General Information

Brake

Electronic Stability Control - C2231 Vacuum Pump System Fail - General Information

Component Location





General Description

The Vacuum Pump System is set up in a vehicle in order to make the vacuum enough when a driver presses the brake pedal on the high ground. To operate this system, the vacuum pump is installed on a vehicle.
If the vacuum is not sufficient to press the brake pedal, the HECU senses it through the vacuum switch, which is installed on booster. And then the HECU supplies the power to the vacuum pump by grounding the circuit of the vacuum pump relay. When the vacuum pump is supplied with electric power, it makes the vacuum and supplements it to the booster.

DTC Description

The HECU monitors the vacuum pump system for a normal operation and if it senses that there is a problem in the vacuum pump system, this DTC is set.

DTC Detecting Condition





Diagnostic Circuit Diagram