NO.6 VOLUME INCREASES/DECREASES WHILE DRIVING THE VEHICLE [ENTIRE AUDIO SYSTEM]SM2446104
NO.6 VOLUME INCREASES/DECREASES WHILE DRIVING THE VEHICLE [ENTIRE AUDIO SYSTEM]

id0903e2818500

6

Volume increases/decreases while driving the vehicle

Possible DTC

—
Possible cause
• Audio unit malfunction (without Bose ®)
• Audio amplifier malfunction (with Bose ®)
• CAN signal wiring harness malfunction
Note
• Inspect the ALC function (without Bose ®)/AudioPilot ®2 function (with Bose ®) while driving the vehicle with playing the CD, etc.

Diagnostic procedure

STEP

INSPECTION

ACTION
1
• Does the ALC (Without Bose ®)/AudioPilot ®2 function (With Bose ®) turn on?
Yes
Go to the next step.
No
Without Bose ®:
• Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)
With Bose ®:
• Replace the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
2
• Turn off the ALC (Without Bose ®)/AudioPilot ®2 function (With Bose ®).
• Does the sound change while driving the vehicle?
Yes
Without Bose ®:
• Replace the audio unit. (See AUDIO UNIT REMOVAL/INSTALLATION.)
With Bose ®:
• Replace the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
No
The system is normal.
Explains the ALC (Without Bose ®)/AudioPilot ®2 function (with Bose ®) to the customer.