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

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

1. Measure the voltage between navigation unit connector A (17P) terminal No. 17 and body ground.






Is there battery voltage?

YES - Go to step 2.

NO - Repair open in the wire between the under-dash fuse/relay box and the navigation unit.

2. Turn the ignition switch to ON (II).
3. Measure the voltage between navigation unit connector A (17P) terminal No. 14 and body ground.






Is there battery voltage?

YES - Go to step 4.

NO - Repair open in the wire between the under-dash fuse/relay box and the navigation unit.

4. Measure the voltage between navigation unit connector A (17P) terminal No. 9 and body ground, and between navigation unit connector C (12P) terminal No. 4 and body ground.






Is there less than 0.1 V?

YES - Replace the navigation unit.

NO - Repair open in the wire between the navigation unit and body ground (G504, G505).