No Picture Is Displayed
No picture is displayedNOTE:
- Always check the connectors for poor connections or loose terminals.
- Inspect the system for Non- OEM accessories like gaming consoles or TV tuners.
1. Turn the ignition switch to ACC (I).
2. Operate the radio, and listen to the audio.
Can you hear the audio?
YES - Go to step 4.
NO - Go to step 3.
3. Check the No. 11 (10 A) fuse in the under-hood fuse/relay box and No. 9 (15 A) fuse in the passenger's under-dash fuse/relay box, and reinstall the fuse if it is OK.
Is the fuse OK?
YES - Go to step 4.
NO - Replace the fuse, and recheck.
4. Turn the ignition switch ON (II).
5. Shield the navigation display 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 - Go to step 6.
NO - Go to step 9.
6. 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 7.
NO - If the +B or ACC wire(s) do not have voltage, repair open in the wire(s) between the under- hood fuse/relay box and passenger's under-dash fuse/relay box and the navigation unit.
7. Check for voltage between navigation unit connector C (8P) terminal No. 4 and the negative battery post.
Is there 0.2 V or less?
YES - Go to step 8.
NO - Repair open or high resitance in the wire between the navigation unit and body ground (G50).
8. Perform the forced starting of the display and diagnosis.
Is the Navi System Link image displayed?
YES - Check all pinfits at the control unit A and C connectors and recheck operation. If connections are OK, substitute a known-good navigation control unit. If the symptom/indication is still present, replace the navigation display unit.
NO - Go to step 9.
9. Measure the voltage between terminal No. 10 and the navigation display 20P connector terminal No. 1 and No. 2 individually.
Is there battery voltage?
YES - Replace the navigation display.
NO - If both terminals No. 1 and No. 2 have no voltage to terminal No. 10, repair open in the wire between terminal No. 10 and G501. If only one of either terminal No. 1 or No. 2 have no voltage to terminal No. 10, repair the open in the affected terminal wire.