B17FF-11

B17FF-11-AMBIENT CABIN LIGHT DIMMER SWITCH - CIRCUIT SHORT TO GROUND





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on.

- Set Condition:
The Body Control Module (BCM) detects that the (E3) Ambient Lamps Dimmer Signal is less than expected for more than one second.





1. CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE OPERATION OF DIMMER SWITCH
1. Turn the ignition off.
2. Disconnect the Dimmer Switch harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.

Does the scan tool display DTC: B17FF-15-AMBIENT CABIN LIGHT DIMMER SWITCH - CIRCUIT SHORT TO BATTERY OR OPEN as active?

Yes

- Replace the Dimmer Switch. Dimmer Switch - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (E3) AMBIENT LAMPS DIMMER SIGNAL CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the BCM G harness connector.
3. Measure the resistance between ground and the (E3) Ambient Lamps Dimmer Signal circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the short to ground in the (E3) Ambient Lamps Dimmer Signal circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace the BCM. Body Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.