Standard Procedure - Pcm/ECM/SKREEM Programming: Notes

2006 Jeep Commander Base, 3.7 K, AWDSECTION Notes
NOTE: Before replacing the Powertrain Control Module (PCM) or Engine Control Module (ECM), be certain to check the related component/circuit integrity for failures not detected due to a double fault in the circuit. Most PCM/ECM driver/control circuit failures are caused by internal component failures (such as relays and solenoids) and shorted circuits (such as pull-ups, drivers, and switched circuits). These failures are difficult to detect when a double fault has occurred and only one DTC has been set.

When a PCM, or ECM, and the Sentry Key Remote Entry Module (SKREEM) on vehicles equipped with the Sentry Key Immobilizer System (SKIS) are replaced at the same time, perform the following steps in order:

  1. Program the new PCM or ECM.
  2. Program the new SKREEM (also known as the Wireless Control Module/WCM).
  3. Replace all ignition keys and program them into the new SKREEM/WCM.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.