Diagnosis Procedure

Regarding Wiring Diagram information, refer to appropriate wiring diagram.

1. CHECK COMBINATION METER INPUT SIGNAL 
   1. Turn ignition switch ON.
   2. Check voltage between combination meter harness connector M24 (with Type A meter), or M163 (with Type B meter), and ground.

      Combination meter			Condition	Voltage (Approx.)
      Connector	Terminal
      M24 (with Type A meter) M163 (with Type B meter)	28	Ground	When driver seat belt is fastened	Battery voltage
      			When driver seat belt is unfastened	0 V

   Is the inspection result normal?

   YES

   Replace combination meter. Refer to Removal and Installation .

   NO

   GO TO 2 .

2. CHECK SEAT BELT BUCKLE SWITCH LH CIRCUIT 
   1. Turn ignition switch OFF.
   2. Disconnect combination meter harness connector M24 (with Type A meter), or M163 (with Type B meter), and seat belt buckle switch LH harness connector B216 (with driver power seat) or B217 (without driver power seat).
   3. Check continuity between combination meter harness connector M24 (with Type A meter), or M163 (with Type B meter), and seat belt buckle switch LH harness connector B216 (with driver power seat) or B217 (without driver power seat).
      With driver power seat
      
      

      Combination meter		Seat belt buckle switch LH		Continuity
      Connector	Terminal	Connector	Terminal
      M24 (with Type A meter)	28	B216	3	Yes

      Without driver power seat
      
      

      Combination meter		Seat belt buckle switch LH		Continuity
      Connector	Terminal	Connector	Terminal
      M24 (with Type A meter) M163 (with Type B meter)	28	B217	3	Yes

   4. Check continuity between combination meter harness connector M24 (with Type A meter), or M163 (with Type B meter) and ground.

      Combination meter		Ground	Continuity
      Connector	Terminal
      M24 (with Type A meter) M163 (with Type B meter)	28		No

   Is the inspection result normal?

   YES

   GO TO 3 .

   NO

   Repair or replace harness or connector.

3. CHECK SEAT BELT BUCKLE SWITCH LH GROUND CIRCUIT 

   Check continuity between seat belt buckle switch LH harness connector B216 (with driver power seat) or B217 (without driver power seat) and ground.

   With driver power seat
   
   

   Seat belt buckle switch LH		Ground	Continuity
   Connector	Terminal
   B216	4		Yes

   Without driver power seat
   
   

   Seat belt buckle switch LH		Ground	Continuity
   Connector	Terminal
   B217	4		Yes

   Is the inspection result normal?

   YES

   Inspection End.

   NO

   Repair or replace harness or connector.