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STC-16 < DTC/CIRCUIT DIAGNOSIS > POWER STEERING SOLENOID VALVE POWER STEERING SOLENOID VALVE Component Function Check INFOID:0000000006256126 1. CHECK POWER STEERING SOLENOID VALVE OPERATION Check changes in steering force from a halt condition to high-speed driving. YES >> INSPECTION END NO >> Check the power steering solenoid valve. Refer to Diagnosis Procedure INFOID:0000000006256127 1. CHECK POWER STEERING SOLENOID VALVE SIGNAL 1. Turn the ignition switch OFF. 2. Check the voltage between power steering control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 4. NO >> GO TO 2. 2. CHECK HARNESS BETWEEN POWER STEERING SOLENOID VALVE AND POWER STEERING CON- TROL UNIT 1. Turn the ignition switch OFF. 2. Disconnect power steering solenoid valve harness connector. 3. Disconnect power steering control unit harness connector. 4. Check the continuity between power steering solenoid valve harness connector and the power steering 5. Check the continuity between power steering control unit harness connector and ground. Is the inspection result normal? YES >> GO TO 3. NO >> Repair or replace error-detected parts. 3. CHECK POWER STEERING SOLENOID VALVE Check the power steering solenoid valve. Refer to STC-17, "Component Inspection" . Is the inspection result normal? YES >> GO TO 4. NO >> Replace gear-sub assembly. Refer to ST-43, "Disassembly and Assembly" . Power steering control unit — Condition Voltage (Approx.) Connector Terminal M108 1 Ground Vehicle speed: 0 km/h (0 MPH) 4.4 – 6.6 V Vehicle speed: 100 km/h (62 MPH) 2.4 – 3.6 V Power steering solenoid valve Power steering control unit Continuity Connector Terminal Connector Terminal F45 1 M108 1 Existed 2 5 Existed Power steering control unit — Continuity Connector Terminal M108 1 Ground Not existed 5 |