Chery A15. Manual — part 28

Specification:

Voltage: 12V

Resistance: 13.8 ~ 15.2Ω± 10%（ on 23°C）

Remark: Force on fuel injector socket in assembly and disassembly must be less

than 120N, or it will influence function.

Caution

·use of a deformed injector retaining clip will cause the injector to not engage

correctly. Always use a new clip when reattaching the injector, otherwise it may
cause the injector to rotate.

F-26

ENGINE ELECTRONIC SYSTEM

INPUT / OUTPUT COMPONENTS OF CONTROL SYSTEM … . … … … …G-2

WORKING MODULE TABLE OF FUEL INJECTION / IGNITION SYSTEM …G-3

WORKING PRINCIPLE … . … … … . . … … … . . … …G-4

ELECTRICAL CONTROL UNIT . . … … … . . … . . G-5

WORKING PRINCIPLE OF ELECTRONIC FUEL INJECTION CONTROL AND

ACTUATORS . . . . . . . . . . . . . . G-7

BASIC PRINCIPLE OF MALFUNCTION DIAGNOSIS FOR ELECTRONIC FUEL

INJECTION SYSTEM . . . . . . . . . . . . G-21

DETAILED TABLE OF MALFUNTION DIAGNOSTIC CODE . . . …G-24

PROCEDURES FOR FAULT DIAGNOSIS ACCORDING TO THE SYMPTOMS OF

THE ENGINE . . . … . . . . . . . . G-62

SAFETY PRECAUTIONS OF SYSTEM MAINTENANCE . . . . …G-88

SAFETY PRECAUTIONS IN DIAGOSIS AND MAINTENANCE OF THE

GASOLINE INJECTION ELECTRONIC CONTROL SYSTEM . . . …G-88

SAFETY MEASURES . . . . . . . . . . . …G-89

G-1

INPUT / OUTPUT COMPONENTS OF CONTROL SYSTEM

19

18

Diagnostic
connector

1

Engine ECU

11 Fuel injector

2

Air pressure / temperature sensor

12 Oxygen sensor (heater)

3

Engine speed sensor for top dead center

13 Fuel pump

4

Throttle valve position sensor

14 Carbon canister solenoid valve

5

Knock sensor

15 Two step speed fan controller

6

Coolant temperature sensor

16 Compressor relay control

7

Oxygen sensor (

λ signal)

17 Idling speed step motor

8

Air condition request

18 Diagnostic connection

9

Ignition coil and spark plugs

19 Relay

10 Instrument

panel

G-2

WORKING MODULE TABLE FOR FUEL INJECTION / IGNITION

SYSTEM

Power supply relay

Power supply

(Power supply +12V)

Power supply

(15/54)

Fuel pump

A/C relay

Idling speed step motor

Malfunction
indicator

Fuel injector

Ignition coil

Carbon canister

solenoid valve

E

ng

in

e

E

N

G

IN

E

Coolant temperature sensor

Throttle valve

position sensor

Line K

Air pressure /

temperature sensor

Knock sensor

·

Cooling temperature

overheat alarm light

·

Decoder alarm light

·

R.P.M. meter

TDC/rotate speed sensor

Heated Oxygen sensor heater

Oxygen sensor heater

Fan relay

G-3