B10C2 – REAR DEFROST SWITCH STUCK – (CCN)

For a complete wiring diagram Refer to Section 8W.

Theory of Operation


The switch input changes when the switch is pushed down. A stored DTC B10C2 indicates that the Electronic Back Light (EBL) mode switch was stuck in a pushed position for more than 10 seconds, but has since returned to its normal state. An active DTC B10C2 indicates that the EBL mode switch is stuck in a pushed position. An active DTC B10C2 will prevent proper EBL mode switch and status indicator function.


  • When Monitored:

    With the ignition on.

  • Set Condition:

    If the EBL mode switch stays in a pushed position for more than 10 seconds.


Possible Causes
  
OBJECT HOLDING ELECTRONIC BACK LIGHT (EBL) MODE SWITCH IN A PUSHED POSITION
  
SUBSTANCE CAUSING EBL MODE SWITCH TO GET STUCK IN A PUSHED POSITION
  
A/C HEATER CONTROL
  



Diagnostic Test

1.INSPECT THE A/C HEATER CONTROL FOR DAMAGE



Is the A/C Heater Control damaged?

Yes


No
  • Go To 2

2.INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE EBL MODE SWITCH TO STAY OR STICK IN A PUSHED POSITION



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

Yes


No
  • Go To 3

3.CHECK FOR NORMAL EBL MODE SWITCH AND STATUS INDICATOR FUNCTION




Does the EBL status indicator turn on and off?

Yes
  • Go To 4


No

4.VERIFY THAT DTC B10C2 – REAR DEFROST SWITCH STUCK IS STILL ACTIVE





Does the scan tool display active: B10C2 – REAR DEFROST SWITCH STUCK?

Yes


No