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STC-138 < COMPONENT DIAGNOSIS > [WITH 4WAS] POWER STEERING SOLENOID VALVE POWER STEERING SOLENOID VALVE Description INFOID:0000000000958910 • The power steering oil pressure in the gear housing assembly is controlled. Diagnosis Procedure INFOID:0000000000958911 1. CHECK POWER STEERING SOLENOID VALVE SIGNAL With CONSULT-III 1. Start the engine. 2. Check “POWER STR SOL” item on “DATA MONITOR” of 4WAS main control unit. Without CONSULT-III 1. Start the engine. 2. Check the voltage between 4WAS main control unit harness connector and the ground. 3. Check that there is no malfunction in 4WAS main control unit harness connector or disconnection. Is the inspection result normal? YES >> GO TO 2. NO >> Replace 4WAS main control unit. Refer to 2. CHECK POWER STEERING SOLENOID VALVE CIRCUIT 1. Turn the ignition switch OFF. 2. Disconnect 4WAS main control unit harness connector. 3. Disconnect the power steering solenoid valve harness connector. 4. Check the continuity between 4WAS main control unit harness connector and power steering solenoid 5. Check the continuity between power steering solenoid valve harness connector and the ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace the harnesses and connectors. Monitor item Condition Display value POWER STR SOL Vehicle speed: 0 km/h (0 MPH) Approx. 1.10 A Vehicle speed: 100 km/h (62 MPH) Approx. 0.42 A 4WAS main control unit Data (Approx.) Connector Terminal Condition B54 36 – Ground Vehicle speed: 0 km/h (0 MPH) 4.4 – 6.6 V Vehicle speed: 100 km/h (62 2.4 – 3.6 V 4WAS main control unit Power steering solenoid valve Continuity Connector Terminal Connector Terminal M54 36 F45 1 Existed Power steering solenoid valve Continuity Connector Terminal F45 2 – Ground Existed |