Chery SQR 7160 sedan. Manual — part 1

FOREWORD

SQR 7160 series sedan utilizes the worldwide latest generation MK20-I/E model ABS (Anti-Block System).

Among China’s similar class sedans, Chery sedan is the earliest one that utilizes MK20-I/E ABS system and the sole one

in China who take ABS system as standard equipment. ABS system has following main characteristics:

* 4 channel composite structure in design;

* Small dimension and weight, highly competitive performance and price;

* Safety, reliable and easy to service;

* Has fault information storage function and self-diagnostic connector;

* Non-symmetry redundancy operation mode.

ABS system on SQR7160 class sedan has EDB and ESBS features besides anti-blocking, and also can optionally

install an EDS system.

ABS system on Chery sedan was developed and worked out together with world famous brake system

developmental institution, the OEM provider Continental Teves. Winter road and performance tests were carried out in

Sweden Arvidsjaur Teves Winter Test Field and summer road and performance tests were carried out in China Xianfang

Vehicle Test Feild. Test results indicate Chery ABS system brake efficiency, brake turning ability, brake stability and

subjective appraisal hitting a very high index, multiple performances are much higher than compared vehicles (some

other famous brand sedan of same class in China).

This manual covers ABS system applying precautions, fault diagnostic and service methods, ABS system removing

& installing procedures, detailed scan tool-operating information, fault with and without code diagnostic chart, for the

user’s convenience of accurate-quick checking, diagnosing and repairing.

Driver, vehicle & motor service mechanic and skilled worker, after-sale service staff and technical engineer can use

this manual for job convenience.

Under any cases, data, chart and explanation information in this manual cannot be legally rested on for any

requirements to our company.

We keep the right of making amendment to this manual. Any necessary amendment will not separately be informed

and kindly appreciate for your understanding.

Product Department of Chery Automobile Com., Ltd (CAC)

October 2003.

········································································································································

·········································································································································

······························································································

···············································································································································

·················································································································

·····················································································································································

·······································································································································

····················································································································································

····························································································································

·························································································································

········································································································································

···········································································································································

·······································································································································

··························································································································································

·······································································································································

··················································································································

··············································································································

························································································································································

····························································································································································

···························································································································

······················································································································

·················································································································································

·············································································································································

······························································································

··············································································································································

··········································································································································

·······················································································································

···············································································································

··············································································································

·············································································································································

··············································································································································

···························································································································

··················································································································································

·······································································································································

CONTENT

1. Fault Diagnostic Flow Chart

(1)

2. Fault Diagnostic Precaution

(2)

3. Scan Tool Operating Method and Function Introduction

(3)

3.1Operating Method

(3)

3.2 Brief Introduction On Function Code

(3)

3.3 Function Key

(3)

4. Intermittent Fault Diagnostic

(4)

5. MK 20 ABS System

(5)

5.1 Checking ABS Warning Light

(5)

5.2 Reading Condition Information

(5)

5.3 Retrieving Fault Code

(5)

5.4 Clearing Fault Code

(5)

5.5 Displaying Fault Code

(5)

6. HCU Diagnostic

(6)

7. Quick Fault Repairing Index

(7)

7.1 Fault With Code Check Chart Index

(7)

7.2 Fault Without Code Check Chart Index

(7)

8. ABS ECU Socket

(8)

9. Electric Circuit

(9)

10. Fault With Code Diagnostic Chart

(10)

11. Fault Without Code Diagnostic Chart

(17)

12. ABS System Check

(23)

13. ABS Operation Check

(25)

13.1 Checking Wheel Speed Sensor Output Voltage

(25)

13.2 Checking HCU

(25)

14. Removing and Installing

(26)

14.1 Spare Parts Supplying Method

(26)

14.2 Removing and Installing Precaution

(26)

14. Removing 3MK 20 HECU Assembly

(26)

14.4 Replacing HCU

(27)

14.5 Replacing ECU

(27)

14.6 Reinstalling ABS Assembly

(27)

15. ECU Programming

(28)

16. Filling Fluid and Bleeding

(29)

································································································

16.1 Dry HCU. . . . . . . . . . . . . . ...(29)
16.2 Oil Carried HECU. . . . . . . . . . . . ….(29)
Attachment I ABS FAQ. . . . . . . . . . . . … (31)
Attachment II Precautions on using ABS

(32)

nostic Chart