DTC U0001:88/U0100:00/U0101:00/U0121:00 [ELECTRONIC 4WD CONTROL SYSTEM]

id0302a6200800

DTC U0001:88
CAN line
DTC U0100:00
DTC U0101:00
DTC U0121:00
DETECTION CONDITION
•  U0001:88
?  Open or short circuit in CAN system wiring harness is detected.
•  U0100:00
?  Communication error with PCM is detected in CAN communication.
•  U0101:00
?  Communication error with TCM is detected in CAN communication.
•  U0121:00
?  Communication error to DSC HU/CM is detected in CAN communication
FAIL-SAFE FUNCTION
•  Refer to “Fail-safe function table”. (See DTC TABLE [ELECTRONIC 4WD CONTROL SYSTEM].)
POSSIBLE CAUSE
•  CAN system wiring harness open or short circuit
•  CAN system wiring harness open or short circuit with PCM
•  CAN system wiring harness open or short circuit with TCM
•  CAN system wiring harness open or short circuit with DSC HU/CM
SYSTEM WIRING DIAGRAM
Not applicable

Diagnostic Procedure

•  Perform inspection according to the diagnostic procedure in MULTIPLEX COMMUNICATION SYSTEM. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D.].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].)