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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 151 (2.4L - DTCS P0443 To P1618) >> DTC Troubleshooting >> P0601-Internal Memory Checksum Invalid >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2016 Dodge Journey and 2015 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC IS ACTIVE 
    NOTE:

    If any other DTCs are set, they must be diagnosed and repaired before continuing this test.

    WARNING:

    When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

    1. Ignition on, engine not running.
    2. With the scan tool, clear DTCs in the Powertrain Control Module (PCM).
    3. Monitor the scan tool for at least two minutes.
    4. Cycle the ignition key off and on several times, leaving the ignition on for at least 10 seconds at a time.
    5. Start the engine and allow it to reach operating temperature.
    6. With the scan tool, select View DTCs.

      Is the status Active for this DTC?

      Yes 

      • Go to  2

      No 

  2. POWERTRAIN CONTROL MODULE (PCM) 
    1. Using the wiring diagram/schematic as a guide, inspect the Powertrain Control Module (PCM) wiring and connectors.
    2. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Look for broken, bent, pushed out or corroded terminals.
    4. Perform any Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

      • Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST . .