Diagnosis Procedure

With CONSULT 

1. Turn ignition switch OFF.
2. Disconnect EPS control unit harness connector.
3. Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or replace terminal.
4. Reconnect connectors and then perform self-diagnosis for "EPS" with CONSULT.

   Is any item indicated on the self-diagnosis display? 

   YES: GO TO 2.

   NO: Poor connection of connector terminal. Repair or replace connector.

1. Turn ignition switch OFF.
2. Disconnect EPS control unit harness connector.
3. Turn ignition switch ON.
   CAUTION: Never start the engine.
4. Check voltage between EPS control unit harness connector terminals and ground.

   EPS control unit		-	Voltage
   Connector	Terminal
   M38	1	Ground	Battery voltage
   M37	3

5. Turn ignition switch OFF.
6. Check voltage between EPS control unit harness connector terminals and ground.

   EPS control unit		-	Voltage
   Connector	Terminal
   M38	1	Ground	Battery voltage
   M37	3		Approx. 0 V

   Is the inspection result normal? 

   YES: GO TO 3.

   NO: Repair or replace malfunctioning components.

1. Check continuity between EPS control unit harness connector terminal and ground.

   EPS control unit		-	Continuity
   Connector	Terminal
   M38	2	Ground	Existed

2. Connect EPS control unit harness connector.

   Is the inspection result normal? 

   YES: GO TO 4.

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

With CONSULT 

Perform self-diagnosis for "EPS" with CONSULT.

Is "C1608 CONTROL UNIT" indicated in self-diagnosis display? 

YES: Replace EPS control unit. Refer to "EXPLODED VIEW ".

NO: INSPECTION END