Page 724 - Workshop Manual - Tunland (2017)

04-38 DIAGNOSTICS - ENGINE CONTROL SYSTEM

04
Failure code Diagnostic items (DTC definition) Trouble location
• The signal circuit is open or shorted
to the ground
below normal or shorted to low volt- • Power line is open or shorted to
age power supply ground
• Sensor is shorted to the ground
• ECM

Engine VGT nozzle position - me- • Turbocharger
P3616 chanical system is not responding or
• ECM
misaligned
Engine control module calibration
P3697 memory - the intelligent device or • ECM
component fault

Engine protection torque decrease -
P3714 • ECM
condition exists
High pressure common rail fuel
pressure reducing valve - mechanical
P3727 • ECM
system is not responding or mis-
aligned

Instrument control module - Abnor- • BCM, CAN bus and its harness
P3731
mal updating rate • ECM

• Battery
• Postprocessing DPF temperature
Postprocessing diesel particulate fil- sensor module
P4151 ter temperature sensor module - Ab- • Postprocessing DPF temperature
normal updating rate sensor and its harness
• CAN bus and its harness
• ECM

• Postprocessing DPF temperature
Postprocessing diesel particulate fil- sensor module
P4158 ter temperature sensor module - In- • Postprocessing DPF temperature
telligent device or component fault sensor and its harness
• ECM

• Atmospheric pressure sensor
• The signal circuit in the engine
Atmospheric pressure sensor circuit harness or sensor is open or
P222 - Voltage is below normal or shorted shorted to ground
to high voltage power supply • Power line is open or shorted to
ground
• ECM