Navigation Frequently Asks For Anti-Theft Code and Needs GPS Initialization

Navigation frequently asks for anti-theft code and needs GPS initialization

NOTE:
- Check for low battery.
- This is often caused by losing battery power or a poor ground.
- Make sure the DVD is not scratched or damaged.
- Make sure the correct DVD color and version is installed.

1. Measure the voltage between body ground and navigation unit connector C (8P) terminal No.1.






Is there battery voltage?

YES - Go to step 2.

NO - Repair open or short in the wire between passenger's under-dash fuse/relay box and the navigation unit.

2. Turn the ignition switch ON (II).
3. Measure the voltage between body ground and navigation unit connector C (8P) terminal No.2.






Is there battery voltage?

YES - Go to step 4.

NO - Repair open or short in the wire between passenger's under-dash fuse/relay box and the navigation unit.

4. Turn the ignition switch OFF.
5. Disconnect the navigation unit connector C (8P).
6. Check for continuity between navigation unit connector C (8P) terminal No.4 and body ground.






Is there continuity?

YES - Replace the navigation unit.

NO - Repair open in the wire between navigation unit and body ground (G501).