Toyota Tundra. Manual — part 617

Fig. 22: Inspecting Front Seat Adjuster Assembly RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: Go to step 17

OK: REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT POWER SEAT SWITCH
RH-BATTERY AND BODY GROUND)

17. CHECK HARNESS AND CONNECTOR (FRONT POWER SEAT SWITCH RH - POSITION

MOTOR)

a. Disconnect the Y9 switch connector.

b. Disconnect the Y12 and Y13 motor connectors.

c. Measure the resistance according to the value(s) in the table below.

Standard resistance

Battery negative (-) --> Terminal 2 (SLD+)

Battery positive (+) --> Terminal 3 (SLD-)

Seat slides rearward (B)

Battery positive (+) --> Terminal 8 (RCL+)

Battery negative (-) --> Terminal 10 (RCL-)

Seat tilts forward (C)

Battery negative (-) --> Terminal 8 (RCL+)

Battery positive (+) --> Terminal 10 (RCL-)

Seat reclines (D)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra

FRONT POWER SEAT SWITCH RH - POSITION MOTOR

Fig. 23: Identifying Front Power Seat Switch And Position Motor Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE FRONT SEAT ADJUSTER ASSEMBLY RH (see REMOVAL )

Tester Connection

Condition Specified Condition

Y9-2 (SLD+) - Y12-1

Always

Below 1 ohms

Y9-3 (SLD-) - Y12-2

Y9-8 (RCL+) - Y13-2

Y9-10 (RCL-) - Y13-1

Y9-2 (SLD+) - Body ground

Always

10 kohms or higher

Y9-3 (SLD-) - Body ground

Y9-8 (RCL+) - Body ground

Y9-10 (RCL-) - Body ground

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra

18. INSPECT FUSE (FR P/SEAT RH)

a. Remove the FR P/SEAT RH fuse from the main body ECU.

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

FUSE (FR P/SEAT RH)

NG: REPLACE FUSE

OK: Go to next step

19. INSPECT FRONT POWER SEAT LUMBAR SWITCH

a. Remove the switch (see REMOVAL ).

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

FRONT POWER SEAT LUMBAR SWITCH

Tester Connection Condition Specified Condition

FR P/SEAT RH fuse Always

Below 1 ohms

Tester Connection Switch Condition Specified Condition

3 (B) - 4 (H)

HOLD

Below 1 ohms

1 (R) - 2 (E2)
1 (R) - 2 (E2)

4 (H) - 5 (E)

OFF

1 (R) - 3 (B)

RELEASE

4 (H) - 5 (E)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra

Fig. 24: Identifying Front Power Seat Lumbar Switch Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NG: REPLACE FRONT POWER SEAT LUMBAR SWITCH (see REMOVAL )

OK: Go to next step

20. INSPECT FRONT SEAT ADJUSTER ASSEMBLY RH

a. Disconnect the Y10 switch connector.

b. Apply battery voltage and check the operation of the power seat.

OK

FRONT SEAT ADJUSTER ASSEMBLY RH

Measurement Condition

Specified Condition

Battery positive (+) --> Terminal Y10-4 (H)

Battery negative (-) --> Terminal Y10-1 (R)

Lumbar support moves forward (A)

Battery negative (-) --> Terminal Y10-4 (H)
Battery positive (+) --> Terminal Y10-1 (R)

Lumbar support moves rearward (B)

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra