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LAN-8 [CAN FUNDAMENTAL] TROUBLE DIAGNOSIS Symptom When Error Occurs in CAN Communication System NKS004IT In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit ERROR EXAMPLE NOTE: ● Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring. ● Refer to Example: TCM branch line open circuit SKIB8738E Unit name Symptom ECM Engine torque limiting is affected, and shift harshness increases. BCM Reverse warning chime does not sound. EPS control unit Normal operation. Combination meter ● Shift position indicator and OD OFF indicator turn OFF. ● Warning lamps turn ON. ABS actuator and electric unit (control unit) Normal operation. TCM No impact on operation. IPDM E/R Normal operation. |