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C1684, C1685 4WAS MAIN CONTROL UNIT COMMUNICATION STC-79 < COMPONENT DIAGNOSIS > [WITH 4WAS] C D E F H I J K L M A B STC N O P 4. Check the continuity between 4WAS front control unit harness connector and ABS actuator and electric 5. Check that 4WAS front control unit connector No. 14 terminal and No. 25 are connected properly and not Is the inspection result normal? YES >> Replace 4WAS front control unit. Refer to . NO >> Repair or replace the harnesses and connectors. Refer to STC-176, "Precautions for Harness 8. CHECK 4WAS MAIN CONTROL UNIT CIRCUIT 1. Turn the ignition switch OFF. 2. Disconnect 4WAS main control unit harness connector. 3. Disconnect ABS actuator and electric unit (control unit) harness connector. 4. Check the continuity between 4WAS main control unit harness connector and ABS actuator and electric 5. Check that 4WAS main control unit connector No. 31 terminal and No. 32 are connected properly and not Is the inspection result normal? YES >> Replace 4WAS main control unit. Refer to NO >> Repair or replace the harnesses and connectors. Refer to STC-176, "Precautions for Harness Component Inspection [ABS Actuator and Electric Unit (Control Unit)] INFOID:0000000001666372 1. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) 1. Turn the ignition switch OFF. 2. Remove ABS actuator and electric unit (control unit). Refer to 3. Check the resistance between ABS actuator and electric unit (control unit) connector terminals. Is the inspection result normal? YES >> INSPECTION END NO >> Replace ABS actuator and electric unit (control unit). Component Inspection (Yaw Rate/Side G Sensor) INFOID:0000000001666373 1. CHECK YAW RATE/SIDE G SENSOR 1. Turn the ignition switch OFF. 2. Remove yaw rate/side G sensor. Refer to . 3. Check the resistance between yaw rate/side G sensor connector terminals. 4WAS front control unit ABS actuator and electric unit (control unit) Continuity Connector Terminal Connector Terminal M42 14 E41 25 Existed 25 45 4WAS main control unit ABS actuator and electric unit (control unit) Continuity Connector Terminal Connector Terminal B54 31 E41 45 Existed 32 25 ABS actuator and electric unit (control unit) Resistance (Approx.) Connector Terminal E41 25 – 45 120 Ω |