If the charging system voltage is hovering near 11.6 volts, stepping on the brakes will turn on the brake lights, dropping the voltage further and causing the computer to raise engine idle.

Question

Quizplus · Accepted Answer

When the charging system voltage is low and dropping further due to brake light activation, the engine computer may increase the idle speed to compensate for the increased electrical load.

If the Charging System Voltage Is Hovering near 11