Powertrain Control Module (PCM)

The PCM reads the fuel enable circuit to determine if the fuel injection should be allowed. If the fuel enable PWM signal is not present, the PCM does not allow fuel injection. If the correct PWM signal is present, the PCM allows fuel injection and normal engine operation.

The PCM has some diagnostic features associated with the PASS-Key (R) II fuel input, including diagnostic trouble codes. Refer to ENGINE CONTROLS for details. Computers and Control Systems