Diagnostic Test

WARNING: This page is about a different car, the 2012 RAM Pickup and 2012 RAM Cab & Chassis. 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, read DTCs.
  Does the scan tool display this DTC as active?
  
  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.
SHORTED COMPONENT
NOTE:
After disconnecting each component, check DTCs with the scan tool.
1. Turn the ignition on.
2. Disconnect the Upper Switch Bank harness connector.
3. Disconnect the Lower Switch Bank harness connector.
4. Disconnect the Compass Module harness connector.
5. Disconnect the Multifunction Switch harness connector.
6. Disconnect the Right Steering Wheel Switch (Speed Control Switch) 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 BODY VERIFICATION TEST .
  No
  - Go To 3.
(D506) LIN BUS CIRCUIT FOR AN OPEN

Fig 1: Checking Lin Bus Circuit For An Open
Courtesy of CHRYSLER GROUP, LLC
1. Turn the ignition off.
2. Disconnect the Cluster C3 harness connector.
3. Disconnect the Upper 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 BODY VERIFICATION TEST .
  No
  - Go To 4.
(D506) LIN BUS CIRCUIT FOR A SHORT TO GROUND

Fig 2: Checking Lin Bus Circuit For A Short To Ground
Courtesy 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 BODY VERIFICATION TEST .
  No
  - Replace the Cluster in accordance with the Service Information. Refer to REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .