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BRC-106 < COMPONENT DIAGNOSIS > [VDC/TCS/ABS] C1140 ACTUATOR RELAY SYSTEM C1140 ACTUATOR RELAY SYSTEM Description INFOID:0000000003766924 Activates or deactivates each solenoid valve according to the signals transmitted by the ABS actuator and DTC Logic INFOID:0000000003766925 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. DTC REPRODUCTION PROCEDURE 1. Turn the ignition switch ON. 2. Perform ABS actuator and electric unit (control unit) self-diagnosis. Is DTC “C1140” detected? YES >> Proceed to diagnosis procedure. Refer to BRC-106, "Diagnosis Procedure" . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000003766926 1. CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect ABS actuator and electric unit (control unit) connector. 3. Check terminal for deformation, disconnection, looseness, etc. Is the inspection result normal? YES >> GO TO 2. NO >> Repair or replace damaged parts. 2. CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT Check the voltage between ABS actuator and electric unit (control unit) harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace damaged parts. 3. CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT Check the continuity between ABS actuator and electric unit (control unit) harness connector and ground. DTC Display item Malfunction detected condition Possible cause C1140 ACTUATOR RLY During the actuator relay operating with OFF, when the • Harness or connector (control unit) During the actuator relay operating with ON, when the ABS actuator and electric unit (control unit) — Voltage Connector Terminal E36 3 Ground Battery voltage ABS actuator and electric unit (control unit) — Continuity Connector Terminal E36 1 Ground Existed 4 |