| Last Modified: 11-29-2007 | 1.6 G | |
| Service Category: Vehicle Interior | Section: Heating/Air Conditioning | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000000VTW01GX |
| Title: HEATING / AIR CONDITIONING: FRONT EVAPORATOR TEMPERATURE SENSOR: INSPECTION (2008 Sequoia) | ||
INSPECTION
1. INSPECT FRONT EVAPORATOR TEMPERATURE SENSOR (NO. 1 COOLER THERMISTOR)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - 2 |
-10°C (14°F) |
7.30 to 9.10 kΩ |
|
1 - 2 |
-5°C (23°F) |
5.65 to 6.95 kΩ |
|
1 - 2 |
0°C (32°F) |
4.40 to 5.35 kΩ |
|
1 - 2 |
5°C (41°F) |
3.40 to 4.15 kΩ |
|
1 - 2 |
10°C (50°F) |
2.70 to 3.25 kΩ |
|
1 - 2 |
15°C (59°F) |
2.14 to 2.58 kΩ |
|
1 - 2 |
20°C (68°F) |
1.71 to 2.05 kΩ |
|
1 - 2 |
25°C (77°F) |
1.38 to 1.64 kΩ |
|
1 - 2 |
30°C (86°F) |
1.11 to 1.32 kΩ |
NOTICE:
- Touching the sensor even slightly may change the resistance value. Hold the sensor connector.
- When measuring the resistance, the temperature of the sensor and the cooler thermistor must be the same.
HINT:
As the temperature increases, the resistance decreases (see the graph).
If the operation is not as specified, replace the evaporator temperature sensor.
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