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®) Note • Inspect the ALC function (without Bose®) or AudioPilot®2 function (with Bose®) while driving the vehicle and playing a CD.

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | • Does the ALC function or AudioPilot®2 function turn on? | Yes | Go to the next step.
No | Without Bose® • Replace the audio unit. (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.) With Bose® • Replace the audio amplifier if the following occurs: (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.) ― The volume changes suddenly.
2 | • Turn the ALC function or AudioPilot®2 function off. • Does the sound change while driving the vehicle? | Yes | Replace the audio unit. (See CENTER PANEL UNIT REMOVAL/INSTALLATION.) (See CENTER PANEL UNIT DISASSEMBLY/ASSEMBLY.)
No | The system is normal. Explain the ALC function or AudioPilot®2 function to the customer.