Maintenance Manual for Chery·Windcloud Marelli EFI System
3). Vehicle warm starting is difficult
Step Operation Result Solution
Yes Eliminate failure
displayed
1 Set ignition switch in “ON”. Check with scanner
to see if there is failure information record.
No Go to next step
Yes Go to next step 2 Connect fuel pressure gauge valve. Strap the 30#
and 87# pins of fuel pump relay to make fuel
pump work, and then check if fuel pressure is at
about 350kPa.
No Go to step 9
Yes Go to next step 3 Disconnect fuel pipe and shut down ignition
switch to see if the pressure of fuel system can
maintain between 250-300kPa an hour later.
No Repair fuel system
leakage
Yes Replace fuel
pressure regulator
or fuel pump
4 Connect fuel pipe and intercept fuel return pipe
with the interceptor, and at the same time, shut
down fuel pressure gauge valve. Also shut down
ignition switch to see if the pressure of fuel system
can maintain between 250-300kPa an hour later.
No Go to next step
Yes Replace injector
and fuel pipe
5 Check if fuel leakage occurs in injector and fuel
pipe.
No Go to next step
Yes Check coolant
temperature and
lines
6 Unplug water temperature sensor connector and
make engine start. Check to see if the starting is
successful.
No Go to next step
Yes Go to next step 7 Connect commutator between ECU and wire
harness. Check if there are voltages on ECU’s
15#, 29# and 47# pins, and then check if the anode
power line connecting the aforesaid ECU pins and
ground wire connecting ECU’s 27#, 28# pins are
in good condition.
No Repair or replace
wire harness
Yes Finish 8 Replace fuel, and carry out warm starting again to
see if successful.
No Replace ECU
Yes Go to next step 9 Check if fuel pipe is blocked up or bent, and if
fuel pump pressure regulating valve is working in
good order.
No Repair or replace
Yes Go to next step 10 Check with multimeter to see if there is
accumulator voltage on both terminals of socket
connector of fuel pump.
No Repair or replace
fuel pump relay and
leads
Yes Go to next step 11 Check with multimeter to see if the resistance
valve of fuel pump is correct.
No Replace fuel pump
Yes Replace fuel pump 12 Check if fuel pump is stuck.
No Replace ECU
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