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LAN-12 < SYSTEM DESCRIPTION > [CAN FUNDAMENTAL] TROUBLE DIAGNOSIS CAN Diagnosis with CONSULT INFOID:0000000009471914 CAN diagnosis on CONSULT extracts the root cause by receiving the following information. • Response to the system call • Control unit diagnosis information • Self-diagnosis • CAN diagnostic support monitor Self-Diagnosis INFOID:0000000009471915 If communication signals cannot be transmitted or received among units communicating via CAN communica- tion line, CAN communication-related DTC is displayed on the CONSULT “Self Diagnostic Result” screen. NOTE: The following table shows examples of CAN communication-related DTC. For other DTC, refer to the applica- ble sections. CAN Diagnostic Support Monitor INFOID:0000000009471916 MONITOR ITEM (CONSULT) Unit name Symptom ECM • Engine torque limiting is affected, and shift harshness increases. BCM • Reverse warning chime does not sound. wiper switch being in the intermittent position. • The room lamp does not turn ON. tion switch OFF.) • The steering lock does not release (if an error or malfunction occurs while turning the ignition switch OFF.) EPS control unit The steering effort increases. Combination meter • The tachometer and the speedometer do not move. ABS actuator and electric unit (control unit) Normal operation. TCM No impact on operation. IPDM E/R When the ignition switch is ON, DTC Self-diagnosis item (CONSULT indication) DTC detection condition Inspection/Action U1000 CAN COMM CIRCUIT ECM When ECM is not transmitting or receiving CAN Start the inspection. Re- Except When a control unit (except for ECM) is not U1001 CAN COMM CIRCUIT When ECM is not transmitting or receiving CAN communi- U1002 SYSTEM COMM When a control unit is not transmitting or receiving CAN U1010 CONTROL UNIT(CAN) When an error is detected during the initial diagnosis for Replace the control unit |