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Home >> Jeep >> 2024 >> Grand Cherokee Summit >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Audio (Radio) - DTCS U0422-00 To U3033-00 >> DTC Troubleshooting >> U3033-00-Control Module Security Certificate Missing/Invalid >> Diagnostic Test

Diagnostic Test

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. NOTE: The Radio must be on and a front door must remain open whenever checking or erasing Radio DTCs. 
  3. With the scan tool, run a vehicle Scan Report, or record the Environmental Data related to the DTCs.
  4. With the scan tool, perform an ECU reset to the Radio and AMP (if equipped), and then erase DTCs.
  5. Turn the ignition off for a minimum of 10.0 seconds.
  6. Turn the ignition on.
  7. Using the recorded Environmental Data and the When Monitored Conditions above, operate the vehicle in the conditions that set the DTC.
  8. With the scan tool, read DTCs.
    NOTE:

    The Radio must be on and a front door must remain open whenever checking or erasing Radio DTCs.

    Did the DTC return?

    Yes 

    • With the scan tool, program the Radio.
    • Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .

    No