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TROUBLESHOOTING ACTIVE STABILITY CONTROL SYSTEM (ASC) 35C-53 Code No. C1278: Valve relay stuck OFF CAUTION If there is any problem in the CAN bus lines, an OPERATION • ASC-ECU contains the power supply circuit (ter- minal No. 44) for the solenoid valve. The solenoid • The valve relay, which is incorporated in ASC-ECU, is always energising the solenoid DIAGNOSIS CODE SET CONDITIONS When the solenoid valve is not energised even after PROBABLE CAUSES Current trouble • Damaged wiring harness and connectors • The ABS-ECU is defective. Hydraulic unit (Motor and Solenoid Valve) Circuit Wire colour code FUSIBLE FUSIBLE 3 5 ASC-ECU HYDRAULIC UNIT SOLENOID ABS SOLENOID VALVE MOTOR MOTOR Main Index Group TOC |