Diagnostic Test

CHECK FOR OTHER DTCS IN THE INSTRUMENT PANEL CLUSTER (IPC)
1. With the scan tool, read DTCs in the Instrument Panel Cluster (IPC) and record on the repair order.
  Is the DTC U1801-08 - LIN IPC INSTRUMENT PANEL CLUSTER-BUS SIGNAL-MESSAGE FAILURE also set in the IPC?
  
  Yes
  - Perform the diagnostic procedure for DTC U1801-08.
  No
  - Go To 2
CHECK THE INSTRUMENT PANEL CLUSTER FOR ACTIVE DTCS
1. With the scan tool, clear DTCs in the IPC.
2. Turn the ignition off for 10 seconds, then start the engine.
3. With the scan tool, read DTCs in the IPC
  Did the DTC reset?
  
  Yes
  - Go To 3
  No
  - Perform the TESTING FOR AN INTERMITTENT CONDITION. Refer to TESTING FOR AN INTERMITTENT CONDITION .
CHECK RELATED WIRING AND HARNESS CONNECTIONS
1. Turn the ignition off.
2. Disconnect all Compass Module harness connectors.
3. Disconnect all Instrument Panel Cluster (IPC) harness connectors.
4. Check the power supply and ground circuits for each module.
5. Disconnect all related in-line harness connections (if equipped).
6. Disconnect the related component harness connectors.
7. Inspect harness connectors, component connectors, and all male and female terminals for the following conditions:
  - Proper connector installation.
  - Damaged connector locks.
  - Corrosion.
  - Other signs of water intrusion.
  - Weather seal damage (if equipped).
  - Bent terminals.
  - Overheating due to a poor connection (terminal may be discolored due to excessive current draw).
  - Terminals that have been pushed back into the connector cavity.
  - Perform a terminal drag test on each connector terminal to verify proper terminal tension.
  Repair any conditions that are found.
8. Reconnect all harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
9. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
10. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
11. With the scan tool, clear DTCs in the IPC.
12. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
13. With the scan tool, read DTCs.
  Did the DTC reset?
  
  Yes
  - Replace the Compass Module in accordance with the Service Information and retest. If the DTC resets, replace the Instrument Panel Cluster (IPC) in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  - Test complete.