Diagnosis Procedure

1. Turn the ignition switch OFF.
2. Disconnect power steering control unit harness connector.
3. Check voltage between power steering control unit harness connector and ground.
4. Turn the ignition switch ON.
   POWER STEERING CONTROL UNIT VOLTAGE CHART
   
   

   Power steering control unit		-	Voltage
   Connector	Terminal
   M108	3	Ground	0 V

   CAUTION: Never start the engine.
5. Check voltage between power steering control unit harness connector and ground.
   POWER STEERING CONTROL UNIT VOLTAGE CHART
   
   

   Power steering control unit		-	Voltage
   Connector	Terminal
   M108	3	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: Check the following. If any items are damaged, repair or replace damaged parts.

   • 10A fuses (#45) open
     • Harness for short or open between ignition switch and power steering control unit harness connector No. 3 terminal.
     • Ignition switch. Refer to "Removal And Installation ".

1. Turn the ignition switch OFF.
2. Check continuity between power steering control unit harness connector and ground.
   POWER STEERING CONTROL UNIT VOLTAGE CHART
   
   

   Power steering control unit		-	Continuity
   Connector	Terminal
   M108	6	Ground	Existed

   Is the inspection result normal? 

   YES: GO TO 3.

   NO: Repair open circuit or short to power in harness or connectors.

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

Is the inspection result normal? 

YES: INSPECTION END

NO: Repair or replace damaged parts.