In-Car Temp Sensor Failure (ATC Aspirator Failure)

Test 1 - 3:

Test 4 - 7:

Test 8 - 11:

Test 12:

SYMPTOM
IN CAR TEMP SENSOR FAILURE (ATC ASPIRATOR FAILURE)

WHEN MONITORED
With the ignition on.

SET CONDITION
The BCM detects an abnormally high voltage (above 4.8 volts) or an abnormally low voltage (below 0.31 volts) on the in-car temperature sensor signal.

POSSIBLE CAUSES
- Fused B(+) circuit open
- Aspirator motor driver circuit shorted to battery
- Aspirator motor driver circuit open
- ATC head - open aspirator motor
- Body control module - aspirator driver open
- Aspirator motor driver circuit shorted to ground
- BCM-aspirator stays running
- In-car temperature sensor signal circuit shorted to battery
- In-car temperature sensor signal circuit shorted to ground
- In-car temperature sensor signal circuit shorted to sensor ground
- In-car temperature sensor signal circuit open
- Body control module - open in-car temp sensor signal
- ATC head-in-car sensor code
- System is operational at this time
- Sensor ground circuit open
- Body control module - open sensor ground