Diagnosis Procedure

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

1. CHECK LIFTING MOTOR LH (REAR) POWER SUPPLY
   
   

   CONSULT

   1. Turn the ignition switch to ACC.
   2. Perform "SEAT LIFTER RR" in "Active Test" mode of "AUTO DRIVE POS." See STEP  1.
   3. Check voltage between driver seat control unit harness connector and ground.

      (+)		(-)	Condition		Voltage (V) (Approx.)
      Driver seat control unit
      Connector	Terminal
      B214	40	Ground	SEAT LIFTER RR	OFF	0
      				UP	0
      				DWN (down)	Battery voltage
      	41			OFF	0
      				UP	Battery voltage
      				DWN (down)	0

   Is the inspection result normal?

   YES 

   Replace lifting motor LH (rear). Refer to EXPLODED VIEW WITH TORQUE SPECIFICATIONS.

   NO 

   GO TO STEP 2. 

2. CHECK LIFTING MOTOR (REAR) CIRCUIT
   
   
   1. Turn ignition switch OFF.
   2. Disconnect driver seat control unit and lifting motor LH (rear).
   3. Check continuity between driver seat control unit harness connector and lifting motor LH (rear) harness connector.

      Driver seat control unit		Lifting motor LH (rear)		Continuity
      Connector	Terminal	Connector	Terminal
      B214	41	B218	5	Yes
      	40		4

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

      Driver seat control unit		Ground	Continuity
      Connector	Terminal
      B214	41		No
      	40

   Is the inspection result normal?

   YES 

   GO TO STEP 3. 

   NO 

   Repair or replace harness.

3. 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.