ECM INPUT CODE EI79 - CRUISE CONTROL ENABLE ON/OFF INPUT
The cruise control enable switch provides power to the cruise enable input of the ECM. The ECM cannot allow cruise control operation until the enable or instrument panel switch is turned to the "ON" position, which passes 12 volts to ECM pin "C12".
The Amber cruise "ON" indicator can be used to monitor cruise control switch status. Turn cruise control switch on and manipulate wiring and connectors. If switch or circuit from fuse to switch are open, the Amber indicator light will go out.
If the cruise control 3-amp fuse blows intermittently, turn cruise control switch on, manipulate wiring, connectors, and cruise control/steering column switch. If circuit becomes grounded, the fuse will blow.
