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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 472 ((Cabin Compartment Node (CCN) - Electrical Diagnostics)) >> DTC Troubleshooting >> U1008-Lin 1 Bus >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 Dodge Avenger and 2013 Chrysler 200. However, it is still accessible from the selected car via links, so may be relevant.
  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 

      • Go To  2

      No 

      • The 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 the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  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 harness connector.
    3. Disconnect the Remote Compass Module harness connector.
    4. Disconnect the Heated Seat Module harness connector.
    5. Disconnect the Left Multifunction Switch harness connector.
    6. Disconnect the Clockspring C2 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.
        NOTE:

        If disconnecting the Clockspring C2 harness connector is identified as the component that is causing this DTC to set, further isolate the circuit components such as the right steering wheel switch.

      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  3
  3. (D506) LIN BUS CIRCUIT OPEN 
    Fig 1: Checking LIN Bus Circuit For An Open
    GC0124251Courtesy of CHRYSLER GROUP, LLC
    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 (D506) LIN Bus circuit for an open.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. (D506) LIN BUS CIRCUIT SHORTED TO GROUND 
    Fig 2: Checking LIN BUS Circuit For Short To Ground
    GC0100465Courtesy of CHRYSLER GROUP, LLC
    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 (D506) LIN Bus circuit for a short to ground.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Replace the Cluster in accordance with the Service Information.
      • Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .