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
12
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