Nissan Altima 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?


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.


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


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


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.

    Power supply and ground circuit
    Description • EPS system functions by ignition power supply. Diagnosis Procedure 1.CHECK POWER SUPPLY 1. Turn the ignition switch OFF. 2. Disconnect power steering control unit harness c ...

    Engine speed signal circuit
    Description • ECM sends engine speed signal to power steering control unit. Diagnosis Procedure 1.PERFORM ECM SELF-DIAGNOSIS Perform ECM self-diagnosis. Is any error system detected? Y ...

    Other materials:

    On board refueling vapor recovery (ORVR)
    Description From the beginning of refueling, the air and vapor inside the fuel tank go through refueling EVAP vapor cut valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by the EVAP canister and the air is released to the atmosphere. When the refueling has reached the ...

    Precaution
    Supplemental Restraint System SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the ...

    Speedometer and odometer
    Speedometer The speedometer indicates vehicle speed. Odometer/Twin trip odometer The odometer 1 and the twin trip odometer 2 are displayed below the Vehicle Information Display when the ignition switch is placed in the ON position. The odometer records the total distance the vehicle ha ...