Evaporator Temperature Sensor Circuit Open (Active)

Test 1:

Test 2 - 3:

Test 4:

SYMPTOM
EVAPORATOR TEMPERATURE SENSOR CIRCUIT OPEN (ACTIVE) - MTC

WHEN MONITORED
With the ignition on.

SET CONDITION
This DTC will set if the A/C - Heater Control Module sees abnormally high voltage on the Evaporator Temperature Sensor Signal circuit.

POSSIBLE CAUSES
- Evaporator temperature sensor signal circuit shorted high
- A/C - heater control module
- Evaporator temperature sensor signal circuit open
- Sensor ground circuit open
- Evaporator temperature sensor