Chery A18. Manual — part 88

131

II. Main plug-in units explanation

Name of plug-in unit

Pin No.

Origin

1

Main relay

Plug-in unit of carbon tank electromagnetic valve

2

ECU

1

ECU

2

Pressure sensor

Plug-in unit of throttle position

3

ECU

1

ECU

2

ECU

3

ECU

Plug-in unit of stepper motor

4

ECU

1

Main relay

Plug-in unit of the nozzle 1

2

Main relay

1

Main relay

Plug-in unit of the nozzle 2

2

ECU

1

Main relay

Plug-in unit of the nozzle 3

2

ECU

1

Main relay

Plug-in unit of the nozzle 4

2

ECU

1

ECU

2

ECU

Shock sensor

3

—

1

ECU

2

ECU

3

ECU

Pressure sensor

4

ECU

1

ECU

2

ECU

Rotation speed sensor

3

—

1

Main relay

2

ECU

Phrase sensor

3

ECU

1

ECU

2

ECU

3

ECU

Ignition

4

—

1

Main relay

2

ECU

3

ECU

Oxygen sensor (2)

4

ECU

Main relay

1

132

2

Main relay

3

—

4

Main relay

5

—

6

Accumulator anode

7

—

8

Fuse

9

—

1

—

2

Fuse

3

—

4

ECU

5

—

6

Main relay

7

—

8

Plug-in unit of the fuel pump & A/C

Fuel pump relay

9

—

1

Main relay

15A fuse

2

Fuel pump relay

1

Accumulator anode

30A fuse

2

Main relay

1

Accumulator anode

7.5A fuse

2

ECU

1

plug-in unit if the machine fuel pressure

2

ECU

3

Plug-in against theft & of the speed signal

4

Plug-in against theft & of the speed signal

5

ECU

6

ECU

7

ECU

8

ECU

9

ECU

10

ECU

11

Plug-in unit of the fuel pump & A/C

12

Plug-in unit of the fuel pump & A/C

13

ECU

14

Plug-in unit of the fuel pump & A/C

15

Plug-in unit of the fuel pump & A/C

Interface plug

16

—

133

III. Disassembly & assembly of the engine wiring harness

Part No.：A18-3724180BA

(I).Preparation

Tools：

Socket wrench 10#, Phillips screwdriver, slotted screwdriver

(II).Attention

Firstly cutting the power is a must before disassemble

electric components & wiring harness.

The ignition switch must be in a close state.

(III).

Disassembly steps

3.1. Please open the front compartment firstly

3.2. Disassemble the connecting wire with the

positive electrode of the accumulator with the

wrench 10#

3.3. Please disassemble ECU protective cover and

take out the plug-in unit with ECU

3.4. Please take out the plug-in unit with the pressure

sensor or the air intake

134

3.5. Take out the plug-in unit with the stepper motor

3.6. Take out the plug-in unit with the throttle

3.7. Take out the plug-in unit with the ignition coil

3.8. Take out the plug-in unit with the phase sensor

3.9. Take out the plug-in unit with the cooling

temperature sensor