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Pinpoint Test L: U300D:11

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  1. L1 CHECK THE TCCM IGNITION POSITION (KEY_POS_4X4) AND IGNITION STATUS (KEY_STATUS_4X4) PIDs 
    • Enter the following diagnostic mode on the scan tool: Data Logger - TCCM  .
    • Monitor the KEY_POS_4X4 and KEY_STATUS_4X4 PIDs.

    Do the ignition PIDs match the ignition switch positions? 

    • Yes  : The system is functioning correctly at this time. CLEAR the DTCs. TEST the system for normal operation.
    • No  : If the KEY_STATUS_4X4 PID did not match, CHECK BJB  fuse 54 (5A). If the fuse is OK, REPAIR circuit CBB54 (VT/OG). If the fuse is not OK, REFER to the OEM WIRING DIAGRAMS to identify the possible causes of the circuit short. After the fault is repaired, CLEAR the DTCs. TEST the system for normal operation.

      If the KEY_POS_4X4 PID did not match, REFER to STEERING COLUMN SWITCHES to diagnose the ignition switch. After the fault is repaired, CLEAR the DTCs. TEST the system for normal operation.

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