Ignition Switch: Description and Operation

SYSTEM OPERATION
The ignition switch is located on the steering column. The Key-In-Switch is located in the ignition switch module. For electrical diagnosis of the Key-In-Switch, For removal/installation of either the key lock cylinder or ignition switch, refer to Ignition Switch and Key Cylinder Replacement.

On vehicles equipped with an automatic transmission and a steering column mounted shifter, an interlock device is located within the steering column. This interlock device is used to lock the transmission shifter in the PARK position when the key is in the LOCKED or ACCESSORY position. The interlock device within the steering column is not serviceable. If repair is necessary, the steering column assembly must be replaced.

On vehicles equipped with an automatic transmission and a floor mounted shifter, a cable connects the interlock device within the steering column assembly, to the transmission floor shift lever. This interlock device is used to lock the transmission shifter in the PARK position when the key is in the LOCKED or ACCESSORY position. The interlock device within the steering column is not serviceable. If repair is necessary, the steering column assembly must be replaced. The shifter interlock cable can be adjusted or replaced.