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STC-98 < COMPONENT DIAGNOSIS > [WITH 4WAS] C1911, C1912 4WAS REAR MOTOR POWER SUPPLY 4. Check the continuity between the noise suppressor harness connector terminal and 4WAS main control Is the inspection result normal? YES >> GO TO 5. NO >> Repair or replace the harnesses and connectors. 5. CHECK 4WAS REAR MOTOR POWER SUPPLY CIRCUIT (4) 1. Connect 4WAS main control unit harness connector. 2. Turn the ignition switch ON. CAUTION: Never start the engine. 3. Check the voltage between 4WAS main control unit harness connectors and the ground. 4. Turn the ignition switch OFF. Is the inspection result normal? YES >> GO TO 6. NO >> Replace 4WAS main control unit. Refer to 6. CHECK 4WAS REAR MOTOR RELAY 1. Apply 12 V to 4WAS rear motor relay connector No. 1 terminal and No. 2 terminal. CAUTION: • Never make the terminals short. 2. Check the continuity between 4WAS rear motor relay connector terminals. 3. Check the resistance between 4WAS rear motor relay connector terminals. Is the inspection result normal? YES >> GO TO 7. NO >> Replace 4WAS rear motor relay. 7. CHECK NOISE SUPPRESSOR Check continuity between the noise suppressor connector terminals. Noise suppressor 4WAS main control unit Continuity Connector Terminal Connector Terminal B51 3 B54 37 Existed 5 40 Existed 4WAS main control unit Voltage (Approx.) Connector Terminal B54 25 – Ground Battery voltage 4WAS rear motor relay Continuity Connector Terminal Condition B53 3 – 5 Apply the voltage between Existed Do not apply the voltage be- Not existed 4WAS rear motor relay Resistance (Approx.) Connector Terminal B53 1 – 2 50 Ω |