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POWER SUPPLY AND GROUND CIRCUIT STC-81 < DTC/CIRCUIT DIAGNOSIS > [WITH REAR ACTIVE STEER] C D E F H I J K L M A B STC N O P POWER SUPPLY AND GROUND CIRCUIT Description INFOID:0000000005549735 Supplies power to RAS control unit. Diagnosis Procedure INFOID:0000000005549736 1. CHECK RAS CONTROL UNIT POWER SUPPLY 1. Turn the ignition switch OFF. 2. Disconnect RAS control unit harness connector. 3. Check the voltage between RAS control unit harness connectors and ground. 4. Turn the ignition switch ON. CAUTION: Never start the engine. 5. Check the voltage between RAS control unit harness connectors and the ground. Is the inspection result normal? YES >> GO TO 2. NO >> Check the following items. Repair or replace the malfunctioning parts. • 10A fuse (#45) open the ground • Open between the ignition switch and RAS control unit harness connector No. 27 terminal 2. CHECK RAS MOTOR POWER SUPPLY CIRCUIT (1) 1. Turn the ignition switch OFF. 2. Remove RAS motor relay. 3. Check the continuity between RAS motor relay harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace the harnesses and connectors. 3. CHECK RAS MOTOR POWER SUPPLY CIRCUIT (2) Check the voltage between RAS motor relay harness connector and ground. Is the inspection result normal? RAS control unit — Voltage (Approx.) Connector Terminal B37 27 Ground 0 V RAS control unit — Voltage (Approx.) Connector Terminal B37 27 Ground Battery voltage RAS motor relay — Continuity Connector Terminal B36 2 Ground Existed 1 Not existed RAS motor relay — Voltage (Approx.) Connector Terminal B36 3 Ground Battery voltage |