Page 262 - Foton Workshop Manual - Tunland (AT)
P. 262
04-116 DIAGNOSTICS - ENGINE CONTROL SYSTEM
Failure code Diagnostic items (DTC definition) Trouble location
• Accelerator pedal or lever position
signal circuit is shorted to the bat-
tery or (+) 5V power supply
• The circuit of the accelerator pedal
Accelerator pedal or lever position
04 circuit in the harness or joint is
sensor 1 circuit- voltage higher than
P131 open
normal or short circuit to high voltage
• The accelerator power supplies is
power supply
shorted circuit to the battery
• Accelerator pedal or lever position
sensor fault
• ECM
• The accelerator pedal or lever posi-
tion signal is ground to the engine,
or the wire loop in the OEM har-
Accelerator pedal or lever position ness or sensor is shorted.
sensor 1 circuit voltage lower than • Accelerator pedal or lever position
P132
normal or short circuit to low voltage sensor fault
power supply • A open circuit of loop wire in a ac-
celerator signal, power supply,
harness or joint
• ECM
• Oil pressure switch
Engine oil rail pressure - data valid • The oil pressure switch connector
P143 but below normal operating range - is out of contact, the harness is
medium severity level open or shorted
• ECM
• Engine coolant temperature sensor
• Open circuit in harness, connector
Engine coolant temperature 1 sensor or sensor circuit
P144 circuit-Voltage above normal or
• The signal circuit is open or shorted
shorted to high voltage power supply
to the power supply
• ECM
• Engine coolant temperature sensor
• The coolant temperature sensor
Engine coolant temperature - data is connector is in poor contact and
P151 valid but below normal operating
the sensor harness is open or
range - highest severity level
shorted
• ECM
• Intake manifold pressure tempera-
Intake Manifold 1 temperature sen-
ture sensor
P153 sor-Voltage is above normal or • Open circuit in harness, connector
shorted to high voltage power supply
or sensor circuit
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