Component Inspection

Air Conditioner

Air Conditioner - B1258 AQS Sensor Short - Component Inspection

Component Inspection

Check Ambient sensor
1. Engine "ON".
2. Connect AQS sensor.
3. Measure voltage value between terminal "4" and "5" of AQS sensor.

Specification : Refer the specifications in fig 3)




Fig.3)





Fig 3) Specifications : Voltage value of AQS sensor as a function of position of operating condition.
4. Is the measured voltage within specifications in fig 3)?





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

Specification : Approx. 5 V




4. Is the measured voltage within specifications?