Nissan Altima (L32) 2007-2012 Service Manual: Power steering solenoid valve

Description

• Power steering solenoid valve controls the power steering oil pressure in the gear housing assembly.

Diagnosis Procedure

1.CHECK POWER STEERING SOLENOID VALVE SIGNAL

1. Start engine.

2. Check voltage between power steering control unit harness connector M59 terminal 1 and ground.

Is the inspection result normal? YES >> GO TO 2.

NO >> GO TO 4.

2.CHECK HARNESS BETWEEN POWER STEERING SOLENOID VALVE AND POWER STEERING CONTROL 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 E14 (A) terminal 1 and 2 and the power steering control unit harness connector M59 (B) terminal 1 and 5.

Also check harness for short to ground and short to power.

Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace damaged parts.

3.CHECK POWER STEERING SOLENOID VALVE

1. Check resistance between power steering solenoid valve terminals.

2. Check power steering solenoid valve by listening for its operation sound while applying battery voltage to power steering solenoid valve terminal 1 (positive) and battery ground to terminal 2 (negative).

Is the inspection result normal? YES >> GO TO 4.

NO >> Replace power steering solenoid valve. Refer to ST-28, "Exploded View".

4.CHECK TERMINALS AND HARNESS CONNECTORS

• Check power steering control unit pin terminals for damage or loose connection with harness connector.

• Check power steering solenoid valve pin terminals for damage or loose connection with harness connector.

Is the inspection result normal? YES >> Inspection End

NO >> Repair or replace damaged parts.