LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Jeep >> 2007 >> Commander Overland, RWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P1602 To P2123 >> P1602-Pcm Not Programmed >> Diagnostic Test
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Test

  1. 1) PCM PROGRAMMED 

    Ignition on, engine not running.

    With a scan tool, erase DTCs.

    With a scan tool program the PCM.

    Start the engine.

    Allow the engine to reach normal operating temperature.

    With a scan tool, select View DTCs.

    Does the DTC reset? 

    Yes 

    1. Replace and program the Powertrain Control Module per Service Information.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. The PCM has been successfully programmed. Test is complete.
    2. Perform POWERTRAIN VERIFICATION TEST .