Page 179 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 125

Wheel speed sensor failure IN
4+1 Right front wheel speed sensor circuit fault
4+2 Left front wheel speed sensor circuit fault DI

4+3 Right rear wheel speed sensor circuit fault
4+4 Left rear wheel speed sensor circuit fault EG
Circuit diagram

TR

Left Right Left Right
front wheel Left front wheel Right rear wheel Left rear wheel Right
speed sensor front wheel speed sensor front wheel speed sensor rear wheel speed sensor rear wheel AX
power supply speed sensor power supply speed sensor power supply speed sensor power supply speed sensor

FR
Brown Black Brown Black Brown Black Brown Black

ST

Brown Black Brown Black
BR

Brown Black Brown Black
BW
Brown Black Brown Black

Left Right Left Right
front wheel front wheel rear wheel rear wheel
speed sensor speed sensor speed sensor speed sensor 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 whether the ABS wheel speed data are consistent with that of the speedometer.

Standard: value changed

Operation of diagnosis instrument Standard value

Driving Wheel speed: consistent with the actual travel speed
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-125