DTC U2121-00: Can Communication System: Communication Error To Vehicle Control Module (VCM)
U2121:00 (PCM - VIN M) DETECTION CONDITION AND POSSIBLE CAUSE
| System malfunction location |
CAN communication system: Communication error to vehicle control module (VCM) |
| Detection condition |
- Communication error between the PCM and vehicle control module (VCM) continues for a specified period of time.
|
| Fail-safe |
- Inhibits engine-stop by operating the i-stop function.
|
| Possible cause |
- Malfunction in CAN communication line between vehicle control module (VCM) and PCM
- 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 M)
in the service information.)
|
| Repeatability verification procedure |
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| System wiring diagram |
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