Blend Calibration Fault

Tests 1 - 4:

Test 5:

SYMPTOM
BLEND CALIBRATION FAULT

WHEN MONITORED
When the HVAC Door Recalibration is executed.

SET CONDITION
If the Blend Door (Pass [Zone]) drive span found is outside the tolerance. If the Blend Door Actuator (Pass [Zone])/circuit is open. If the Blend Door(s) (Driver, Pass[Zone], Rear), Mode Door(s) (Front, Rear), Recirculation Door Actuator(s)/circuit(s) are shorted low. (This will also set Blend Calibration/Overcurrent (Front, Rear), Mode Calibration/Overcurrent (Front, Rear), Recirculation Calibration/Overcurrent, Zone Calibration/Overcurrent DTCs.)

POSSIBLE CAUSES
- Check for additional HVAC DTCS
- Door actuator driver circuit open
- Common door driver circuit open
- Door actuator
- Door actuator/linkage/door
- A/C - heater control module