Audio System Information Does Not Display On The Multi-Information Display (With Navigation)

Audio System Symptom Troubleshooting - Audio system information does not display on the multi-information display

Audio system information does not display on the multi-information display unit

NOTE:
* Check the vehicle battery condition first Battery Test.
* Check the connectors for poor connections or loose terminals.

1. Determine possible failure area (audio system, others):

Determine possible failure area (audio system, others)
-1. Turn the ignition switch to ON (II).

-2. Check if any MID information appears on the multi-information display unit.

Is there any information displayed?
-YES- Go to step 2.
-NO- Go to Multi-information display unit does not work troubleshooting Multi-Information Display Unit Does Not Work.

2. Problem verification:

Problem verification
-1. Turn on the audio system, and press the AUDIO button to check if the multi-information display changes to the audio information screen.

Is the audio information displayed?
-YES- Intermittent failure, the system is OK at this time.
-NO- The failure is duplicated, go to step 3.

3. Shorted wire check (GA_SYS_ON line):

Shorted wire check (GA_SYS_ON line)
-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connectors.





-3. Check for continuity between test points 1 and 2.









Is there continuity?
-YES- Repair a short to body ground in the wire between the multi-information display unit and the audio-navigation unit.
-NO- Go to step 4.

4. Open wire check (GA_SYS_ON line):

Open wire check (GA_SYS_ON line)
-1. Check for continuity between test points 1 and 2.









Is there continuity?
-YES- Go to step 5.
-NO- Repair an open in the wire between the audio-navigation unit and the multi-information display unit.

5. Shorted wire check (GA_BUS+ line, GA_BUS- line):

Shorted wire check (GA_BUS+ line, GA_BUS- line)
-1. Disconnect the following connector.





-2. Check for continuity between test points 1 and 2.














Is there continuity?
-YES- There is a short to body ground in the wire(s) between the audio-navigation unit and the multi-information display unit. Replace the affected shielded harness.
-NO- Go to step 6.

6. Shorted wire check (GA_BUS+ line to GA_BUS- line):

Shorted wire check (GA_BUS+ line to GA_BUS- line)
-1. Check for continuity between test points 1 and 2.









Is there continuity?
-YES- There is a short in the wire(s) between the audio-navigation unit and the multi-information display unit. Replace the affected shielded harness.
-NO- Go to step 7.

7. Shorted wire check (SH_GA_BUS line to another lines):

Shorted wire check (SH_GA_BUS line to another lines)
-1. Check for continuity between test points 1 and 2.














Is there continuity?
-YES- There is a short in the wires between the audio-navigation unit and the multi-information display unit. Replace the affected shielded harness.
-NO- Go to step 8.

8. Open wire check (GA_BUS+ line, GA_BUS- line):

Open wire check (GA_BUS+ line, GA_BUS- line)
-1. Check for continuity between test points 1 and 2.














Is there continuity?
-YES- Go to step 9.
-NO- There is an open in the wire(s) between the audio-navigation unit and the multi-information display unit. Replace affected shielded harness.

9. Determine possible failure area (related unit, others):

Determine possible failure area (related unit, others)
-1. Reconnect audio-navigation unit connector C (14P) and multi-information display unit connector A (32P).

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

-3. Turn on the audio system, and press the AUDIO button to check if the multi-information display changes to the audio information screen.

Is the audio information displayed?
-YES- Go to step 10.
-NO- Go to step 11.

10. XM receiver check:

XM receiver check
-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connector.





-3. Reconnect XM receiver connector A (14P).

-4. Turn the ignition switch to ON (II).

-5. Turn on the audio system, and press the CD/XM button to check if the navigation display changes to the XM information screen.

Is the XM information displayed on the navigation display?
-YES- Replace the HandsFreeLink control unit Service and Repair.
-NO- Replace the XM receiver XM Receiver Removal and Installation.

11. Audio-navigation unit check:

Audio-navigation unit check
-1. Turn the ignition switch to LOCK (0).

-2. Substitute a known-good multi-information display unit Multi-Information Display Unit Removal And Installation, and recheck.

Does the symptom go away?
-YES- Replace the original multi-information display unit.
-NO- Replace the audio-navigation unit Audio-Navigation Unit Removal and Installation.