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Home >> Jeep >> 2021 >> Compass Trailhawk >> Repair and Diagnosis >> Engine Performance >> System >> 2.4L - DTCS P1048 To P1D68 >> DTC Troubleshooting >> P1718-EEPROM Integrity Failure >> Diagnostic Test

Diagnostic Test

  1. CHECK FOR AN ACTIVE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs and record on the repair order.

      Is the DTC active or pending?

      Yes 

      • Go To  2

      No 

  2. CHECK FOR OTHER DTCS 
    1. Refer to the recorded DTCs.

      Are there any DTCs active or pending?

      Yes 

      • Perform the applicable diagnostic procedure(s). Refer to appropriate diagnostic information .

      No 

      • Go To  3
  3. CHECKING THE PCM POWER AND GROUND CIRCUITS 
    1. Perform the diagnostic procedure for CHECKING THE PCM POWER AND GROUND CIRCUITS. Refer to CHECKING THE PCM POWER AND GROUND CIRCUITS .

      Were any problems found?

      Yes 

      No 

      • Go To  4
  4. CHECK THE POWERTRAIN CONTROL MODULE SOFTWARE LEVEL 
    1. Turn the ignition on.
    2. Verify the PCM is at the latest calibration (flash level).
    3. If the PCM has later calibration available, program the PCM in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), MODULE PROGRAMMING .
    4. Cycle the ignition off and on.
    5. With a scan tool, read DTCs.

      Is there an update for the PCM?

      Yes 

      • Go To  5

      No 

  5. PROGRAM THE POWERTRAIN CONTROL MODULE AND CHECK FOR DTC TO RETURN 
    1. Update the PCM in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), MODULE PROGRAMMING .
    2. Cycle the ignition off and on.
    3. With a scan tool, read DTCs.

      Does this DTC return?

      Yes 

      No 

      • Test Complete.