Chery A21 2005, Service Manual, Page: 327 / 475

CHERY
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A21 SERVICE MANUAL ENGINE EFI SYSTEM
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decrease its life. And do not exchange anode and cathode of the pump.
●
Carry out jump spark inspection at necessary time when inspect the ignition system, and
the time to inspect must be short. Do not open the throttle valve to prevent a lot of
unburned gasoline entering exhaust pipe and damage the 3-way catalytic converter ( It is
better to take off the corresponding injector insert during the jump spark testing)
●
The adjustment of idle speed is done completely by EFI without manual work. The
accelerator stop screw of throttle valve has been fixed well in advance by manufacturer so
that it is not allowed to change it original position by the customer.
●
Do not exchange the anode and cathode of the accumulator to prevent damaging the
electronic component. This system uses cathode ground.
●
Do not disassemble accumulator cable when the engine is running.
●
Disassemble the cable of accumulator anode and cathode, and ECU when there is welding
work on the car.
●
Do not inspect the input and output signal of component by impaling the lead surface.
1.3. SERVICE TOOLS
Tool name:
EFI system diagnostic tester
Function:
Read/clear the breakdown code in EFI and
inspect data, test part motion.
Tool name:
Ignition timing lamp
Function:
Inspect engine ignition timing.
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