MAP Disc cannot be Inserted

CHECK MAP DISC
NG: REPLACE AMP DISC

OK: Go To Next Step
INSERT MAP DISC WITHOUT TILT
OK: NORMAL

NG: Go To Next Step
CHECK NAVIGATION ECU POWER SOURCE CIRCUIT
1. Check the navigation ECU power source circuit (see NAVIGATION ECU POWER SOURCE CIRCUIT ).
NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: REPLACE NAVIGATION ECU