Inspection Procedure

HINT:

If there is not the hand-held tester, begin with STEP  2.

1. Check power seat control switch operation. 

   PREPARATION: 

   1. Connect the hand-held tester to the DLC3.
   2. Turn ignition switch ON and hand-held tester main switch ON.
   3. Select the ACTIVE TEST mode on the hand-held tester.

   CHECK: 

   Check that switch status (ON/OFF) changes on the screen of hand-held tester as the power seat control switch of the vehicle is turned.

   OK: 

   The switch status changes in the same way as the vehicle switch operation. 

   1. OK: Check and replace Power seat position ECU (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
   2. NG: Go to next step. 
2. Check power seat control switch. 

   PREPARATION: 

   1. Remove seat.
   2. Disconnect power seat control switch.
   Fig 1: Identifying Power Seat Control Switch Connector Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   CHECK: 

   Check continuity between terminals when switch operated.

   OK: 

   Driver's seat slide switch: 

   DRIVER'S SEAT SLIDE SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   FRONT	1 - 9	Continuity
   BACK	1 - 6	Continuity

   Driver's seat front vertical switch: 

   DRIVER'S SEAT FRONT VERTICAL SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   UP	1 - 5	Continuity
   DOWN	1 - 10	Continuity

   Driver's seat lifter switch: 

   DRIVER'S SEAT LIFTER SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   UP	1 - 8	Continuity
   DOWN	1 - 7	Continuity

   Driver's seat reclining switch: 

   DRIVER'S SEAT RECLINING SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   FORWARD	1 - 3	Continuity
   REAR	1 - 2	Continuity

   Passenger's slide switch: 

   PASSENGER'S SLIDE SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   FRONT	1 - 9	Continuity
   BACK	1 - 6	Continuity

   Passenger's front vertical switch: 

   PASSENGER'S FRONT VERTICAL SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   UP	1 - 10	Continuity
   DOWN	1 - 5	Continuity

   Passenger's lifter switch: 

   PASSENGER'S LIFTER SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   UP	1 - 7	Continuity
   DOWN	1 - 8	Continuity

   Passenger's reclining switch: 

   PASSENGER'S RECLINING SWITCH: CONDITION
   
   

   Switch position	Tester connection	Specified condition
   FORWARD	1 - 3	Continuity
   REAR	1 - 2	Continuity

   1. NG: Replace power seat control switch. 
   2. OK: Go to next step. 
3. Check harness and connectors between power seat position ECU and power seat control switch (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ). 
   1. NG: Repair and replace harness or connector. 
   2. OK: Check and replace power seat position ECU. (See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  ).