DTC U0001:88/U0100:00/U0121:00/U0155:00/U0214:00 [REAR VEHICLE MONITORING SYSTEM]

id0902z2841700

System malfunction location	U0001:88 •  Unit communication error (MS-CAN) U0100:00 •  Communication error with PCM U0121:00 •  Communication error with DSC HU/CM U0155:00 •  Communication error with instrument cluster U0214:00 •  Communication error with start stop unit
Detection condition	•  U0001:88 ―  The rear vehicle monitoring control module (RH) detects a CAN bus communication line (MS-CAN) malfunction. •  U0100:00 ―  The rear vehicle monitoring control module (RH) cannot receive CAN signal from the PCM for 2 s or more. •  U0121:00 ―  Rear vehicle monitoring control module (RH) cannot receive CAN signal from the DSC HU/CM for 2 s or more. •  U0155:00 ―  The rear vehicle monitoring control module (RH) cannot receive CAN signal from the instrument cluster for 2 s or more. •  U0214:00 ―  The rear vehicle monitoring control module (RH) cannot receive CAN signal from the start stop unit for 2 s or more.
Fail-safe	•  U0001:88 ―  Inhibits the rear vehicle monitoring system. •  U0100:00 ―  Inhibits the rear vehicle monitoring system. •  U0121:00 ―  Inhibits the rear vehicle monitoring system. •  U0155:00 ―  Inhibits the rear vehicle monitoring system. •  U0214:00 ―  Inhibits the rear vehicle monitoring system.
Possible cause	•  Malfunction in CAN bus communication line •  Malfunction in CAN communication line between PCM and rear vehicle monitoring control module (RH) ―  Instrument cluster communication error (vehicle speed signal is not sent via instrument cluster from PCM) •  Malfunction in CAN line between the DSC HU/CM and rear vehicle monitoring control module (RH) ―  Instrument cluster communication error (yaw rate signal is not sent via instrument cluster from DSC HU/CM) •  Malfunction in CAN communication line between instrument cluster and rear vehicle monitoring control module (RH) •  Malfunction in CAN communication line between start stop unit and rear vehicle monitoring control module (RH) ―  Instrument cluster communication error (turn switch signal is not sent via instrument cluster from start stop unit)
System wiring diagram	—

Diagnostic Procedure