Component Inspection

Component Inspection

Check Ambient sensor
1. Ignition "OFF".
2. Disconnect ambient sensor.
3. Measure resistance between terminal "1" and "2" of ambient sensor.

Specification : Refer the specifications in fig 3)









Fig 3) Specifications : Resistance value of ambient sensor as a function of temperature
4. Is the measured resistance within specifications in fig 3) ? (tolerance limits ± 3%)





Check A/C Control Unit
1. Engine : "ON".
2. Disconnect ambient sensor.
3. Measure voltage between terminal "3" of A/C Control Unit and chassis ground.

Specification : Approx. 5V





4. Is the measured voltage within specifications ?