Page 266 - Foton Workshop Manual - Tunland (AT)
P. 266
04-120 DIAGNOSTICS - ENGINE CONTROL SYSTEM
Failure code Diagnostic items (DTC definition) Trouble location
Battery 1 voltage - data is valid but • Battery
P442 above normal operating range - • Generator and its harness
medium severity level • ECM
• Oil rail pressure sensor
04
Fuel injector metering oil rail 1 pres-
• Oil rail pressure sensor connector
sure sensor circuit - voltage is above
P451 is iin poor contact, the harness is
normal or shorted to high voltage
open or shorted
power supply
• ECM
• Oil rail pressure sensor
Fuel injector metering oil rail 1 pres-
• Oil rail pressure sensor connector
sure sensor circuit - voltage is below
P452 is iin poor contact, the harness is
normal or shorted to high voltage
open or shorted
power supply
• ECM
• The engine harness or OEM output
Auxiliary input / output 2 circuit - controls solenoid valve is open
P527 voltage is above normal or shorted • OEM harness is shorted to power
to low voltage power supply supply
• ECM
• Oil rail pressure sensor
• Fuel pump actuator
Fuel injector metering oil rail 1 pres- • Oil rail pressure sensor or fuel
sure- data is valid but above normal
P553 pump actuator connector is in poor
operating range - medium severity
contact, the harness is open or
level
shorted
• ECM
• Oil rail pressure sensor
• Fuel pump actuator
Fuel injector metering oil rail 1 pres-
• Oil rail pressure sensor or fuel
sure- data is valid but below normal
P559 pump actuator connector is in poor
operating range - medium severity
contact, the harness is open or
level
shorted
• ECM
• Starter relay
Starter motor relay drive circuit - • The harness of relay or ECM is
P584 voltage is above normal or shorted
open, break or short
to high voltage power supply
• ECM
• Starter relay
Starter motor relay drive circuit -
• The harness of relay or ECM is
P585 voltage is below normal or shorted
open, break or short
to high voltage power supply
• ECM
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