Page 173 - Foton Workshop Manual - Auman EST-M
P. 173
Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 119
The diagnosis instrument cannot communicate with ECM IN
Failure phenomenon list
DI
Failure phenomenon Possible reason Failure elimination
● Overhaul the power supply circuit of
1. Diagnosing interface power supply failure EG
diagnostic interface
● Overhaul ABSECU power supply
The diagnosis instrument cannot 2. ABSECU power supply failure TR
failure
communicate with ABSECU
3. Failure of harness between ABSECU and ● Check, repair or replace relevant
AX
diagnosis instrument harness
4. ABSECU failure ● Replace ABS ECU
FR
Circuit diagram
ST
Battery
BR
Instrument
fuse box
BW
EL
Battery power supply
Diagnosis interface
K line Grounding Grounding
White - White -
black black
Green Yellow White
White -
black
K line
DI-119
