Powertrain Control Module

The 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 also determines if the engine is running and grounds the starter inhibit output to prevent cranking during run.

The PCM has some diagnostic features associated with the PASS-Key(R) fuel enable input, including trouble code P058, the "THEFT SYSTEM PROBLEM/CAR MAY NOT RESTART" message and the "STARTING DISABLED/DUE TO THEFT SYSTEM/REMOVE IGNITION KEY" message. To diagnose trouble code P058, see SELF-DIAGNOSTICS -- ALLANTE in ENGINE PERFORMANCE.