Operation CHARM: Car repair manuals for everyone.

Rear Blend Pot Circuit Open (Active)

Tests 1 - 2:




Tests 3 - 5:





SYMPTOM
REAR BLEND POT CIRCUIT OPEN (ACTIVE)

WHEN MONITORED
With the ignition ON.

SET CONDITION
This DTC Will set if the A/C-Heater Control Module sees voltage above 4.88 volts on the Rear Temperature Sensor Signal circuit.

POSSIBLE CAUSES
- 5 VOLT Supply CKT/rear temp sensor signal CKT shorted high
- Rear A/C-Heater control
- Rear temperature sensor signal circuit open
- Sensor return circuit open
- Rear A/C-Heater control
- A/C-Heater control module