Page 79 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 25

DTC code DTC definition DTC check condition Failed part IN
The voltage of crankshaft ● Crankshaft position sensor
position sensor power supply ● Short circuit of crankshaft
Ignition switch at ON and the DI
239 3 circuit is higher than the position sensor circuit and
engine is running
normal value and short to the power source
high voltage power supply ● Engine ECM EG
The speed data based on ● Vehicle speed sensor

the wheel resolution is not ● Poor contact of sensor
TR
241 stable, intermittent or not When the vehicle starts connector or relevant harness
corrector. ECU speed signal fault caused by shock
disappears ● Engine ECM AX
● Fan
The fan control voltage is The ignition switch is
● Fan relay
lower than the normal value “ON”, and the pulse width FR
245 ● Fan driving circuit short to
or short to the low voltage modulator is powered on or
ground
power supply off.
● Engine ECM ST
The voltage of engine high
● High pressure oil pump
pressure pump boosting
● Poor contact of connector BR
assembly 1 circuit is lower
271 Ignition switch at ON or relevant harness fault
than the normal value or
● Fuel pressure sensor
short to the low voltage BW
● Engine ECM
power supply

The voltage of engine high ● High pressure oil pump
EL
pressure pump boosting ● Fuel pressure sensor
assembly 1 circuit is higher ● Driving circuit of
272 Ignition switch at ON
than the normal value or high-pressure fuel pump

short to the high voltage short to power source

power supply ● Engine ECM

● OEMVECM
● Communication interface
SAEJ1939 multiple path in poor contact or open

285 communication PGN Ignition switch at ON ● Communication harness

time-out error failed
● Gear-box ECM
● Engine ECM
● OEMVECM

● Communication interface

SAEJ1939 multiple path in poor contact or open
286 communication configuration Ignition switch at ON ● Communication harness
error failed
● Gear-box ECM

● Engine ECM

DI-025