Troubleshooting of Being on Indicator Light of the Unpressed Brake Pedal Based on Magotan B8L
A Magotan B8L vehicle is set at ON position during the start process.The engine cannot be started when pressing the brake pedal and pressing the start button at the same time,during which the brake signal light is off,while indicator light of the unpressed brake pedal is being on.To renovate the vehicle,some measures are carried to analyze the probable cause.The normal start of the vehicle must meet the six conditions of braking,P/N gear,68 permit,G28 value be 0,brake monitoring,and 50 electricity.On the grounds of the malfunction phenomena of failing starting and being on indicator light of the unpressed brake pedal,the fault diagnosis analysis shows that J623(Engine Control Unit)does not monitor F(Brake Signal Witch)signal,resulting in the being on indicator light of the unpressed brake pedal when the brake pedal stepped on.According to the analysis and relative measuring,the reason that J623 does not monitor F signal is due to the breaking of insurances SB3,SB4,SB8.With the start button on and the brake pedal down,the vehicle starts normally as soon as the same specification replacement of insurances SB3,SB4,SB8.In the meanwhile,the indica-tor light of the unpressed brake pedal,which ever always illuminated,is no longer burning.This paper represents the principle,probale causes and troubleshooting process of the being on indicator light of the unpressed brake pedal elabo-rately and systematically,helping to provide reference for engine troubleshooting.
Magotan B8LBeing on indicator light of the unpressed brake pedalEngine control unitBrake signal switchFuse
万方数据
维普
