUENCY INTERFERENCE FAULTS

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).
C1 VIEW THE BCM (BODY CONTROL MODULE) TIRE PRESSURE MONITORING SYSTEM STATUS (TPMS_STAT) PID (PARAMETER IDENTIFICATION)
  • Ignition ON.
  • Using a diagnostic scan tool, view the BCM TPMS_STAT PID .

Does the BCM TPMS_STAT PID display SYSTEM FAULT?
Yes GO to C2
No GO to C4

C2 CARRY OUT THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSOR TRAINING PROCEDURE

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).

Did all of the TPMS sensors transmit correctly and did the horn sound when each sensor transmitted to the BCM ?
Yes The system is operating correctly at this time. The concern may have been caused by RFI .
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).
No GO to C3

C3 ATTEMPT TO CARRY OUT THE SENSOR TRAINING PROCEDURE AGAIN USING KNOWN GOOD SENSORS
  • 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).

Did the known good TPMS sensors transmit correctly and did the horn sound when the known good TPMS sensors transmitted to the BCM ?
Yes If some of the sensors trained, INSTALL a new TPMS sensor for each sensor that failed to train.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation). If all the known good sensors trained, INSTALL new TPMS sensors.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation).
No GO to C4

C4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • 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.

Is the concern still present?
Yes If all the sensors are present, CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB , GSB , SSM , or FSA . If a service article exists for the concern, DISCONTINUE this test and FOLLOW the service article 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 D: THE TPMS (TIRE PRESSURE MONITORING SYSTEM) WARNING INDICATOR IS ON CONTINUOUSLY AND THE MESSAGE CENTER DISPLAYS LOW TIRE PRESSURE

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.
D1 CHECK FOR SPARE TIRE IN USE
  • 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.

Is the spare tire in use?
Yes REPAIR and REMOUNT the damaged wheel to the vehicle.
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation). ADJUST tire pressures to the required pressure as defined on the VC label.
No GO to D2

D2 CHECK FOR LOW TIRE PRESSURE
  • 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.

Has the TPMS warning indicator gone out?
Yes The system is operating correctly at this time. The cause was low tire pressure.
No GO to D3

D3 TRAIN ALL 4 TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS
  • Train all 4 TPMS sensors.
    REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration (204-04B Tire Pressure Monitoring System (TPMS), General Procedures).

Do all of the TPMS sensors train?
Yes GO to D4
No GO to Pinpoint Test F

D4 CHECK THE TIRE PRESSURES USING THE BCM (BODY CONTROL MODULE) TIRE PRESSURE PARAMETER IDENTIFICATIONS (PIDS)
  • 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)

Do the Left Front (LF), Right Front (RF) and Left Rear (LR) tire pressures indicated by the Parameter Identifications (PIDs) match the tire pressures shown by special tool 204-354, ±20.7 kPa (3 psi)?
Yes INSTALL a new Right Rear (RR) TPMS sensor.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation).
No INSTALL a new TPMS sensor for the sensor displaying inaccurate tire pressure.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation).

PINPOINT TEST E: THE BCM (BODY CONTROL MODULE) WILL NOT ENTER TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSOR TRAINING MODE

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.
E1 CHECK THE BCM (BODY CONTROL MODULE) IGNITION INPUT
  • Ignition ON.
  • Using a diagnostic scan tool, monitor the BCM Ignition Switch State (IGN_SW_STATE) PID with the ignition in RUN.

Does the PID indicate the correct ignition state?
Yes GO to E2
No DIAGNOSE the ignition switch or start/stop button.
REFER to: Steering Wheel and Column Electrical Components (211-05 Steering Wheel and Column Electrical Components, Diagnosis and Testing).

E2 CHECK FOR VEHICLE SPEED-RELATED DIAGNOSTIC TROUBLE CODES (DTCS) IN THE PCM (POWERTRAIN CONTROL MODULE)
  • Using a diagnostic scan tool, carry out the PCM KOEO self-test.

Are there any vehicle speed-related Diagnostic Trouble Codes (DTCs) present in the PCM ?
Yes DIAGNOSE the PCM DTC .
REFER to: Electronic Engine Controls (303-14B Electronic Engine Controls - 1.6L EcoBoost (132kW/180PS) – Sigma, Diagnosis and Testing).
REFER to: Electronic Engine Controls (303-14B Electronic Engine Controls - 1.6L EcoBoost (132kW/180PS) – Sigma, Diagnosis and Testing).
No GO to E3

E3 CHECK THE STOPLAMP OPERATION
  • Press and release the brake pedal while monitoring the stoplamps.

Do the stoplamps operate correctly?
Yes GO to E4
No DIAGNOSE the stoplamp switch and stoplamps.
REFER to: Stoplamps (417-01 Exterior Lighting, Diagnosis and Testing).

E4 CHECK FOR CORRECT BCM (BODY CONTROL MODULE) OPERATION
  • 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.

Is the concern still present?
Yes If all the sensors are present, CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB , GSB , SSM , or FSA . If a service article exists for the concern, DISCONTINUE this test and FOLLOW the service article 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 F: ONE OR MORE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS DO NOT TRAIN AND NO DIAGNOSTIC TROUBLE CODES (DTCS) ARE 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.
F1 ATTEMPT TO TRAIN THE TPMS (TIRE PRESSURE MONITORING SYSTEM) SENSORS

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).

Do all of the TPMS sensors train?
Yes The system is operating correctly at this time. The concern may have been caused by RFI .
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).
No If one or more TPMS sensors trained, GO to F2
If none of the TPMS sensors trained, GO to Pinpoint Test C

F2 CHECK FOR RADIO FREQUENCY INTERFERENCE (RFI)
  • 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).

Did all 4 of the TPMS sensor train?
Yes The system is operating correctly at this time. The concern may have been caused by RFI .
REFER to: Tire Pressure Monitoring System (TPMS) - System Operation and Component Description (204-04B Tire Pressure Monitoring System (TPMS), Description and Operation).
No INSTALL a new TPMS sensor for each sensor that did not train.
REFER to: Tire Pressure Monitoring System (TPMS) Sensor (204-04B Tire Pressure Monitoring System (TPMS), Removal and Installation).

PINPOINT TEST G: B1182:55, B1254:51, B1255:51, C1A56:51 OR C1A58:51

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
BCM B1182:55 Tire Pressure Monitoring System: Not Configured This DTC is only present when a new BCM is installed, or the BCM is flashed or reconfigured. This DTC is cleared after the TPMS sensors locations are trained to the BCM .
BCM B1255:51 Left Rear (Outside On Duel Wheel) Tire Pressure Sensor and Transmitter Assembly: Not Programmed This DTC is only present when a new BCM is installed, or the BCM is flashed or reconfigured. This DTC is cleared after the TPMS sensors locations are trained to the BCM .
BCM B1254:51 Right Rear (Outside on Duel Wheel) Tire Pressure Sensor and Transmitter Assembly: Not Programmed This DTC is only present when a new BCM is installed, or the BCM is flashed or reconfigured. This DTC is cleared after the TPMS sensors locations are trained to the BCM .
BCM C1A56:51 Left Front Tire Pressure Sensor and Transmitter Assembly: Not Programmed This DTC is only present when a new BCM is installed, or the BCM is flashed or reconfigured. This DTC is cleared after the TPMS sensors locations are trained to the BCM .
BCM C1A58:51 Right Front Tire Pressure Sensor and Transmitter Assembly: Not Programmed This DTC is only present when a new BCM is installed, or the BCM is flashed or reconfigured. This DTC is cleared after the TPMS sensors locations are trained to the BCM .

Possible Sources

  • TPMS sensor locations not trained
  • BCM configuration
G1 CHECK VEHICLE HISTORY
  • Check vehicle history for recent service action with the BCM .

Were there any recent BCM service actions?
Yes GO to G2
No GO to G3

G2 CARRY OUT THE TPMS SENSOR TRAINING PROCEDURE
  • 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.

Are there any BCM Diagnostic Trouble Codes (DTCs) present?
Yes GO to G3
No The system is operating correctly at this time. Un-trained TPMS sensors caused the DTC .

G3 PROGRAM THE BCM
  • 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.

Are there any BCM Diagnostic Trouble Codes (DTCs) present?
Yes CHECK OASIS for any applicable Technical Service Bulletins (TSBs), GSB , SSM or FSA . If a exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions.
If no service articles address this concern, INSTALL a new BCM refer to section 419-10.
No The system is operating correctly at this time. The concern was caused by an incorrectly configured BCM .


    Tire Pressure Monitoring System (TPMS) - System Operation and Component Description. Description and Operation

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    Other information:

    Ford Fiesta 2014 - 2019 Service Manual: Pinpoint Test - DTC: N. Diagnosis and Testing


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    Parking Brake Control. Removal and Installation

    Removal

    NOTE: Removal steps in this procedure may contain installation details.

    Remove the floor console.
    Refer to: Floor Console (501-12 Instrument Panel and Console, Removal and Installation).
    Remove the driver seat.
    Refer to: Front Seat (501-10 Seating, Removal and Installation).
    Remove the parking brake cable adjustment lock nut.
    Loosen the parking brake cable adjustment nut.

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