B10C2

B10C2 - REAR DEFROST SWITCH STUCK - (CCN)

For a complete wiring diagram refer to the Wiring Information Electrical Diagrams.

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.





1. INSPECT THE A/C HEATER CONTROL FOR DAMAGE
1. Inspect the A/C Heater Control for damage.

Is the A/C Heater Control damaged?

Yes

- Replace the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test.

No

- Go To 2

2. INSPECT FOR OBJECT OR SUBSTANCE CAUSING THE EBL MODE SWITCH TO STAY OR STICK IN A PUSHED POSITION
1. Inspect the A/C Heater Control for anything that would cause 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

- Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Go To 3

3. CHECK FOR NORMAL EBL MODE SWITCH AND STATUS INDICATOR FUNCTION
1. Turn the ignition on.
2. Press the EBL mode switch on and off several times while observing the EBL status indicator.

Does the EBL status indicator turn on and off?

Yes

- Go To 4

No

- Replace the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

4. VERIFY THAT DTC B10C2 - REAR DEFROST SWITCH STUCK IS STILL ACTIVE
1. With the scan tool, erase DTCs.
2. Turn the ignition off, wait 10 seconds, and then turn the ignition on. Wait 1 minute before proceeding.
3. With the scan tool, read DTCs.

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

Yes

- Replace the A/C Heater Control.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test

No

- Test complete.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test