Page 81 - Foton Workshop Manual - Auman EST-M

Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts DI - 27

DTC code DTC definition DTC check condition Failed part IN
●There is a short of the
The voltage of engine ECM
engine ECM sensor power
sensor power supply 1 is DI
Ignition switch at ON and the supply 1 to the ground.
352 lower than the normal value
engine is running ● Sensor connector in poor
or short to the low voltage
contact EG
power supply
● Engine ECM

The voltage of engine ECM ●There is a short in the
TR
sensor power supply 1 is circuit of the engine ECM
After the engine runs or
386 higher than the normal value sensor power supply 4 or to
ignition switch is “ON”
or short to the low voltage the power supply AX
power supply ● Engine ECM

● Engine oil pressure switch
FR
● High pressure oil pump
The data of engine oil way
● Fault of oil pressure switch
pressure is valid but lower
415 When engine running connector or harness ST
than the normal working
● Air leakage of oil pressure
range
pipe
BR
● Engine ECM
The data of fuel moisture
● Fuel filter
indicator is valid but higher BW
418 Ignition switch at ON ● Fuel moisture sensor
than the normal working
● Engine ECM
range (minimum severity)
EL
The voltage of fuel moisture
● Fuel moisture sensor
indicator sensor is higher
● Water in fuel sensor circuit
428 than the normal value or Ignition switch at ON
short to power source
short to the high voltage
● Engine ECM
power supply

● Fuel moisture sensor
The voltage of fuel moisture ● Circuit of water in fuel
indicator sensor is lower than sensor short to ground
429 Ignition switch at ON
the normal value or short to ● Sensor connector in poor

the low voltage power supply contact
● Engine ECM
● Battery
The circuit voltage data of
● Generator
battery is valid but lower than Ignition switch at ON and the
441 ● Relevant harness or
the normal working range engine is running
connector fault
(medium severity)
● Engine ECM
The circuit voltage data of
● Battery
battery is valid but higher Ignition switch at ON and the
442 ● Generator
than the normal working engine is running
● Engine ECM
range (medium severity)
The injector metering oil rail ● Pressure limiting valve
1 pressure data is valid but ● High pressure oil pump
449 higher than the When engine running ● Metering control cell

normal working range ● Oil rail pressure sensor

(maximum severity) ● Engine ECM

DI-027