Page 440 - Foton Workshop Manual - Tunland (AT)

04-294 DIAGNOSTICS - ENGINE CONTROL SYSTEM

DTC inspection
DTC DTC definition Trouble location
conditions
VGT actuator drive
temperature is too
• After the key switch • Variable geometry
high (calculated
is turned on, the turbocharger
04 P1962 value) - data is valid diagnosis continues actuator
but above normal
to run . • ECM
operating range -
lowest severity level
• Variable geometry
• After the engine
VGT actuator drive turbocharger
operates or the key
circuit (motor) - switch is in the ON actuator and its
P2387 mechanical system is harness
position, the
not responsive or diagnosis continues • Postprocessing
misaligned. system
to run.
• ECM

• After the key switch
is turned on for the
first time, the
diagnosis continues
to run .
• Variable geometry
• When the key
turbocharger
VGT actuator control switch is turned on
P2449 actuator cooling
- beyond calibration for the first time, the system
key switch must be • ECM
completely shut
down for more than
30 seconds, and
then the diagnosis
will run.

• After the engine • Variable geometry
VGT actuator operates or the key turbocharger
controller - intelligent switch is in the ON actuator and its
P2634
device or component position, the harness
failure diagnosis continues • 后处理系统
to run. • ECM

• After the engine
• Variable geometry
operates or the key
VGT actuator drive switch is in the ON turbocharger
P2635 circuit - condition actuator and its
position, the
exists harness
diagnosis continues
• ECM
to run.
• After the engine
VGT actuator drive • Variable geometry
P2636 operates or the key
circuit - condition turbocharger
switch is in the ON

Page 440