DTC U2121-00: Can Communication: Vehicle Control Module (VCM) And Pcm Communication Error
WARNING: This page is about a different variant/trim than selected.
U2121:00 (PCM - VIN Y) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
CAN communication: Vehicle control module (VCM) and PCM communication error |
| Detection condition |
- When the PCM detects a communication error between the vehicle control module (VCM) and the PCM for a predetermined period of time.
|
| Fail-safe |
|
| Possible cause |
- Malfunction in CAN communication line between PCM and vehicle control module (VCM)
- Vehicle control module (VCM) malfunction (built into body control module (BCM)) (Refer to applicable BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION
in the service information.)
- PCM malfunction (Refer to applicable PCM REMOVAL/INSTALLATION (VIN Y)
in the service information.)
|
| Repeatability verification procedure |
- Clear the DTC recorded in the memory. (see CLEARING DTC
.)
- Perform the KOEO or KOER self test. (See DTC INSPECTION
.)
|
| System wiring diagram |
|