No Picture Is Displayed
No picture is displayedDiagnostic Test: Navi System Link
NOTE: Always check the connectors for poor connections or loose terminals.
1. Check the No.7 (10 A) fuse and No.32 (7.5 A) fuse in the under-dash fuse relay box, and reinstall the fuses if they are OK.
Are the fuses OK?
YES - Go to step 2.
NO - Replace the fuse and recheck.
2. Turn the ignition switch to ACC (I).
3. Operate the radio and listen to the audio.
Can audio be heard?
YES - Go to step 4.
NO - Check the ACC circuit.
4. Turn the ignition switch ON (II).
5. Measure the voltage between body ground and navigation unit connector C (8P) terminals No.1 and No.2 individually.
Is there battery voltage?
YES - Go to step 6.
NO - If the +B wire does not have voltage, repair open in the wire between the under-dash fuse relay box and the navigation unit. If the ACC wire does not have voltage, repair open in the wire between the under-dash fuse/relay box and the navigation unit
6. Turn the ignition switch OFF.
7. Disconnect the navigation unit connector C (8P).
8. Check for continuity between navigation unit connector C (8P) terminal No.4 and body ground.
Is there continuity?
YES - Go to step 9.
NO - Repair open in the wire between the navigation unit and body ground (G602).
9. Reconnect the navigation unit connector C (8P).
10. Perform the forced starting of the display.
Is the diagnosis menu of the picture diagnosis displayed?
YES - Go into the Diagnostic mode and use the "Navi System Link" diagnostic to check the links.
NO - Go to step 11.
11. Shield the display unit from the sun with your hand, and check that the display is back lit (only back light is ON.)
Can you see the back light?
YES - Replace the navigation unit.
NO - Go to step 12.
12. Turn the ignition switch ON (II)
13. Measure the voltage between body ground and display unit 20P connector terminal No.1 and No.2 individually.
Is there battery voltage?
YES - Replace the display unit.
NO - If the +B wire does not have voltage, repair open in the wire between the under dash fuse relay box and the display unit. If the ACC wire does not have voltage, repair open in the wire between the under dash fuse/relay box and the display unit.