Evaporator Temperature Sensor Failure

Tests 1 - 2:

Tests 3 - 7:

Tests 8 - 12:

SYMPTOM
EVAPORATOR TEMPERATURE SENSOR FAILURE

WHEN MONITORED
With the ignition ON.

SET CONDITION
The BCM detects an abnormally high or low voltage on the evaporator temperature sensor signal.

POSSIBLE CAUSES
- Evaporator temperature sensor signal CKT short to voltage
- Evaporator temperature sensor open
- Evaporator temp sensor signal CKT open
- Sensor ground open
- Body control module - evaporator temp sensor stays high
- Evaporator temperature sensor - code returns
- Evaporator temperature sensor - code with A/C operating
- System is operational
- Evaporator temp sensor signal circuit short to ground
- Evaporator temp sensor signal CKT short to sensor ground
- Body control module - Evaporator temp sensor stays low