Page 429 - Foton Workshop Manual - Tunland (AT)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-283

DTC inspection
DTC DTC definition Trouble location
conditions
• The diagnosis will • EGR valve
run when the key controller
switch is turned on • EGR valve
EGR (EGR) valve
for the first time. controller connector 04
P1896 controller - beyond
The engine will runs is out of contact,
calibration
occasionally when the harness is open
the command EGR or shorted
valve is closed. • ECM

EGR valve position • When the key
circuit - voltage is switch is switched • EGR valve and its
P2351 below normal or on and the engine harness
shorted to low voltage runs, the diagnosis • ECM
power supply continues to run.

EGR valve control • When the key
circuit -Voltage is switch is switched • EGR valve and its
P2352 above normal or on and the engine harness
shorted to high runs, the diagnosis • ECM
voltage power supply continues to run.

• When the engine is
running and the
EGR valve
command moves,
the diagnosis
EGR valve control
continues to run.
circuits - mechanical • EGR valve and its
After programming
P2357 systems are not harness
of ECM, the EGR
responsive or valve will swing • ECM
misaligned
when the key
switch is on, and in
the process the
diagnosis will also
run.

Diagnosis Procedure

Page 429