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 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 that 0.1 V?

YES - Replace the navigation unit.

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