B2805

B2805-HID HEADLAMP CONTROL CIRCUIT LOW





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

- When Monitored:
With the HID Headlamps active.

- Set Condition:
When the Front Control Module (FCM) detects a short to ground in the (L44) Right Low Beam Control Circuit for more than two seconds.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, erase all FCM DTCs.
3. Turn the HID Headlamps on.
4. With the scan tool, read the DTCs.

Does the scan tool display DTC B2805-HID HEADLAMP CONTROL CIRCUIT LOW?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE HID HEADLAMPS RELAY
1. Turn the ignition off.
2. Substitute the HID Headlamps Relay with a known good relay.
3. Turn the ignition on.
4. Turn the HID Headlamps on.

Do the HID Headlamps operate correctly?

Yes

- Replace the HID Headlamps Relay.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. CHECK THE (L44) RIGHT LOW BEAM CONTROL CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Disconnect the FCM C2 harness connector.
3. Remove the HID Headlamps Relay.
4. Measure the resistance between ground and the (L44) Right Low Beam Control circuit at the HID Headlamps Relay.

Is the resistance above 10K Ohms?

Yes

- Replace the FCM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the short to ground in the (L44) Right Low Beam Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.