Pinpoint Test E: The Driver Door Module (DDM) Will Not Enter Training Mode
Tire Pressure Monitoring System
Pinpoint Tests
Pinpoint Test E: The Driver Door Module (DDM) Will Not Enter Training Mode
Normal Operation
For the Driver Door Module (DDM) to enter Tire Pressure Monitoring System (TPMS) sensor training mode, it must receive valid inputs from the following:
- Brake Pedal Position (BPP) switch - OFF-ON-OFF
- Ignition switch - both OFF and RUN
- Vehicle speed sensor - 0 km/h (0 mph)
Refer to Tire Pressure Monitoring System (TPMS) Sensor Training Programming and Relearning for the complete sensor training procedure.
The Brake Pedal Position (BPP) switch input is supplied to Central Junction Box (CJB) fuse 28 (7.5A) along circuit 511 (LG) and then to the Lighting Control Module (LCM) along circuit 1651 (WH/RD). The LCM then provides the BPP information to the DDM along the Standard Corporate Protocol (SCP) communication bus.
The ignition switch input is supplied to the LCM from CJB fuse 8 (10A) along circuit 640 (RD/YE) and DDM fuse 5 (7.5A) along circuit 297 (BK/LG). The LCM then provides the ignition switch information to the DDM along the SCP communication bus. The vehicle speed input is supplied by the PCM to the instrument cluster along the High Speed Controller Area Network (HS-CAN) bus, then from the instrument cluster to the DDM along the SCP communication bus.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- Ignition switch
- Vehicle Speed Sensor (VSS)
- BPP switch
- PCM
- DDM
PINPOINT TEST E: THE DRIVER DOOR MODULE (DDM) WILL NOT ENTER TRAINING MODE
NOTICE: Use the Flex Probe Kit for all test connections to prevent damage to the wiring terminals. Do not use standard multi-meter probes.
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E1 CHECK FOR MODULE DTCs
- Ignition OFF.
- Connect the scan tool.
- Ignition ON.
- Retrieve and record any LCM, PCM, DDM, HS-CAN bus or SCP bus DTCs.
- Are there any DTCs present?
Yes
For LCM DTCs, REFER to Body Control Systems.
For PCM DTCs, REFER to Computers and Control Systems Information.
For DDM DTCs, REFER to Body Control Systems.
For HS-CAN bus and SCP bus DTCs, REFER to Information Bus.
No
GO to E2.
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E2 CHECK THE VSS
- Drive the vehicle and observe the speedometer.
- Is the speedometer working and displaying the correct speed?
Yes
GO to E3.
No
REFER to Instrument Panel, Gauges and Warning Indicators to diagnose the instrument cluster.
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E3 CHECK THE LCM BRAKE PEDAL SWITCH (LCM_BOO) PID
- Enter the following diagnostic mode on the scan tool: DataLogger LCM.
- Observe the LCM_BOO PID while pressing and releasing the brake pedal.
- Does the PID match the BPP?
Yes
GO to E4.
No
REFER to Brake Lamp to diagnose the BPP switch. Testing and Inspection
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E4 CHECK THE LCM IGNITION SWITCH (IGN_SW) PID
- Observe the IGN_SW PID while turning the ignition switch from RUN to OFF and back to RUN again.
- Does the PID match the ignition switch position?
Yes
GO to E5.
No
REFER to Body Control Systems to diagnose the LCM.
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E5 CHECK THE DDM CONNECTORS
- Disconnect all the DDM connectors.
- Check for:
- corrosion.
- pushed-out pins.
- spread terminals.
- Connect all the DDM 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 DDM. 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. TEST the system for normal operation.
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