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Home >> Lexus >> 2004 >> GX 470 >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Abs With EBD & BA & TRAC & VSC System - Diagnosis >> DTC C1203/53: ECM Communication Circuit Malfunction >> Inspection Procedure

Inspection Procedure

  1. CHECK HARNESS AND CONNECTOR (ECM - SKID CONTROL ECU) 
    1. Check for open and short circuit in harness and connector between each of terminals ENG+, ENG-, TRC+, TRC- of skid control ECU and the same one of the ECM (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).

    NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK : CHECK AND REPLACE ECM OR SKID CONTROL ECU 

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