Diagnostic Routine G

Diagnostic Routine G

Diagnostic Overview

The Ignition Key Cannot Be Returned to the OFF Position

Refer to Wiring Diagram Set 37 for schematic and connector information Electrical Diagrams.

Normal Operation and Fault Conditions

The key removal inhibit solenoid (part of the ignition switch) receives battery voltage from BCM (Body Control Module) fuse 28 (15A). When the selector lever is moved into the PARK position, the park range switch (part of the selector lever) opens, interrupting a ground circuit to the key removal inhibit solenoid. The key removal inhibit solenoid deactivates and allows the ignition lock cylinder to be turned to the OFF position and the key to be removed.

Pinpoint Test

1. CHECK FOR AN ENERGIZED KEY REMOVAL INHIBIT SOLENOID

1. Disconnect: BCM (Body Control Module) fuse 28 (15A).

2. Attempt to turn the ignition lock cylinder to the RUN position and then back to the OFF position and remove the key.

Can the ignition lock cylinder be turned to the OFF position and can the key be removed?








2. CHECK THE IGNITION SWITCH FOR MECHANICAL DAMAGE

1. Remove the ignition switch. REFER to Ignition Switch .

2. Attempt to turn the ignition lock cylinder to the OFF position and remove the ignition key.

Does the ignition lock cylinder turn to the OFF position and can the key be removed?








3. CHECK THE KEY REMOVAL INHIBIT SOLENOID CIRCUIT FOR GROUND

1. Select PARK.

2. Disconnect: Ignition Switch.

3. Measure:





Is the resistance to ground greater than 10,000 ohms?








4. ISOLATE THE SHORT TO GROUND IN THE KEY REMOVAL INHIBIT SOLENOID CIRCUIT

1. Disconnect: Brake Shift Interlock.

2. Measure:





Is the resistance to ground greater than 10,000 ohms?