No Picture Is Displayed

1. Check the NAVIGATION (10 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 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 RED/YEL wire does not have voltage, repair open in the wire between the passenger's under-dash fuse relay box and the navigation unit.

If the YEL/BLK wire does not have voltage, repair open in the wire between the driver's under-dash fuse relay box and the navigation unit.




6. Check for continuity between navigation unit connector C (8P) terminal No.4 and body ground.

Is there continuity?

YES - Go to step 7.

NO - Repair open in the wire between the navigation unit and body ground (G551).

7. Turn the ignition switch OFF.
8. Perform the forced starting of display.

Is the diagnosis menu of the picture diagnosis displayed?

YES - Perform the System Links Test in the Picture Diagnosis Test menu.

NO - Go to step 9.

9. Shield the display unit from the sun with your hand, and check that the display is black (only back light is ON.)

Can you see the back light?

YES - Replace the navigation unit.

NO - Replace the display unit.