Diagnostic Test

WARNING: This page is about a different car, the 2009 Dodge Caliber. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Wait 30 seconds.
4. With the scan tool, read DTCs.
  Does the scan tool display: U1008-LIN 1 BUS?
  
  Yes
  - Go to step 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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
SHORTED COMPONENT

Fig 1: Checking For Shorted Circuit
Courtesy of CHRYSLER LLC

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 Steering Control Module 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. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
  No
  - Go To step 3
(D506) LIN BUS CIRCUIT OPEN

Fig 2: Checking LIN BUS Circuit
Courtesy of CHRYSLER 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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
  No
  - Go To step 4
(D506) LIN BUS CIRCUIT SHORT TO GROUND

Fig 3: Checking LIN BUS Circuit
Courtesy of CHRYSLER 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 DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure
  No
  - Replace the Cluster in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure