Auxiliary Input Sound Is Low Or Cannot Be Heard (With Navigation)

Audio System Symptom Troubleshooting - Auxiliary input sound is low or cannot be heard

Auxiliary input sound is low or cannot be heard (with navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- Use auxiliary stereo cables with 3.5 mm ends only.
- Auxiliary accessories may be played on the audio-navigation unit using the auxiliary input.

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

2. Turn on the audio-navigation unit, and connect the customer's auxiliary accessory device to the auxiliary input jack.

3. Check the volume operation.

Is the sound normal?

YES -

Operation is normal at this time.�

NO -

Go to step 4.

4. Make sure the customer's auxiliary accessory device volume is set to high.

Is the volume set to high?

YES -

Go to step 5.

NO -

Raise the auxiliary accessory device volume to high. Make sure the audio-navigation unit volume is turned down before retesting.�

5. Connect the customer's auxiliary accessory device to a known good vehicle (same year/trim), and check the operation of the device.

Does the customer's auxiliary audio accessory operate properly?

YES -

Go to step 6.

NO -

Customer's auxiliary audio accessory or auxiliary stereo cable if faulty.�

6. Turn the ignition switch to LOCK (0).

7. Remove the auxiliary jack assembly Auxiliary Jack Assembly Replacement (With Navigation), and check that the auxiliary jack assembly is properly connected.

Is the auxiliary jack assembly connected properly?

YES -

Go to step 8.

NO -

Reconnect the connector, and recheck the function.�

8. Disconnect auxiliary jack assembly 5P connector.

9. Disconnect audio-navigation unit connector B (24P).

10. Check for continuity between body ground and audio-navigation unit connector B (24P) according to the table.









Is there continuity?

YES -

Short to body ground in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 11.

11. Check for continuity between the terminals of audio-navigation unit connector B (24P) according to the table.









Is there continuity?

YES -

Short in the wire(s) between the audio-navigation unit and the auxiliary jack assembly. Replace the affected shielded harness.�

NO -

Go to step 12.

12. Check for continuity between audio-navigation unit connector B (24P) and auxiliary jack assembly 5P connector according to the table.









Is there continuity?

YES -

Substitute a known-good auxiliary jack assembly and recheck. If the symptom/indication goes away, replace the original auxiliary jack assembly. If the symptom/indication is still present, replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.�

NO -

Open in the wire(s) between audio-navigation unit and auxiliary jack assembly. Replace the affected shielded harness.�