Engine Control Module

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

The ECM has some diagnostic features associated with the PASS Key fuel enable input, including trouble code 58, the "THEFT SYSTEM PROBLEM/CAR MAY NOT RESTART" message and the "STARTING DISABLED/DUE TO THEFT SYSTEM/REMOVE IGNITION KEY" message. See DRIVER INFORMATION MESSAGES  .