Chery A15. Manual — part 222

Chery A15 Maintenance Manual

(4). Replacing HCU

. Press down the locking pin on connection side to take

off pump moter wire harness;

. Remove the four bolts shown in the figure, and do not

reuse them;

. Separate HCU from ECU;

. Fit a new HCU onto ECU;

. Fix ECU on HCU with new bolts, tightening torque: 3+1Nm;

. Properly connect motor wire harness with locking pin at position.

(5). Replacing ECU

. Press down the locking pin on connection side to take

off wire harness;

. Remove the four bolts shown in the figure and

discard them;

. Separate HCU from ECU;

. Fit a new ECU onto HCU;

. Fix ECU on HCU with new bolts, tightening torque:

3+1Nm;

. Properly connect motor wire harness with locking pin at position.

(6). Reassemble ABS Assembly

Note: Remove the upper hydraulic outlet plug of ABS

4

2
3

1

B

A

assembly only when brake rigid tubes are to be

assembled to prevent foreign matters from entering

brake system.

. Fix ABS assembly on bracket, tightening torque:

20+4Nm;

. Remove hydraulic outlet plug and properly assemble

A Front piston B Rear piston
1 Front right 2 Rear left
3 Rear right 4 Front left

brake rigid tubes;

. Mount brake rigid tubes of master valve;

. Tightening torque of brake rigid tubes: 12+4Nm, M10×1 and 15+3Nm M12×1;

Chery A15 Maintenance Manual

. Add new brake fluid into fluid tank until MAX level is reached, and then exhaust air

as required;

. Turn ignition switch to ON, ABS warning light will be turned on for 1.7 seconds and

then goes out;

. Clear fault code memory and read again to see if any fault code is displayed;

. Finally confirm ABS performance in road test, a rebound shall be felt at brake pedal.

XI. ABS ECU Socket

Chery A15 Maintenance Manual

XII. Circuit Diagram MK20 I/E

2

1

16

4

16

7

4

5

6

7

25

20

19

23

8

9

24

14

22

12

18

30A

S5
3

1

2

1

30A

2

S5
4

30

15

X

31

至电瓶侧
60A保险丝

6.0红

C118-1

C118-3

C118-2

C118-4

右
后
轮
车
速
传
感
器

右
前
轮
车
速
传
感
器

左
后
轮
车
速
传
感
器

左
前
轮
车
速
传
感
器

黑0.5

绿0.5

兰0.5

棕0.5

黑0.5

棕0.5

绿0.5

黑0.5

棕
2.0

棕
2.0

红
2.0

红
2.0

棕/黑
0.5

红/白
0.5

白/黑
0.5

黑
0.5

红/白
0.5

灰/黑
0.5

至
仪
表
ABS
灯

至制动开关

31

A1

FS
22
10A

诊断座

至电瓶侧

60A保险丝

To battery 60A fuse

黑

Black

至制动开关

To brake switch

白

White

诊断座

Diagnose

socket

红

Red

至仪表

ABS灯

To ABS light on dashboard

棕

Brown

左前轮车速传感器

Front left wheel speed sensor

灰

Gray

左后轮车速传感器

Rear left wheel speed sensor

兰

Blue

右前轮车速传感器

Front right wheel speed sensor

绿

Green

右后轮车速传感器

Rear right wheel speed sensor

Chery A15 Maintenance Manual

XIII. ECU Coding

When replacing HECU or ECU, the new ECU shall be coded, otherwise ABS

warning light will flash and the system will not be able to work normally.

Follow the steps to code the new ECU with original diagnoser:

Select “Universal OBD-16 Diagnose Adapter”

Select “CU coding” in function options

“Enter a new code_ _ _ _ _”

(Code for this vehicle is 01901)

Press “OK”, the screen will display:

1J0907379 P ABS 20 IE CAN

001

coding: 01901

WSC: 000001

Coding finished, exit

Connect diagnoser to diagnose socket

XIV. Adding Brake Fluid and Exhausting Air

(1). Wet HCU

For wet spare HCU, add brake fluid and exhaust air as per conventional brake system

after replacement.

(2). Dry HECU

For dry spare HECU, add brake fluid and exhaust air as per conventional brake

system and then exhaust the air in the second HECU circuit after replacement.