Diagnostic Procedure For Sensors

Diagnostic Procedure for Sensors

AMBIENT SENSOR

TROUBLE SYMPTOM:
- Fan speed is not switched when the fan speed control dial is in AUTO position.
- Failure related to the ambient sensor is indicated in self-diagnosis.

WIRING DIAGRAM

Wiring Diagram:

Step 1-3:

IN-VEHICLE SENSOR

TROUBLE SYMPTOM:
- Blower fan speed, outlet port and inlet port do not change after turning the AUTO switch ON
- Failure related to the in-vehicle sensor is indicated in self-diagnosis.

Wiring Diagram:

Step 1-6:

EVAPORATOR SENSOR

WIRING DIAGRAM

Wiring Diagram:

Step 1-6:

SUNLOAD SENSOR

TROUBLE SYMPTOM:
- Sensor identifies that sunlight is at maximum. Then, A/C system is controlled to COOL side.
- Sensor identifies that sunlight is at minimum. Then, A/C system is controlled to HOT side.

NOTE: When the sunload sensor is checked indoors or in the shade, an open circuit might be indicated. Always check the sunload sensor at a location exposed to direct sunlight.

WIRING DIAGRAM

Wiring Diagram:

Step 1-5: