Chery SQR 7160 sedan. Manual — part 122

4.6 engines often stalls

Check step motor fault

1 check mount screw

2 short time vibration

should be felt when

ignition switch turned

on

1 repair or replace step motor

2 check step motor wire

3 replace or turn idle motor

mount screw

Check throttle position

sensor

Throttle position sensor and its

connection, repair or replace as

necessary.

Check throttle valve

gap; warm engine to

80℃, let engine idle,

cut off A/C. Use scan

tester to detect motor

steps. The total steps is

20-30.

1 If steps is not within

specification, adjust the initial

angle of throttle valve, ensuring a

correct total steps.

2 If there exists carbon or tar

deposits, please remove it.

Note: If reliable tool for testing

total idle steps is not available,

DO NOT adjust initial throttle

angle.

Watch each cylinder

firing check and ensure

spark plug and plug gap

is 8mm.

NOTE: Measure

compression pressure

and air valve gap

1 replace spark plug

2 cylinder compression pressure

3 valve gap

Check air intake

manifold pressure

sensor

Check air intake pressure sensor

and wire, repair or replace as

necessary .

Check circuit

connection

1 ECU voltage supply

fusible link

fuse

2 circuit wire test: using voltmeter

or ohmmeter measure voltage or

resistance

★ If engine stalls, check following components:

Air system leakage check

Ignition system fault check

Fuel circuit pressure, fuel injector, and fuel pump check

Engine compression pressure check

Fuel pum

p r

elay (

b

lack)

Multi-port fuel injection
-ECU wiring harness

ECU

module connector

E

C

U

m

o

d

u

le

c

o

n

n

ec

to

r B (black)

A1

1-372466ba

ECU

p

ower

f

u

se

(black

)

F

ue

l pum

p

fuse

(b

lac

k)

Diag

no

s

fuel pump

d

A/

C c

en

tr

a

l

connector

Gr

ou

Spa

O

xyge

n

senso

r

(pale)

Centr

al

Rota

ti

knock sensor

Centr

a

Engine Theory Diagram

S

te

p

INJECT

O

R

1

(b

la

ck

)

T

h

ro

ttl

e

o

si

tio

n

se

n

so

r

IN

JE

C

T

O

S

en

so

IN

JE

C

T

O

R

W
a

te

r

te

m

p

er

a

tu

C

en

tr

al

G

r

C

en

tr

al

Ig

n

iti

o

n

co

il

INJECT

O

R

4

(b

la

ck

)