Toyota Tundra. Manual — part 691

Fig. 572: Identifying Seat Heater Switch Claws
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

12. REMOVE SEAT HEATER SWITCH RH

a. Detach the 2 claws and remove the seat heater switch.

Fig. 573: Identifying Seat Heater Switch Claws
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1. INSPECT SEAT HEATER SWITCH LH

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

Standard resistance

SEAT HEATER SWITCH LH RESISTANCE SPECIFICATION

HINT:

As the dial is being turned, the resistance changes gradually.

If the result is not as specified, replace the switch.

Tester Connection Switch Condition Specified Condition

3 (SW) - 7 (RV)

Switch OFF

2.7 to 4.1 kohms

Switch ON (Min.)

Switch ON (Max.) 0.28 to 0.42 kohms

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra

b. Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.

OK

SEAT HEATER SWITCH LH VOLTAGE

If the result is not as specified, replace the switch.

Fig. 574: Inspecting Seat Heater Switch LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. INSPECT SEAT HEATER SWITCH RH

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

Measurement Condition

Specified Condition

Battery positive (+) --> 8 (ILL+)

Battery negative (-) --> 2 (ILL-)

Illuminates

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra

Standard resistance

SEAT HEATER SWITCH RH RESISTANCE SPECIFICATION

HINT:

As the dial is being turned, the resistance changes gradually.

If the result is not as specified, replace the switch.

b. Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.

OK

SEAT HEATER SWITCH RH VOLTAGE

If the result is not as specified, replace the switch.

Tester Connection Switch Condition Specified Condition

2 (SW) - 5 (RV)

Switch OFF

2.7 to 4.1 kohms

Switch ON (Min.)

Switch ON (Max.) 0.28 to 0.42 kohms

Measurement Condition

Specified Condition

Battery positive (+) --> 6 (ILL+)

Battery negative (-) --> 1 (ILL-)

Illuminates

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra

Fig. 575: Inspecting Seat Heater Switch RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSTALLATION

1. INSTALL SEAT HEATER SWITCH RH

a. Attach the 2 claws to install the seat heater switch.

2009 Toyota Tundra

2009 ACCESSORIES AND EQUIPMENT Seat - Tundra