Page 181 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 127

ABS solenoid valve failure IN
2+1 Right front solenoid valve circuit fault
2+2 Left front solenoid valve circuit fault DI

2+3 Right rear solenoid valve circuit fault
2+4 Left rear solenoid valve circuit fault EG
Circuit diagram

TR

Left Left Right Right Left Left Right Right
front wheel front wheel front wheel front wheel rear wheel rear wheel rear wheel rear wheel
solenoid valve solenoid valve solenoid valve solenoid valve solenoid solenoid valve solenoid solenoid valve AX
power supply signal power supply signal power supply signal power supply signal

FR
Blue Red - Blue - Green - Red Green Red - Red -
- white Yellow red red Black Green

Red - Red - ST
Red Green Black Green

BR
Blue Red - White - Blue - Green White -
- white Yellow black red - red black Green White - Red - Red - White -
White - Red black Black Green black White -
Left Right black Left Right black BW
front whee front whee rear wheel rear wheel
l solenoid l solenoid solenoid solenoid
valve valve valve valve
EL

Diagnosis procedure

1. Check the ABS data stream

a. Ignition switch:LOCK.

b. Connect the diagnosis instrument to the diagnosis interface.

c. Circuit test, check the performance of ABS solenoid valve.

Standard: value changed

Operation of diagnosis instrument Standard value

When the vehicle is traveling at a speed greater than 20km / h, ABS solenoid valve: opened and closed alternately
press the brake pedal firmly
Danger

Shall complete this operation under the coordination of a helper. It shall be done on a broad and empty
road.
Is the inspection ok?

Yes>Finish checking.
No> Go to Step 2 (Take left front wheel speed sensor as an example).

DI-127