Diagnosis Procedure

1. Turn ignition switch OFF.
2. Check that the following fuse is not blown (open).

   Power source	Fuse No.	Capacity
   Battery	#55	15 A
   Ignition switch ON	#93	5 A

Is the fuse blown (open)?

YES 

Replace fuse after repairing the applicable circuit.

NO 

GO TO STEP 2  .

Check the voltage between display control unit harness connector and ground.

Is the inspection result normal?

YES 

GO TO STEP 3  .

NO 

Perform trouble diagnosis for battery power supply circuit.

1. Turn ignition switch ON.
2. Check the voltage between display control unit harness connector and ground.

   (+)		(-)	Standard value	Reference value
   Display control unit
   Connector	Terminal
   M52	63	Ground	4.5 - 16.0 V	Battery voltage

Is the inspection result normal?

YES 

GO TO STEP 4  .

NO 

Perform trouble diagnosis for accessory power supply circuit.

Check the voltage between display control unit harness connector and ground.

Is the inspection result normal?

YES 

GO TO STEP 5  .

NO 

Perform trouble diagnosis of ignition power supply circuit.

1. Turn ignition switch OFF.
2. Disconnect display control unit connector.
3. Check the continuity between display control unit harness connector and ground.

   (+)		(-)	Continuity
   Display control unit
   Connector	Terminal
   M52	52	Ground	Existed

Is the inspection result normal?

YES 

INSPECTION END

NO 

Repair or replace harness or connector.