Diesel Data: Automotive Repair

Symptom Troubleshooting




Navigation System Symptom Troubleshooting - Navigation unit will not eject or accept the navigation DVD

Navigation unit will not eject or accept the navigation DVD

1. Check the No. 7 (7.5 A) and No. 32 (10 A) fuses in the driver's under-dash fuse/relay box.

Are the fuses OK?

YES -

Go to step 2.

NO -

Replace the fuse(s) and recheck.�

2. Turn the ignition switch to ON (II).

3. Eject the DVD from the navigation unit Service and Repair.

Does the navigation DVD eject?

YES -

Go to step 4.

NO -

Go to step 5.

4. Reinsert the navigation DVD.

Does the navigation unit accept the DVD?

YES -

No problems at this time. Inspect for loose or poor connections at navigation unit connector C (8P).�

NO -

Replace the navigation unit Service and Repair.�

5. Measure the voltage between navigation unit connector C (8P) terminal No. 4 and body ground.





Is there less than 0.2 V?

YES -

Repair an open or high resistance in the wire between navigation unit connector C (8P) terminal No. 4 and body ground (G504).�

NO -

Go to step 6.

6. Measure the voltage between navigation unit connector C (8P) terminal No. 1 and body ground.





Is there battery voltage?

YES -

Go to step 7.

NO -

Repair an open in the wire between navigation unit connector C (8P) terminal No. 1 and the No. 7(7.5 A) fuse in the driver's under-dash fuse/relay box.�

7. Measure the voltage between navigation unit connector C (8P) terminal No. 2 and body ground.





Is there battery voltage?

YES -

Replace the navigation unit Voice Control Switch Removal/Installation.�

NO -

Repair an open in the wire between navigation unit connector C (8P) terminal No. 2 and the No. 32 (10 A) fuse in the driver's under-dash fuse/relay box.�