Auto Volume Control System
POSSIBLE CAUSE
| Condition | Possible Cause | Action |
|---|---|---|
| Sound volume does not vary according to changes of vehicle speed | Auto volume control system is "OFF" mode | Select auto volume control . |
| Vehicle speed signal faulty | Check vehicle speed signal referring to VEHICLE SPEED SIGNAL INSPECTION (FOR AUDIO UNIT) (IF EQUIPPED) . | |
| Wiring or grounding faulty | Repair circuit . | |
| BCM faulty | Check input and output signal of BCM referring to INSPECTION OF BCM AND ITS CIRCUITS . | |
| Radio assembly faulty | Replace radio assembly . |