Maintenance Manual for Chery·Windcloud Marelli EFI System
again to restart fuel pump. Check to see if fuel
pressure is established.
No
Go to Step 16
Yes
Replace fuel
pressure regulator
15 Turn on fuel gauge valve, clamp the fuel return pipe
with fuel return interceptor to stop fuel returning.
Check to see if fuel pressure occurs quickly.
No
Repair or replace
injector or fuel
pipe
Yes
Repair or replace
fuel inlet pipe
16 Check fuel inlet pipe to see if leakage or blockage
occurs.
No
Replace fuel
pump
Yes
Repair or replace
fuel return pipe
17 Check fuel return pipe to see if it is blocked up or
bent.
No
Replace fuel
pressure regulator
Yes
Go to next step 18 Connect a commutator between ECU and wire
harness and then check Pin 15, 47 and 29 of ECU to
see if there is voltage on them. Check the anode
power wire connecting these pins and the grounding
wire connecting Pin 27 and 28 of ECU to see the
connections are proper.
No
Repair or replace
wire harness
Yes
Repair 19 Check air intake system parts to see if leakage occurs.
No
Go to next step
Yes
Repair or replace20 Check intake manifold absolute pressre sensor and
temperature sensor to see if they are blocked up.
No
Go to next step
Yes
Go to next step 21 Check coolant temperature sensor to see if it works
properly.
No
Repair or replace
Yes
Eliminate
mechanical error
22 Check to see if starting failure is caused by
mechanical errors, such as excessive clearance
between piston and cylinder, or air leakage in
cylinder, etc. (cylinder pressure is fairly low in these
cases).
No
Replace ECU
38
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