A/C Control Blend Door Input Open/Shorted to Ground

Test 1 - 2:

Test 3 - 6:

SYMPTOM
A/C CONTROL BLEND DOOR INPUT OPEN OR SHORT TO GROUND

WHEN MONITORED
With ignition ON.

SET CONDITION
When the BCM detects an abnormally low voltage (below 1.0 volts) on its blend request input.

POSSIBLE CAUSES
- Fused ignition switch output circuit- open
- Temperature select CKT short to ground
- Temperature select signal CKT open
- Temperature select CKT short to sensor ground
- Control head - TEMP select open/short
- Body control module - TEMP select open/short