Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM - JAPAN PRODUCTION , or WIRING DIAGRAM - USA PRODUCTION .

1. CHECK RECLINING SWITCH SIGNAL
   
   
   1. Turn ignition switch OFF.
   2. Check voltage between driver seat control unit harness connector and ground.

   (+)		(-)	Condition		Voltage (V) (Approx.)
   Driver seat control unit
   Connector	Terminals
   B213	25	Ground	Reclining switch	Operate (forward)	0
   				Release	Battery voltage
   	8			Operate (backward)	0
   				Release	Battery voltage

   Is the inspection result normal?

   YES 

   GO TO STEP 5  .

   NO 

   GO TO STEP 2  .

2. CHECK RECLINING SWITCH CIRCUIT
   
   
   1. Turn ignition switch OFF.
   2. Disconnect driver seat control unit and power seat switch LH.
   3. Check continuity between driver seat control unit harness connector and power seat switch LH harness connector.

      Driver seat control unit		Power seat switch LH connector		Continuity
      Connector	Terminal	Connector	Terminal
      B213	25	B215	5	Yes
      	8		10

   4. Check continuity between driver seat control unit harness connector and ground.

      Driver seat control unit		Ground	Continuity
      Connector	Terminal
      B213	25		No
      	8

   Is the inspection result normal?

   YES 

   GO TO STEP 3  .

   NO 

   Repair or replace harness.

3. CHECK DRIVER SEAT CONTROL UNIT OUTPUT
   
   
   1. Connect the driver seat control unit.
   2. Turn ignition switch ON.
   3. Check voltage between driver seat control unit harness connector and ground.

   (+)		(-)	Voltage (V) (Approx.)
   Driver seat control unit
   Connector	Terminals
   B213	8	Ground	Battery voltage
   	25

   Is the inspection result normal?

   YES 

   GO TO STEP 4  .

   NO 

   Replace driver seat control unit. Refer to REMOVAL AND INSTALLATION .

4. CHECK RECLINING SWITCH
   
   

   Refer to COMPONENT INSPECTION .

   Is the inspection result normal?

   YES 

   GO TO STEP 5  .

   NO 

   Replace power seat switch LH. Refer to REMOVAL AND INSTALLATION .

5. CHECK INTERMITTENT INCIDENT
   
   

   Refer to INTERMITTENT INCIDENT .

   Is the inspection result normal?

   YES 

   Replace driver seat control unit. Refer to REMOVAL AND INSTALLATION .

   NO 

   Repair or replace the malfunctioning part.