Inspection Procedure

Display check mode (Touch switch, Touch point screen).
1. NG: Replace multi display.
2. OK: Go to next step.
Check "AVC-LAN communication circuit", see AVC-LAN (COMMUNICATION BUS) CIRCUIT .
CHECK:

Check continuity of the wire harness between the navigation ECU and the multi display.

OK:

Continuity
1. NG: Replace or repair AVC-LAN circuit.
2. OK: Replace navigation ECU.