Diagnosis Procedure

Diagnosis Procedure

1. CHECK FUSE

   1. Check that the following fuse is not blown:

      Signal name	Fuse No.	Capacity
      Ignition power supply	49	10 A

   Is the fuse blown?

   YES >>

   Replace the blown fuse after repairing the affected circuit.

   NO >>

   GO TO 2.

2. CHECK FUSIBLE LINK

   1. Check that the following fusible link is not blown:

      Signal name	Fusible link No.	Capacity
      Battery	H	80 A

   Is the fusible link blown?

   YES >>

   Replace the blown fusible link after repairing the affected circuit.

   NO >>

   GO TO 3.

3. POWER SUPPLY CIRCUIT CHECK

   1. 1. Disconnect EPS control unit connector.

      2. Check voltage between EPS control unit harness connector and ground.

      (+)		(—)	Ignition switch position
      EPS control unit
      Connector	Terminal		OFF	ON	START
      E74	7	Ground	Battery voltage	Battery voltage	Battery voltage
      E73	4		0 V	Battery voltage	Battery voltage

   Is the inspection result normal?

   YES >>

   GO TO 4.

   NO >>

   Repair or replace harness or connector.

4. GROUND CIRCUIT CHECK

   1. 1. Ignition switch OFF.

      2. Check continuity between EPS control unit harness connector and ground.

      EPS control unit		—	Continuity
      Connector	Terminal
      E74	8	Ground	Yes

   Is the inspection result normal?

   YES >>

   Inspection End.

   NO >>

   Repair or replace harness or connectors.