U1008

U1008-LIN 1 BUS





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

- When Monitored:
With the ignition on.

- Set Condition:
LIN 1 Bus Performance.





1. CHECK FOR AN ACTIVE DTC

NOTE: Before proceeding with this diagnostic procedure, verify the Left and Right Multifunction Switch and Clockspring harness connectors are properly seated and verify proper pin terminal tension. A loose connection at any of these connectors may cause this DTC to set.

1. Turn the ignition on.
2. With the scan tool, read DTCs.

Does the scan tool display: U1008-LIN 1 BUS?

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.

2. SHORTED LIN BUS COMPONENT

NOTE: After disconnecting each component, check DTCs with the scan tool.

1. Turn the ignition on.
2. Disconnect the Switch Bank Module harness connector.
3. Disconnect the Remote Compass Module harness connector.
4. Disconnect the Heated Seat Module harness connector.
5. Disconnect the Left Multifunction Switch C1 harness connector.

With each component disconnected, did the DTC U1008-LIN 1 BUS change from active to stored?

Yes

- Replace the component that caused the DTC U1008-LIN 1 BUS change from active to stored.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 3

3. (D506) LIN BUS CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the Cluster C3 harness connector.
3. Disconnect the Switch Bank harness connector.
4. Measure the resistance of the (D506) LIN Bus circuit.

Is the resistance above 10K Ohms?

Yes

- Repair the open in the (D506) LIN Bus circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. (D506) LIN BUS CIRCUIT SHORTED TO GROUND




1. Turn the ignition off.
2. Measure the resistance to ground on the (D506) LIN Bus circuit.

Is the resistance below 10K Ohms?

Yes

- Repair the short to ground (D506) LIN Bus circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

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