B168E

B168E-FRONT FOG LAMP SWITCH CIRCUIT



Theory of Operation

The Front Fog Lamp Switch is integral to the Left Multifunction Switch. Switch status is broadcast from the Left Multifunction Switch to the Cluster via the LIN Bus.

- When Monitored:
With the ignition on.

- Set Condition:
When the Cluster detects a faulty Fog Lamp Switch message on the LIN Bus.





CHECK FOR AN ACTIVE DTC

NOTE: Before proceeding with this diagnostic procedure, verify the Left Multifunction Switch harness connector is properly seated and verify proper pin terminal tension. A loose connection at this connector may cause this DTC to set.

1. Turn the ignition on.
2. Turn the Headlamps on.
3. Turn the Fog Lamps on and off three times.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Replace the Left Multifunction Switch in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Verification Tests

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.