A/C Blend Door Input Shorted to Battery

Test 1 - 2:

SYMPTOM
A/C BLEND DOOR INPUT SHORTED TO BATTERY

WHEN MONITORED
With the engine running.

SET CONDITION
The BCM reads the signal from the A/C - Heater Control blend request and positions the blend door accordingly. If the voltage on this pin exceeds 90% of ignition voltage, the DTC will set, and the BCM will place the blend door in a default position.

POSSIBLE CAUSES
- Control head - Temperature select signal shorted to voltage
- Temperature select signal circuit shorted to voltage
- Body control module - Temperature select signal shorted to voltage