ON-VEHICLE INSPECTION
1.

Remove the glove box assembly.

2.

Turn the blower and A/C switches ON.

3.

Start the engine.

4.
* Thermostatic switch operating characteristics

Operating temp

Thermostatic switch operation

Terminal voltage (2 and 3)

Remarks

1.5±1.0°C

(34.7±1.8°F)

OFF

0V

Compressor clutch should be disengaged

4.3±1.0°C

(39.7±1.8°F)

ON

12V

Compressor clutch should be engaged

1.

When the resistance (the temperature of the evaporator) in the thermistor increases:

→ TR1"ON"→TR2"ON"→Thermostatic switch "ON"

2.

When the resistance (the temperature of the evaporator) in the thermistor decreases:

→TR1"OFF"→TR2"OFF"→Thermostatic switch"OFF"

note

This check should be carried out on the back probes of the thermostatic switch when it is in coupled state.

If above condition is not satisfied, remove the evaporator unit and replace the thermostatic switch.

Яндекс.Метрика