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Home >> Jeep >> 2022 >> Compass Red >> Repair and Diagnosis >> External Pages >> Different car >> Section 75 ((Display Screen Module (DSM) - Electrical Diagnostics)) >> DTC Troubleshooting >> B1429-00-Radio Display High Temperature >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2021 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ AND RECORD DTCS AND ENVIRONMENTAL DATA - ERASE DTCS AND CHECK FOR DTC TO RETURN 
    1. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
    2. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
    3. With the scan tool, erase all DTCs.
    4. Turn the ignition off for a minimum of 10.0 seconds.
    5. Turn the ignition on.
    6. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
    7. With the scan tool, read DTCs.

    Did the DTC return?

    Yes 

    • Go To  2

    No 

  2. VERIFY AMBIENT TEMPERATURE READING 
    1. With the scan tool, read ambient air temperature in the Powertrain Control Module (PCM).

      Is the ambient air temperature reading 85° C (185° F) or above?

      Yes 

      • Allow the temperature to decrease below 85° C (185° F) and retest.
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

      • Go To  3
  3. CHECK FOR DTCS IN THE RADIO 
    1. Refer to the saved DTC information recorded on the repair order.

      Were any DTCs set in the Radio?

      Yes 

      • Repair the Radio DTC(s) and retest. Refer to appropriate DTC information .

      No 

      • Go To  4
  4. CHECK RELATED HARNESS CONNECTIONS 
    1. Disconnect all DSM harness connectors.
    2. Disconnect all related in-line harness connections (if equipped).
    3. Disconnect the related component harness connectors.
    4. 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.

    5. Reconnect all DSM harness connectors. Be certain that all harness connectors are fully seated and the connector locks are fully engaged.
    6. Reconnect all in-line harness connectors (if equipped). Be certain that all connectors are fully seated and the connector locks are fully engaged.
    7. Reconnect all related component harness connectors. Be certain that all connectors are fully seated and the connector locks are fully engaged.
    8. With the scan tool, erase DTCs.
    9. Using the recorded Environmental Data, along with the When Monitored and Set Conditions above, operate the vehicle in the conditions that set the DTC.
    10. With the scan tool, read DSM DTCs.

      Did the DTC return?

      Yes 

      • Replace the Display Screen Module (DSM) in accordance with the Service information. (Refer to 08 - Electrical/8E - Electronic Control Modules/MODULE, Display Screen/Removal and Installation).
      • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

      No 

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