A/C Control Blend Door Input Open/Shorted (MTC)

Tests 1 - 2:

Tests 3 - 5:

SYMPTOM
A/C CONTROL BLEND DOOR INPUT OPEN OR SHORTED TO GROUND (MANUAL A/C)

WHEN MONITORED
With the ignition ON.

SET CONDITION
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 shorted to ground
- Temperature select CKT shorted to sensor ground
- Temperature select circuit open
- Control head - temp select open/short
- Body control module - temp select open/short