Check Reclining Switch Circuit

With CONSULT-II 

With "RECLN SW-FR, RECLN SW-RR" on the DATA MONITOR, operate the reclining switch to check ON/OFF operation.

Fig 1: CONSULT II Display - DATA MONITOR

Without CONSULT-II 

1. Turn ignition switch OFF.
2. Check voltage between driver seat control unit connector and ground.
   VOLTAGE SPECIFICATION
   
   

   Driver seat control unit	Terminals		Condition	Voltage (V) (Approx.)
   	(+)	(-)
   B204	12	Ground	Reclining switch ON (BACKWARD operation)	0
   			Other than above	Battery voltage
   	27		Reclining switch ON (FORWARD operation)	0
   			Other than above	Battery voltage

   Fig 2: Checking Voltage Between Driver Seat Control Unit Connector And Ground

   

OK or NG 

OK: Reclining switch circuit is OK.

NG: GO TO 2.

1. Disconnect driver seat control unit and power seat switch connector.
2. Check continuity between driver seat control unit connector and power seat switch connector.
   CONTINUITY SPECIFICATION
   
   

   A		B		Continuity
   Driver seat control unit connector	Terminal	Power seat switch connector	Terminal
   B204	12	B213	12	Yes
   	27		27

3. Check continuity between driver seat control unit connector and ground.
   Fig 3: Checking Continuity Between Driver Seat Control Unit Connector And Ground

   
   CONTINUITY SPECIFICATION
   
   

   A		Ground	Continuity
   Driver seat control unit connector	Terminal
   B204	12		No
   	27

OK or NG 

OK: GO TO 3.

NG: Repair or replace harness.

Check continuity between power seat switch as follows.

Fig 4: Checking Continuity Between Power Seat Switch

OK or NG 

OK: Replace driver seat control unit.

NG: Replace power seat switch.