Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG)
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Driver Seat / Active Test.
5. Perform the Active Test by following the directions on the Techstream screen.

   Driver Seat 

   ACTIVE TEST REFERENCE
   
   

   Tester Display	Test Part	Control Range	Diagnostic Note
   Seat Reclining	Seat reclining operation	FRONT/REAR	-
   Front Vertical Operation	Seat front vertical operation	UP/DOWN	-
   Lifter Operation	Seat lifer operation	UP/DOWN	-
   Seat Slide Operation	Seat sliding operation	FRONT/REAR	-

   OK: Each power seat motor operates. 

NG: Go to step 2 

OK: REPLACE FRONT POWER SEAT SWITCH LH (POSITION CONTROL ECU)  (See REMOVAL  )

1. Inspect the power seat motor (See OPERATION CHECK  )

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Power seat motor operates	A
   Power seat motor does not operate	B

B: REPLACE FRONT SEAT ASSEMBLY LH (POWER SEAT MOTOR)  (See REMOVAL  )

A: Go to next step 

1. Disconnect the front power seat switch LH (position control ECU) connector and power seat motor connectors.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   STANDARD RESISTANCE
   
   

   Tester Connection	Condition	Specified Condition
   U6-2 (SLD+) - U2-1	Always	Below 1 Ω
   U6-3 (SLD-) - U2-2	Always	Below 1 Ω
   U6-4 (FRV-) - U8-2	Always	Below 1 Ω
   U6-6 (FRV+) - U8-1	Always	Below 1 Ω
   U6-7 (LFT+) - U9-2	Always	Below 1 Ω
   U6-9 (LFT-) - U9-1	Always	Below 1 Ω
   U6-8 (RCL+) - U5-2	Always	Below 1 Ω
   U6-10 (RCL-) - U5-1	Always	Below 1 Ω
   U6-2 (SLD+) - Body ground	Always	10 kΩ or higher
   U6-3 (SLD-) - Body ground	Always	10 kΩ or higher
   U6-4 (FRV-) - Body ground	Always	10 kΩ or higher
   U6-6 (FRV+) - Body ground	Always	10 kΩ or higher
   U6-7 (LFT+) - Body ground	Always	10 kΩ or higher
   U6-9 (LFT-) - Body ground	Always	10 kΩ or higher
   U6-8 (RCL+) - Body ground	Always	10 kΩ or higher
   U6-10 (RCL-) - Body ground	Always	10 kΩ or higher

   Fig 1: Identifying Front Power Seat Switch LH (Position Control ECU) Connector And Power Seat Motor Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE FRONT POWER SEAT SWITCH LH (POSITION CONTROL ECU)  (See REMOVAL  )