Chery A11 2003 Repair Manual page 766

Maintenance Manual for Chery · Windcloud
3). Vehicle warm starting is difficult
Step Operation
1 Set ignition switch in "ON". Check with scanner
to see if there is failure information record.
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.
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.
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.
5 Check if fuel leakage occurs in injector and fuel
pipe.
6 Unplug water temperature sensor connector and
make engine start. Check to see if the starting is
successful.
7 Connect commutator between ECU and wire
harness. Check if there are voltages on ECU's
44#, 45#, 63#, 12# and 13# pins, and then check if
the anode power line connecting the aforesaid
ECU pins and ground wire connecting ECU's 3#,
51#, 53#, 61# and 80# pins are in good condition.
8 Replace fuel, and carry out warm starting again to
see if successful.
9 Check if fuel pipe is blocked up or bent, and if
fuel pump pressure regulating valve is working in
good order.
10 Check with multimeter to see if there is
accumulator voltage on both terminals of socket
connector of fuel pump.
11 Check with multimeter to see if the resistance
valve of fuel pump is correct.
12 Check if fuel pump is stuck.
M7.9.7 EFI System
Result Solution
Yes Eliminate
displayed
No Go to next step
Yes Go to next step
No Go to step 9
Yes Go to next step
No Repair fuel system
leakage
Yes Replace
pressure regulator
No Go to next step
Yes Replace
and fuel pipe
No Go to next step
Yes Check
temperature
lines
No Go to next step
Yes Go to next step
No Repair or replace
wire harness
Yes Finish
No Replace ECU
Yes Go to next step
No Repair or replace
Yes Go to next step
No Repair or replace
fuel pump relay and
leads
Yes Go to next step
No Replace fuel pump
Yes Replace fuel pump
No Replace ECU
failure
fuel
injector
coolant
and
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