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LAN TROUBLE DIAGNOSIS LAN-9 < SYSTEM DESCRIPTION > [CAN FUNDAMENTAL] C D E F G H I J K L B A O P N Symptom When Error Occurs in CAN Communication System INFOID:0000000009014726 In CAN communication system, multiple control units mutually transmit and receive signals. Each control unit cannot transmit and receive signals if any error occurs on CAN communication line. Under this condition, mul- tiple control units related to the root cause malfunction or go into fail-safe mode. ERROR EXAMPLE NOTE: Each vehicle differs in symptom of each control unit under fail-safe mode and CAN communication line wiring. Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit) Open Circuit JSMIA0442GB Unit name Major symptom ECM Engine torque limiting is affected, and shift harshness increases. BCM • Reverse warning buzzer does not sound. er switch being in the intermittent position. EPS control unit The steering effort increases. Combination meter • The shift position indicator and OD OFF indicator turn OFF. ABS actuator and electric unit (control unit) Normal operation. TCM No impact on operation. IPDM E/R When the ignition switch is ON, |