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
Turn the ignition switch OFF.
Disconnect power steering solenoid valve harness connector.
Disconnect power steering control unit harness connector.
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
Check resistance between power steering solenoid valve terminals.
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).