Volume Does Not Increase With Speed (With Multi-Information Display Without Navigation)

Audio System Symptom Troubleshooting - Volume does not increase with speed

Volume does not increase with speed

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

1. Problem verification:

Problem verification
-1. Test-drive the vehicle at freeway speeds, and monitor if the volume increases.

Does the volume increase?
-YES- Intermittent failure, the system is OK at this time.
-NO- The failure is duplicated, go to step 2.

2. Determine possible failure area (audio setting, others):

Determine possible failure area (audio setting, others)
-1. Verify the SVC mode setting in the audio unit sound set-up.

Is the SVC set to off?
-YES- Change the setting to SVC MID, and recheck.
-NO- Go to step 3.

3. Determine possible failure area (audio unit, others):

Determine possible failure area (audio unit, others)
-1. Do the Self-Diagnostic Function, and use the vehicle speed pulse indication Audio System Self-Diagnostic Function.

-2. With the help of an assistant test-drive the vehicle, and watch the VSP signal.

Does the self-diagnostic function indicate a VSP signal?
-YES- Replace the audio unit Audio Unit Removal and Installation.
-NO- Go to step 4.

4. Gauge control module DTC check:

Gauge control module DTC check
-1. Turn the ignition switch to LOCK (0).

-2. Connect the HDS to the DLC.

-3. Turn the ignition switch to ON (II).

-4. Clear the DTCs with the HDS.

-5. Turn the ignition switch to LOCK (0) and then back to ON (II).

-6. Check for DTCs with the HDS.

Are any DTCs indicated?
-YES- Go to indicated DTC's troubleshooting.
-NO- Go to step 5.

5. Open wire check (B_CAN-H line, B_CAN-L line) :

Open wire check (B_CAN-H line, B_CAN-L 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- Replace the audio unit Audio Unit Removal and Installation.
-NO- Repair an open in the wire(s) between the audio unit and the gauge control module (tach).