General Information

Engine Control
P0504 Brake Switch "A"/"B" Correlation - General Information

Component Location





General Description

The Stop lamp switch is used to judge whether the acceleration system is abnormal or not. The stop lamp switch has a duplex system(signals brake test or brake light) to memorize the abnormality when the signals of depressing and releasing the brake pedal are detected simultaneously.

DTC Description

Checking output signals from both Stop lamp switch when all of them are On or OFF simultaneously, if abnormal signal is detected for more than 60 sec., an error is recognized. And if this condition lasts for certain period, ECM sets P0504.

DTC Detecting Condition





Specification





Diagnostic Circuit Diagram