Page 548 - Foton Workshop Manual - Auman EST-M

EG - 32 Engine section – Engine (Cummins ISF3.8)

DTC code DTC definition DTC check condition Failed part

The voltage of atmospheric pressure • Barometric pressure sensor
sensor is higher than the normal value • Atmospheric pressure sensor circuit and
221 Ignition switch at ON
or short to the high voltage power power supply short
supply • Engine ECM

• Barometric pressure sensor

The voltage of atmospheric pressure • Sensor connector in poor contact
222 sensor is lower than the normal value or Ignition switch at ON • Atmospheric pressure sensor circuit
short to the lower voltage power supply short to ground
• Engine ECM

• Crankshaft position sensor

The data of engine crankshaft • Target wheel of crankshaft position
speed/position is valid but higher than sensor
234 When engine running
the normal working range (maximum • Entry of external fuel into air inlet
severity) • Inversion (idling) of engine
• Engine ECM

• Crankshaft position sensor
The voltage of crankshaft position
Ignition switch at ON
sensor power supply 3 circuit is lower • Sensor connector in poor contact
238 and the engine is
than the normal value and short to the • Sensor circuit short to the ground
running
low voltage power supply
• Engine ECM
The voltage of crankshaft position • Crankshaft position sensor
Ignition switch at ON
sensor power supply 3 circuit is higher • Crankshaft position sensor circuit and
239 and the engine is
than the normal value and short to the power supply short
running
high voltage power supply • Engine ECM

The speed data based on the wheel • Speed sensor
resolution is not stable, intermittent or • Poor contact of sensor connector or
241 When the vehicle starts
not corrector. ECM speed signal relevant harness fault caused by shock
disappears • Engine ECM

Ignition switch at ON • Fan
The fan control voltage is lower than and pulse-width
• Fan relay
245 the normal value or short to the low modulation (PWM)
• Fan drive circuit short to the ground
voltage power supply device powered on or
open • Engine ECM
• Immobilizer winding
The valid indicator data of the anti-theft
• Connector in poor contact or relevant
269 password are unstable, intermittent or Ignition switch at ON
harness failure
incorrect
• Engine ECM

EG-032