Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM - WITH AUTOMATIC DRIVE POSITIONER  or WIRING DIAGRAM - WITHOUT AUTOMATIC DRIVE POSITIONER .

1. CHECK FUSES
   
   

   Check for blown combination meter fuses.

   Unit	Power source	Fuse No.
   Combination meter	Battery	13
   		65
   	Ignition switch ON or START	31

   Is the inspection result normal?

   YES 

   GO TO STEP 2 

   NO 

   Replace the fuse after repairing the affected circuit.

2. POWER SUPPLY CIRCUIT CHECK
   
   
   1. Disconnect combination meter connector.
   2. Check voltage between combination meter harness connector M24 terminals 5, 21, 22 and ground.

   Terminals			Ignition switch position
   (+)		(-)	OFF	ACC	ON	START
   Connector	Terminal
   M24	22	Ground	Battery voltage	Battery voltage	Battery voltage	Battery voltage
   	21		0V	0V	Battery voltage	Battery voltage
   	5		0V	Battery voltage	Battery voltage	0V

   Is the inspection result normal?

   YES 

   GO TO STEP 3 

   NO 

   Repair or replace harness or connectors.

3. GROUND CIRCUIT CHECK
   
   
   1. Turn ignition switch OFF.
   2. Check continuity between combination meter harness connector M24 terminals 1, 2 and ground.

   Terminals			Continuity
   (+)		(-)
   Connector	Terminal
   M24	1	Ground	Yes
   	2

   Is the inspection result normal?

   YES 

   Inspection End.

   NO 

   Repair or replace harness or connectors.