B10C1

B10C1-A/C SELECT SWITCH STUCK (CCN)

WHEN MONITORED
With the ignition on.

SET CONDITION
If the Instrument Cluster (CCN) detects that the A/C mode switch stays in a pushed position for more than 5 seconds.

POSSIBLE CAUSES
- DTC B1001 or B1002 active in the CCN
- Object holding A/C mode switch in a pushed position
- Substance causing A/C mode switch to get stuck in a pushed position
- A/C heater control

Diagnostic Test

1. CHECK FOR ACTIVE DTC B1001 OR B1002 IN THE CCN

Turn the ignition on.
With the scan tool, read CCN DTCs.

Q: Does the scan tool display active: B1001 or B1002?

YES: Diagnose and repair the DTC.
NO: Go To 2

2. INSPECT THE A/C HEATER CONTROL FOR DAMAGE

Turn the ignition off.
Inspect the A/C Heater Control for damage.

Q: Is the A/C Heater Control damaged?

YES: Replace the A/C Heater Control. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE A/C MODE SWITCH TO STAY OR STICK IN A PUSHED POSITION

Inspect the A/C Heater Control for anything that would cause the A/C mode switch to stay or stick in a pushed position.

Q: Is anything present that would cause the A/C mode switch to stay or stick in a pushed position?

YES: Repair as necessary. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 4

4. CHECK THE A/C MODE SWITCH & STATUS INDICATOR FUNCTION

Start the engine.
Turn the blower control on.
Press the A/C mode switch on and off several times while observing the A/C status indicator.

Q: Does the A/C status indicator turn on and off?

YES: Go To 5
NO: Replace the A/C Heater Control. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test

5. VERIFY THAT DTC B10C1-A/C SELECT SWITCH STUCK IS STILL ACTIVE

Turn the ignition on.
With the scan tool, erase CCN DTCs.
Turn the ignition off, wait 10 seconds, and turn the ignition on.
With the scan tool, read CCN DTCs.

Q: Does the scan tool display active: B10C1-A/C SELECT SWITCH STUCK?

YES: Replace the A/C Heater Control. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test