Page 90 - Foton Workshop Manual - Auman EST-M

DI - 36 Diagnosis - Diagnosis-fault diagnosis of electronic and electrical parts

DTC code DTC definition DTC check condition Failed part
● EGP inlet temperature
EGP outlet temperature sensor
3147 Ignition switch at ON
sensor short to ground ● Sensor short to ground
● Engine ECM
3151 Lack of catalytic agent When engine running ● Insufficiency of catalyst
● Intake temperature sensor
EGP inlet and outlet
Ignition switch at ON and the ● EGP inlet temperature
3163 temperature sensors
engine is running sensor
connected reversely
● Engine ECM
SCR catalytic agent ● Urea tank temperature
Ignition switch at ON and the
3164 temperature too high which sensor
engine is running
causes the engine torque limit ● Engine ECM
● Urea tank temperature
Post-treatment catalytic agent Ignition switch at ON and the
3236 sensor
temperature high engine is running
● Engine ECM
SCR injection cell motor Ignition switch at ON and the ● Fault of urea pump
3569
failure engine is running assembly
● Blockage of urea outlet
Ignition switch at ON and the pipe
3575 Urea return pipe blocked
engine is running ● Impurities in urea or failure
of urea
● Short circuit or open circuit
Fault of outlet NOX sensor Ignition switch at ON and the of NOX sensor power
3681
power supply engine is running supply wire
● Engine ECM
● Nitrogen oxide sensor
SCR injection cell injection Ignition switch at ON and the
3697 ● Urea pump assembly
quantity abnormal engine is running
● Engine ECM
● Nitrogen oxide sensor
SCR injection cell injection Ignition switch at ON and the
3726 ● Urea pump assembly
quantity abnormal engine is running
● Engine ECM
● Blockage or breakage of
SCR injection cell air supply Ignition switch at ON and the brake air pipe
3738
too low engine is running ● Air solenoid valve
● Engine ECM

DI-036