Pinpoint Test AD: Powertrain Control Module (PCM) Reset: Introduction: Description
The PCM reset occurs when the PCM momentarily reboots or is turned off and on while the engine is operating. If the condition occurs a single time, the engine momentarily stumbles and the PCM goes through a normal key on cycle, including turning the glow plug lamp and glow plugs on, and attempts to validate the accelerator pedal position. If the pedal is not at the idle position when this fault occurs, pedal authority is not allowed by the PCM until the accelerator pedal is released and the engine returns to idle.