Chery SQR 7160 sedan. Manual - part 4

 

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Chery SQR 7160 sedan. Manual - part 4

 

 

 

 

 

 

9. ELECTRICAL CIRCUIT 

MK20-I/EABS，EDS And ASR Electrical Circuit 

 

PIN 

ECU

Valve coil(EDS) 

Only for ABS 

Pin 8,9,21,25:4.8mm width 

Other pins:1.5mm width 

9 

 

 

 

10. FAULT W/CODE DIAGNOSTIC CHART 

1 

Code 01276 

Possible causes 

［Note］After vehicle speed is over 20 KM/H, code will be set when ABS 

ECU detect motor operate incorrectly.   

［Method］This code may be set for loose or disconnected wiring harness 

between motor and ECU. Perform code test by actuating motor using 

HYDRAULIC UNIT FUNCTION TEST on scan tool. 

●  short to power or ground 

●  loose engine wiring hareness 

● defective motor 

 

Note： 

If battery is over discharged, motor actuating will fail. Check if battery voltage is normal before motor actuating test. 

Perform motor actuating test when vehicle is staionary.   

 

Disconnect motor harness connector,     

Connect power directly to motor connector. 

Does motor operate?   

NO 

Replace hydraulic controlled unit. 

YES

NO 

Replace fuse or harness. 

Check fuse and ABS ECU connector 

Connect motor harness. 

Turn ignition to ON position. 

Clear fault codes. 

Perform hydraulic controlled unit test using scan tool.

YES

YES

Replace ECU 

Does problem occur again? 

NO

Go to INTERMITTENT FAULT DIAGNOSTIC

10 

 

 

 

 

 

 

 

2 

Code 00283，00285，00290，00287 Possible 

causes 

［Note］  When no open circuit detected, code will be set if no signal output 

after vehicle over 20km/h. 

［Method］  Code may be set for uninstalled sensor, sensor coil or harness 

short, big gap between sensor and gear ring, uninstalled or defective gear ring. 

●  Sensor not installed 

● Short in sensor coil or harness 

short. 

● Big gap between sensor and gear 

ring. 

●  Gear ring not installed 

● Defective ABS ECU. 

 

 

 

456

 

 

 

 

 

 

 

Sensor installed correctly? 

NO 

Reinstall the sensor 

Check sensor output voltage

YES

Normal

Replace ABS ECU

Not okay

Check each sensor 

Not okay 

Replace  

Okay 

Check each sensor gear ring 

Not okay 

Relpace 

Normal

Check wheel bearing gap 

Not okay 

Repair or replace 

Okay 

Check wiring harness sensor

and ABS ECU   

11 

 

 

 

3 Code 

00283，00285，00290，00287 Possible 

causes 

［Note］When vehicle speed is over 20km/h，code will be set if sensor signal 

is not within the gap specification.   

［Method］Code may be set for sensor coil or wiring harness intermittent 

poor contact or short, weak sensor signal caused by big gap between sensor 

and gear ring or defective gear ring teeth.. 

● sensor coil harness intermittent 

poor contact or short. 

●big or small air gap between sensor 

and gear ring 

●damaged gear ring teeth 

big bearing gap 

defective ABS ECU 

 

 

 

Reinstall sensor 

NO

Sensor installed correctly? 

YES

Replace 

Not normal

Not normal

Check sensor output voltage

Check each wheel sensor 

Normal

Not normal 

Replace 

Check each wheel sensor gear ring

Normal 

Replace ABS ECU 

Normal

Not Normal 

Repair or replace 

Check wheel bearing gap

Normal 

Check wiring harness between

sensor and ABS ECU 

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