RAM 2500 Van V6-239 3.9L Magnum (1995)
Malfunction Indicator Lamp: Description and Operation
The Powertrain Control Module (PCM) provides ground for the malfunction indicator lamp on circuit G3. Circuit G3 connects to cavity 32 of the PCM.
Circuit G5 connects to the instrument cluster and supplies battery voltage for the malfunction indicator lamp. The malfunction indicator lamp is also
referred to as the Check Engine lamp.
