U1008-LIN 1 BUS

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

Possible Causes
(D506) LIN BUS CIRCUIT OPEN
(D506) LIN BUS CIRCUIT SHORTED TO GROUND
SHORTED LIN BUS COMPONENT
CLUSTER

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

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 Compass Module harness connector.

3.	Disconnect the Upper and Lower Switch Bank harness connector.

4.	Disconnect the Left Multifunction Switch harness connector.

5.	Disconnect the Clockspring C2 harness connector.

6.	Disconnect the Heated Seats Module 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 to change from active to stored.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).

3. (D506) LIN BUS CIRCUIT OPEN

1.	Turn the ignition off.

2.	Disconnect the Cluster C2 harness connector.

3.	Measure the resistance of the (D506) LIN Bus circuit between the Cluster C2 and Lower Switch Bank harness connectors.

Is the resistance above 5.0 Ohms?

Yes

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

Replace the Cluster in accordance with the Service Information.
Perform the BODY VERIFICATION TEST. (Refer to 28 - DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure).