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. 14 and body ground, and between terminal No. 17 and body ground.

Is there battery on both terminals?

YES - Go to step 2.

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




2. Measure the for voltage between navigation unit connector A (17P) terminal No. 9 and body ground, between navigation unit connector B (22P) terminal No. 15 and body ground, and between navigation unit connector C (12P) terminal No. 4 and body ground.

Is there less that 0.1 V?

YES - Replace the navigation unit.

NO - Repair open in the wire between the navigation unit and body ground (G501, G504, G505).