B1609-11

B1609-11-PANEL DIMMER INPUT - 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 Panel Dimmer Input signal is less than 0.5 of a volt 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: B1609-15-PANEL DIMMER INPUT - 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 (E2) PANEL 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 (E2) Panel Lamps Dimmer Signal circuit at the Dimmer Switch harness connector.

Is the resistance below 10K Ohms?

Yes

- Repair the short to ground in the (E2) Panel 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.