Pinpoint Test K: DTCs B2872, B287A
Tire Pressure Monitoring System (TPMS)
Pinpoint Test K: DTCs B2872, B287A
NOTE: If the vehicle has been stationary for more then 30 minutes, the sensors go into sleep mode to conserve battery power. It becomes necessary to wake them up to transmit the latest tire pressure information to the Tire Pressure Monitoring System (TPMS). Refer to Tire Pressure Monitoring System (TPMS) Sensor Activation Tire Pressure Monitoring System (TPMS) Sensor Activation.
Normal Operation
The TPMS (Tire Pressure Monitoring System) normally receives a response from all 4 sensors, if the Tire Pressure Monitor (TPM) /Vehicle Security Module (VSM) does not receive a response from one or more sensors, the TPMS (Tire Pressure Monitoring System) system sets DTCs B2872 and B287A. When no response is received from all four sensors, the TPMS (Tire Pressure Monitoring System) indicator flashes for 70 seconds from key ON and then remains ON continuously.
- DTC B2872 (Tire Pressure Sensor Fault)- sets if the Tire Pressure Monitor (TPM) /Vehicle Security Module (VSM) has been unable to communicate with 1 or more sensors (up to 3) for more than 20 minutes.
- DTC B287A (Tire Pressure System Fault)- sets if the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) has been unable to communicate with all 4 sensors for more than 20 minutes.
- TP_STAT = SYSTEM FAULT is displayed if the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) does not receive a signal transmission from all 4 TPMS (Tire Pressure Monitoring System) sensors for 20 minutes and the vehicle speed is above 32 km/h (20 mph).
This pinpoint test is intended to diagnose the following:
- TPMS (Tire Pressure Monitoring System) sensors not trained to the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)
- TPMS (Tire Pressure Monitoring System) sensors missing
- Incorrect TPMS (Tire Pressure Monitoring System) sensor installed
- TPMS (Tire Pressure Monitoring System)
- Radio Frequency Interference (RFI)
PINPOINT TEST K : DTCs B2872, B287A
NOTE: If the vehicle has been stationary for more than 30 minutes, the sensors go into sleep mode" to conserve battery power. It is necessary to wake them up to transmit the latest tire pressure information to the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module). Refer to Tire Pressure Monitoring System (TPMS) Sensor Activation Tire Pressure Monitoring System (TPMS) Sensor Activation.
K1 CHECK TPMS (Tire Pressure Monitoring System) SENSOR IDENTIFIERS (IDs) AND CARRY OUT TPMS (Tire Pressure Monitoring System) SENSOR TRAINING PROCEDURE
NOTE: Make sure that all aftermarket electronic equipment has been disconnected (if possible) and that the customer has been questioned about the kinds of electronic equipment they may have been using in the vehicle when this issue was identified.
- Connect the scan tool.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: VSM (Vehicle Security Module) DataLogger.
- Read and record the following PIDs:
- Left Front Tire Transmitter Identifier (LF_ID)
- Right Front Tire Transmitter Identifier (RF_ID)
- Left Rear Tire Transmitter Identifier (LR_ID)
- Right Rear Tire Transmitter Identifier (RR_ID)
- Train the TPMS (Tire Pressure Monitoring System) sensors. Refer to Tire Pressure Monitoring System (TPMS) Sensor Training Tire Pressure Monitoring System (TPMS) Sensor Training.
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: VSM (Vehicle Security Module) DataLogger.
- Read and record the following PIDs:
- Left Front Tire Transmitter Identifier (LF_ID)
- Right Front Tire Transmitter Identifier (RF_ID)
- Left Rear Tire Transmitter Identifier (LR_ID)
- Right Rear Tire Transmitter Identifier (RR_ID)
Did all the sensors train?
Yes
GO to K2.
No
GO to K3.
K2 COMPARE THE SENSOR IDENTIFIERS BEFORE AND AFTER SENSOR TRAINING
- Read and record the following PIDs:
- Left Front Tire Transmitter Identifier (LF_ID)
- Right Front Tire Transmitter Identifier (RF_ID)
- Left Rear Tire Transmitter Identifier (LR_ID)
- Right Rear Tire Transmitter Identifier (RR_ID)
- Compare the recorded PID readings taken before sensor training with the readings taken after sensor training.
Did all the sensors match?
Yes
If all the sensors trained, REFER to Tire Pressure Monitoring System (TPMS) principles of operation for additional Information on training sensors Principles Of Operation.
No
Any sensor identifiers that do not match were mounted to the vehicle without the required sensor training. REFER to Tire Pressure Monitoring System (TPMS) Sensor Training Tire Pressure Monitoring System (TPMS) Sensor Training.
K3 SENSOR(S) NOT RESPONDING TO TRAINING
- NOTE: Sensor(s) that won't train may be broken, missing, or the wrong sensor(s) may be installed.
Dismount tire and inspect the suspect TPMS (Tire Pressure Monitoring System) sensor(s).
- Install a new sensor(s) as necessary. Refer to Tire Pressure Monitoring System (TPMS) Sensor Service and Repair.
- Retrain the TPMS (Tire Pressure Monitoring System) sensors. Refer to Tire Pressure Monitoring System (TPMS) Sensor Training Tire Pressure Monitoring System (TPMS) Sensor Training.
Did all the TPMS (Tire Pressure Monitoring System) sensors transmit to the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)?
Yes
The system is functioning normally.
No
GO to K4.
K4 CHECK TPMS (Tire Pressure Monitoring System) SYSTEM OPERATION
- Disconnect all the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) electrical connectors.
- Check the connectors for:
- corrosion.
- pushed-out pins.
- spread terminals.
- Connect all the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) connectors and make sure that they are seated correctly.
- Attempt to train the TPMS (Tire Pressure Monitoring System) sensors again. Refer to Tire Pressure Monitoring System (TPMS) Sensor Training Tire Pressure Monitoring System (TPMS) Sensor Training.
Is the concern still present?
Yes
GO to K5.
No
The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the self-test.
K5 CHECK TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)
NOTE: Make sure that all aftermarket electronic equipment has been disconnected (if possible) and that the customer has been questioned about the kinds of electronic equipment they may have been using in the vehicle when this issue was identified. A faulty TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) and a module affected by can behave in the same way. Care must be taken to make sure the root cause of the issue is clearly identified.
- Attempt to train the TPMS (Tire Pressure Monitoring System) sensors with all aftermarket electronic equipment disconnected. Refer to Tire Pressure Monitoring System (TPMS) Sensor Training Tire Pressure Monitoring System (TPMS) Sensor Training.
Did all the TPMS (Tire Pressure Monitoring System) sensors transmit to the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module)?
Yes
If the concern and/or DTCs return after the road test, the customer needs to be informed that their aftermarket equipment is causing unwanted RFI (Radio Frequency Interference) with the TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module) and the system is functioning as designed under Federal Communications guidelines.
No
INSTALL a new TPM (Tire Pressure Monitor) /VSM (Vehicle Security Module). REFER to Tire Pressure Monitor (TPM) Module - 4-Door Sedan Tire Pressure Monitoring System (TPMS) Module - 4-Door Sedan or Tire Pressure Monitor (TPM) Module - 5-Door Hatchback Tire Pressure Monitoring System (TPMS) Module - 5-Door Hatchback.
TEST the system for normal operation.