Pinpoint Test E: Body Control Module (BCM) Does Not Enter Sensor Training Mode When Using the Tire Pressure Monitoring System (

Tire Pressure Monitoring System

Pinpoint Tests

Pinpoint Test E: Body Control Module (BCM) Does Not Enter Sensor Training Mode When Using the Tire Pressure Monitoring System (TPMS) Sensor Training Procedure

Normal Operation

For the Body Control Module (BCM) to enter Tire Pressure Monitoring System (TPMS) sensor training mode, the BCM must receive valid inputs from the stoplamp switch (OFF) and ignition switch (RUN), and it must receive valid vehicle speed sensor input (0 km/h [0 mph]). Refer to Tire Pressure Monitoring System (TPMS) Sensor Training Tire Pressure Monitoring System (TPMS) Sensor Training for the complete sensor training procedure.

This pinpoint test is intended to diagnose the following:
- Stoplamp switch concern
- Ignition switch concern
- BCM

PINPOINT TEST E: BCM DOES NOT ENTER SENSOR TRAINING MODE WHEN USING THE TPM SENSOR TRAINING PROCEDURE

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E1 CHECK THE IGNITION SWITCH INPUT

- Ignition ON.
- Enter the following diagnostic mode on the scan tool: BCM DataLogger.
- Monitor the BCM ignition switch PID (IGN_SW_STATE) with the ignition in the RUN position.
- Does the PID indicate the correct ignition switch position?

Yes
GO to E2.

No
REFER to Steering Column Switches Testing and Inspection to continue diagnosis of the ignition switch.

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E2 CHECK FOR VEHICLE SPEED-RELATED DTCs IN THE BCM

- Carry out the BCM self-test.
- Are any vehicle speed-related DTCs present?

Yes
REFER to the BCM DTC Chart in Multifunction Electronic Modules Testing and Inspection.

No
GO to E3.

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E3 CHECK THE STOPLAMP OPERATION

- Ignition ON.
- Press and release the brake pedal while monitoring the stoplamps.
- Do the stoplamps operate properly?

Yes
GO to E4.

No
REFER to Exterior Lighting Testing and Inspection to continue diagnosis of the stoplamp switch.

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E4 CHECK FOR CORRECT BCM OPERATION

- Disconnect all the BCM connectors.
- Check the connectors for:

- corrosion.
- pushed-out pins.
- spread terminals.
- Connect all the BCM connectors and make sure that they are seated correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?

Yes
INSTALL a new BCM. REFER to Multifunction Electronic Modules Service and Repair. 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.

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