Recirculation Calibration Fault

Test 1 - 3:

Test 4 - 5:

Test 6 - 7:

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SYMPTOM
RECIRCULATION CALIBRATION FAULT - MTC

TEST NOTE
This symptom is diagnosed using the test Blend Calibration Fault - MTC.

WHEN MONITORED
When the HVAC Door Recalibration is executed.

SET CONDITION
If the recirculation door's span is found outside the tolerance due to: open door actuator electrical circuits; a bad door actuator; broken door linkage; a bound up door; door actuator electrical circuits shorted to voltage; door actuator electrical circuits shorted to ground. A short to voltage or ground on the door actuator electrical circuits will also set door actuator overcurrent faults.

POSSIBLE CAUSES
- Check for actuator circuit test fault messages
- Check for active HVAC DTCs
- Mode linkage/door binding
- Passenger blend linkage/door binding
- Driver blend linkage/door binding
- Recirculation linkage/door binding
- Rear mode linkage/door binding
- Rear blend linkage/door binding
- A/C - heater control module
- Door actuator driver circuit open
- Common door driver circuit open
- Door actuator
- A/C - heater control module
- Rear door actuator driver circuit open
- Rear common door driver circuit open
- Door actuator
- Broken actuator/linkage/door