For a complete wiring diagram Refer to Section 8W.When Monitored:With the ignition on.Set Condition:LIN 1 Bus Performance.Possible Causes(D506) LIN BUS CIRCUIT OPEN(D506) LIN BUS CIRCUIT SHORT TO GROUNDCLUSTER1. CHECK FOR AN ACTIVE DTCTurn the ignition on.With the scan tool, record and erase DTCs.Wait 30 seconds.With the scan tool, read DTCs.Does the scan tool display: U1008–LIN 1 BUS?YesGo To 2 NoThe 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 BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) 2. SHORTED COMPONENT

After disconnecting each component, check DTCs with the scan tool.Turn the ignition on.Disconnect the Compass Module harness connector.Disconnect the Switch Bank harness connector.Disconnect the Steering Control Module C1 harness connector.With each component disconnected, did the DTC U1008–LIN 1 BUS change from active to stored?YesReplace the component that caused the DTC U1008–LIN 1 BUS to change from active to stored.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoGo To33. (D506) LIN BUS CIRCUIT OPEN

Turn the ignition off.Disconnect the Cluster C2 harness connector.Disconnect the Multifunction Switch harness connector.Measure the resistance of the (D506) LIN Bus circuit.Is the resistance above 10K ohms?YesRepair the (D506) LIN Bus circuit for an open. Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoGo To44. (D506) LIN BUS CIRCUIT SHORT TO GROUND

Turn the ignition off.Measure the resistance to ground on the (D506) LIN Bus circuit.Is the resistance below 10K ohms?YesRepair the (D506) LIN Bus circuit for a short to ground.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE) NoReplace the Cluster in accordance with the service information.Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)