Vehicle Speed Input

The inadvertent battery power rundown protection feature is mileage-sensitive. Vehicles with less than 15 miles (24 km) total accumulated miles (km) have a 3 minute (+/- 18 seconds) time-out instead of 10 minutes.

The BCM determines this distance by interfacing with the vehicle speed circuit 389. This circuit grounds 4000 times per 1.6 km (1 mile) traveled. Once the vehicle has been driven past the 15 mile (24 km) mark, the BCM changes inadvertent battery power rundown protection timer from three minutes to 10 minutes.

In addition, the BCM uses the vehicle speed circuit 389 for the operation of the turn signal reminder.

If the inadvertent battery power rundown protection stays at three minutes on vehicles with more than 15 miles (24 km), then refer to Audible Warnings for possible malfunction of the turn signal reminder. Audible Warning Device