A/C Blend DR Input Open/Shorted to Ground

Test 1 - 2:

Test 3 - 5:

Test 6:

SYMPTOM
A/C BLEND DR INPUT OPEN/SHORT TO GROUND

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 is below 0.1 volts, the DTC will set, and the BCM will place the blend door in a default position.

POSSIBLE CAUSES
- Additional code(s) present
- Fused ignition switch output circuit open
- Temperature select signal circuit shorted to ground
- Temperature select signal circuit shorted to sensor ground
- Temperature select signal circuit open
- Control head - Temperature select signal open/shorted to ground
- Body control module - Temperature select signal open/shorted to ground