Powertrain Control Module

The Powertrain Control Module (PCM) reads the fuel enable circuit to determine if fuel injection should be allowed. If the fuel enable signal is not present, the PCM will not allow fuel injection. If the signal is present, the PCM will allow fuel injection and normal engine operation. The PCM has some diagnostic features associated with the PASSKey(R) fuel enable input. See 1992 ENGINE PERFORMANCE GENERAL MOTORS 3.8L "E" Body Self-Diagnostics - ECM/PCM article in ENGINE PERFORMANCE for details on PCM trouble codes.