Chery A11. Manual — part 130

Chery SQR7160 series sedan ABS system－fault diagnostic and repairing

8. ABS ECU SOCKET

8

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

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Chery SQR7160 series sedan ABS system－fault diagnostic and repairing

Chery SQR7160 series sedan ABS system－fault diagnostic and repairing

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

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Chery SQR7160 series sedan ABS system－fault diagnostic and repairing