FixVault

Symptom Troubleshooting Index

  1. Check for B-CAN DTCs. If any B-CAN DTCs are indicated, troubleshoot and resolve them first.
  2. If the door lock system and the keyless operation do not work, troubleshoot the door locks first.
    NOTE: The system does not function when the ignition switch is ON (II).
    Symptom Check Items Also check for
    All the doors will not lock or unlock with driver's door key cylinder or door lock switch or keyless transmitter
    • Poor ground (G502, G506, G507, G601, G606)
    • Driver's door key cylinder switch test
    • Door switch test (check the door switch ON/OFF information with the HDS)
    • Door lock switch test (check the door lock switch ON/OFF information with the HDS)
    • Door lock actuator test
    • MICU input test
    • Rear fuse/relay box input test
    • Driver's MPCS unit input test
    • Front passenger's MPCS unit input test
    • Check for UART line

    • An open in the wire
    • A short to ground in the wire
    • A short to power in the wire
     
    Keyless operation does not work (LOCK, UNLOCK, PANIC) Symptom troubleshooting Customized settings in the multi-information display (MID), see Owner's manual for details
    Doors will not unlock (or lock) with the transmitter, but will unlock (or lock) with the door lock switch and the door key cylinder switch
    • Symptom troubleshooting
    • Door lock switch test (check the door lock switch ON/OFF information with the HDS)
     
    Doors automatically relock 30, 60, or 90 seconds after being unlocked with the transmitter even though a door has been opened
    • Symptom troubleshooting
    • Door switch test (check the door switch ON/OFF information with the HDS)
     
    Only driver's door will unlock or door locks relock immediately after unlocking with the keyless transmitter Driver's door lock knob switch test  
    Tailgate will not release  
    The horn does not sound and/or the headlights do not flash when the PANIC button on the transmitter is pressed Symptom troubleshooting Customized settings in the multi-information display (MID), see Owner's manual for details
    Keyless operation will work even though the ignition key is in the ignition switch Ignition key switch test (see IGNITION KEY SWITCH TEST )  
    Security alarm system will not arm Symptom troubleshooting