Page 264 - Foton Workshop Manual - Tunland (AT)
P. 264
04-118 DIAGNOSTICS - ENGINE CONTROL SYSTEM
Failure code Diagnostic items (DTC definition) Trouble location
• ECM
• Fuel pump actuator
Engine fuel pump booster assembly • Fuel pump actuator connector is
P272 1 circuit - voltage is above normal or out of contact, the harness is open
04
shorted to high voltage power supply or shorted
• ECM
• Real time clock battery
Real time clock power interrupt - data • Damage to the wire or joint be-
P319
is unstable, intermittent or incorrect tween the battery and the ECM
• ECM
• Injector
1 cylinder injector solenoid valve
• Injector connector is in poor con-
P322 drive circuit - current is below normal tact, the harness is open or shorted
or open circuit
• ECM
• Injector
3 cylinder injector solenoid valve
• Injector connector is out of contact,
P324 drive circuit - current is below normal
the harness is open or shorted
or open circuit
• ECM
• Injector
4 cylinder injector solenoid valve
• Injector connector is out of contact,
P332 drive circuit - current is below normal
the harness is open or shorted
or open circuit
• ECM
Fuel injector power - intelligent de- • ECM harness is open or shorted
P351
vice or component fault • ECM
sensor power 1 circuit - voltage is • The harness between the sensor
P352 below normal or shorted to low volt- and the ECM is open or shorted
age power supply • ECM
• Intake mass flow sensor
• Intake mass flow sensor loop is
Engine intake mass flow sensor cir-
open
P356 cuit - voltage is above normal or
• Signal circuit in harness or sensor
shorted to high voltage power supply
is shorted to the battery
• ECM
• Intake mass flow sensor
• Intake mass flow sensor loop is
Engine intake mass flow sensor cir-
open
P357 cuit - voltage is below normal or
• Signal circuit in harness or sensor
shorted to low voltage power supply
is shorted to the battery
• ECM
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