| Last Modified: 11-29-2007 | 1.6 G | |
| Service Category: Vehicle Interior | Section: Seat | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000002XF0009X |
| Title: SEAT: SEAT HEATER SWITCH (for Front Seat): INSPECTION (2008 Sequoia) | ||
INSPECTION
1. INSPECT SEAT HEATER SWITCH LH
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
3 (SW) - 7 (RV) |
Switch OFF |
2.7 to 4.1 kΩ |
|
Switch ON (Min.) |
||
|
Switch ON (Max.) |
0.28 to 0.42 kΩ |
HINT:
As the dial is being turned, the resistance changes gradually.
If the result is not as specified, replace the switch.
(b) Check the illumination operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 8 (ILL+) Battery negative (-) → 2 (ILL-) |
Always |
Pointer and level illuminate |
If the result is not as specified, replace the switch.
(c) Check the indicator operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 9 (IG) Battery negative (-) → 4 (E) |
Switch ON |
Indicator illuminates |
If the result is not as specified, replace the switch.
2. INSPECT SEAT HEATER SWITCH RH
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
2 (SW) - 5 (RV) |
Switch OFF |
2.7 to 4.1 kΩ |
|
Switch ON (Min.) |
||
|
Switch ON (Max.) |
0.28 to 0.42 kΩ |
HINT:
As the dial is being turned, the resistance changes gradually.
If the result is not as specified, replace the switch.
(b) Check the illumination operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 6 (ILL+) Battery negative (-) → 1 (ILL-) |
Always |
Pointer and level illuminate |
If the result is not as specified, replace the switch.
(c) Check the indicator operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 7 (IG) Battery negative (-) → 3 (E) |
Switch ON |
Indicator illuminates |
If the result is not as specified, replace the switch.
3. INSPECT SEAT HEATER AND CLIMATE SWITCH LH (w/ Climate Control Seat System)
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance (for Heater):
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
2 (SW) - 6 (RV) |
Switch OFF |
2.2 to 4.0 kΩ |
|
Switch ON (Min.) |
||
|
Switch ON (Max.) |
0.3 to 0.5 kΩ |
Standard Resistance (for Blower):
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
5 (RLLH) - 4 (SW-) |
Switch OFF |
1.54 to 2.86 kΩ |
|
Switch ON (Min.) |
||
|
Switch ON (Max.) |
Below 0.1 kΩ |
HINT:
As the dial is being turned, the resistance changes gradually.
If the result is not as specified, replace the switch.
(b) Check the illumination operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 7 (ILL+) Battery negative (-) → 1 (ILL-) |
Always |
Pointer and level illuminate |
If the result is not as specified, replace the switch.
(c) Check the indicator operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 8 (IG) Battery negative (-) → 3 (E) |
Switch ON |
Indicator illuminates |
If the result is not as specified, replace the switch.
4. INSPECT SEAT HEATER AND CLIMATE SWITCH RH (w/ Climate Control Seat System)
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the table below.
Standard Resistance (for Heater):
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
4 (SW) - 10 (RV) |
Switch OFF |
2.2 to 4.0 kΩ |
|
Switch ON (Min.) |
||
|
Switch ON (Max.) |
0.3 to 0.5 kΩ |
Standard Resistance (for Blower):
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
7 (BLRH) - 6 (SVSG) |
Switch OFF |
1.54 to 2.86 kΩ |
|
Switch ON (Min.) |
||
|
Switch ON (Max.) |
Below 0.1 kΩ |
HINT:
As the dial is being turned, the resistance changes gradually.
If the result is not as specified, replace the switch.
(b) Check the illumination operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 11 (ILL+) Battery negative (-) → 5 (ILL-) |
Always |
Pointer and level illuminate |
If the result is not as specified, replace the switch.
(c) Check the indicator operation.
(1) Apply battery voltage to the switch connector, and check that the seat heater switch illuminates.
OK:
|
Measurement Condition |
Switch Condition |
Specified Condition |
|---|---|---|
|
Battery positive (+) → 12 (IG) Battery negative (-) → 3 (E) |
Switch ON |
Indicator illuminates |
If the result is not as specified, replace the switch.
|
|