Page 707 - Workshop Manual - Tunland (2017)
P. 707
DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-21
04
Failure code Diagnostic items (DTC definition) Trouble location
• Intake Manifold Pressure Sensor
• Open circuit in engine harness,
Intake Manifold 1 Pressure Sensor- connector or sensor circuit
P122 Voltage above normal or shorted to
• The signal wire is short of the sen-
high voltage power supply
sor power or battery voltage
• ECM
• Intake Manifold Pressure Sensor
• The signal circuit in the engine
Intake Manifold 1 Pressure Sensor- harness or sensor is open or
P123 Voltage above normal or shorted to shorted to ground
high voltage power supply • Power line is open or shorted to
ground
• ECM
• 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
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 1 sensor • Engine coolant temperature sensor
P144 circuit-Voltage above normal or • Open circuit in harness, connector
shorted to high voltage power supply or sensor circuit
