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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 120 ((HVAC Systems - Electrical Diagnostics)) >> Electrical Diagnostics >> DTC Troubleshooting >> B10C1-A/C Select Switch Stuck (CCN) >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2006 Chrysler PT Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  CHECK FOR ACTIVE DTC B1001 OR B1002 IN THE CCN 

    Turn the ignition on.

    With the scan tool, read CCN DTCs.

    Does the scan tool display active: B1001 or B1002? 

    Yes 

    1. Diagnose and repair the DTC. Refer to DIAGNOSTIC CODE INDEX  .

    No 

    1. Go To  2).
  2. 2)  INSPECT THE A/C HEATER CONTROL FOR DAMAGE 

    Turn the ignition off.

    Inspect the A/C Heater Control for damage.

    Is the A/C Heater Control damaged? 

    Yes 

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go To  3).
  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.

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

    Yes 

    1. Repair as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Go To  4).
  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.

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

    Yes  

    1. Go To  5).

    No  

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
  5. 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.

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

    Yes 

    1. Replace the A/C Heater Control in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .

    No 

    1. Perform BODY VERIFICATION TEST - VER 1. Refer to BODY VERIFICATION TEST - VER 1 .
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