Chery S11 / Chery QQ. Manual — part 231

Chery QQ Maintenance Manual 465 EFI System

Mix self-study addition
factor of injector is over

e upper limit for each

stroke

th

11 Self-study

for

injection time
addition of
O2S
closed-loop
control

Mix self-study addition
factor of injector is
below the lower limit for
each stroke

Non 35

Mix self-adapt
addition factor
of injector is
between the
upper limit and
lower limit

Mix self-study
multiplication factor of
injector is over the upper

for malfunction

identification

limit

12 Self-study

for

injection time
multiplication
of O2S
closed-loop
control

Mix self-study
multiplication factor of
injector is below the
lower limit for
malfunction
identification

Non 36

Mix self-adapt
multiplication
factor of
injector is
between the
upper limit and
lower limit

Mix self-study addition

tor of leaked air is

er the upper limit for

malfunction
identification

fac
ov

13 Self-study

for

leaked air
addition of
O2S
closed-loop
control

Mix self-study addition
factor of leaked air is
below the lower limit for
malfunction
identification

Non

37

Mix self-adapt
addition factor
of leaked air is
between the
upper limit and
lower limit

Battery voltage is over
the trustable upper limit

14

Battery
voltage is nort
trustable

In non-start working
condition, the battery
voltage is below the gate
value. The lasted time is
over permitted lasting
time of voltage dropping
after starting.

Close O2S closed-loop
control self-study and idle
control air self-study, and the
last data is effective.

38

Battery voltage
resumes to
normal value

21

Chery QQ Maintenance Manual 465 EFI System

Engine RPM is over the

gate value for

identifying speed
malfunction. Load signal
( mass flow for each
turn) is over the load
gate value for
identifying speed
malfunction. Speed
signal is below lower
limit for identifying
speed malfunction.
Above 3 conditions
lasting time is over the
lasting time for
identifying speed
malfunction.

lowest

Engine RPM is
over the lowest
gate value for
identifying
speed
malfunction.
Load signal
( mass flow for
each turn) is
below the load
gate value for
identifying
speed
malfunction.
Speed signal is
not below lower
limit for
identifying
speed
malfunction.

15 Speed

signal

is not
trustable

Speed signal is over
upper limit for
identifying speed
malfunction. It’s lasting
time is over the lasting
time for identifying
speed malfunction.

Make speed =substitute for
non-trustable speed

41

Engine RPM is
over the lowest
gate value for
identifying
speed
malfunction.
Load signal
( mass flow for
each turn) is
below the load
gate value for
identifying
speed
malfunction.
Speed signal is
not below lower
limit for
identifying
speed
malfunction.

16

Short to battery voltage

Non

42

Eliminate

22

Chery QQ Maintenance Manual 465 EFI System

Short to ground

Eliminate

Fan

relay

malfunction

Open circuit

Eliminate

No TDC mark
malfunction, and no
activating phase sensor,
camshaft RPM reaches a
certain value

17

CYL
identification
signal is not
trustable

No TDC mark
malfunction, and the
time of phase signal is
over set value.

Forbid to trigger cylinder
number accounter:
If load signal( mass flow for
each turn) is over gate value
for knock control, and engine
temp is over gate value for
actuating knock control, the
ignition will put off a safety
angle for knock control.

43

Under the
condition of
correct signal,
RPM of
crankshaft
exceeds a set
value.

Short to ground

Elimilate

Short to Battery

Elimilate

18

MIL driver
malfunction

Open circuit

Non 45

Elimilate

Short to ground

Elimilate

Short to Battery

Elimilate

Open circuit

Elimilate

19

Idle actuator
EWD3 and
step motor
driver
malfunction

load short

No substitute
Close idle closed-loop
control feature curv
self-study and air self-study
function, and the last data is
effective.
Make feature curve
self-study=EPROM value.

EWD
3 and
No1.
driver
61 of
step
motor
,
No2.
driver
of
step
motor

Elimilate

The steps for diagnosis according to malfunction information record

DTC 13 A/C evaporator outlet temperature sensor

23

Chery QQ Maintenance Manual 465 EFI System

The diagram for A/C evaporator temperature sensor

No. Operation

steps Test

results

Next step

1

“ON”.Turn on ignition key.

Next

Yes Next

2

Pull out connector of A/C evaporator temperature

sensor, measure if the volt between 2 pins is 5V

with multimeter.

No 4

Yes Replace

sensor

3

Check any open or short between 2 pins with

multimeter.

No Replace

ECU

Yes

Repair or replace

harness

4

ECU and harness, check any open or short

between pin 30 , 39 of ECU and pin (1) and (2) of

sensor with multimeter.

No Replace

ECU

24