Chery A21 2005, Service Manual, Page: 370 / 475

CHERY
·
A21 SERVICE MANUAL ENGINE EFI SYSTEM
47
DTC: P0506 Rotating speed of idle speed is lower than target idle speed
No. Operating steps Result Follow up steps
1
Connect the diagnostic tester and commutator, put the
ignition switch to
“
OFF
”
.
Next step
Yes Next step
2
Check if the throttle valve adjusting screw, accelerator
cable and throttle valve working in good conditions.
No
Carry out the
necessary
repair and
maintenance
Yes Next step
3 Check if the idle speed regulator works in good conditions.
No
Carry out the
necessary
repair and
maintenance
Yes Next step
4
E, check if the pressure of the fuel supplying system is too
low
F, check if the injector is jammed
G, check if the exhaust system is not straightway
No
Replace speed
sensor
DTC: P0507 Rotating speed of idle speed is higher than target idle speed
No. Operating steps Result Follow up steps
1
Connect the diagnostic tester and commutator, put the
ignition switch to
“
OFF
”
Next step
Yes Next step
2
Check if the throttle valve adjusting screw, accelerator
cable and throttle valve working in good conditions.
No
Carry out the
necessary repair
and
maintenance
Yes Next step
3 Check if the idle speed regulator works in good conditions.
No
Carry out the
necessary repair
and
maintenance
Yes
Carry out the
necessary repair
and
maintenance
4
A, check if the system is leaking;
B, check if the injector is leaking;
C, check if the pressure of fuel supplying system is too
high
No Diagnosis help
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