Ignition Switch Cannot Be Moved From Accessory (I) to LOCK (0) (Key Is Pushed In, the Shift Lever In P)

Ignition switch cannot be moved from ACCESSORY (I) to LOCK (0) (key is pushed in, the shift lever in P)

Diagnostic Procedure:

1. Interlock control system circuit

2. Key interlock solenoid stuck ON

3. Park pin switch stuck ON

4. Transmission range switch ATPP line opened

Also check for:

- Troubleshoot the key interlock system circuit. Interlock System - Key Interlock System Circuit Troubleshooting
- Inspect the transmission range switch. Transmission Range Switch Test