Content .. 82 83 84 85 ..

Chery A series. Manual - part 84

Abnormal

Replace the hydraulic control unit

Normal

Abnormal

Replace the fuse or harness

Normal

Replace the electronic control unit

Refer to the “Repair Details

of Random Failure”

Pull out the harness
connector the motor,
directly connect the battery
supply to the battery
terminals and check whether
the motor operate normally.

Check the fuses and ABS

ECU connections

Connect the motor harness

Turn the ignition switch to “ON”

Clear the DTC

Use the diagnostic tester to conduct the

hydraulic control unit diagnosis

WHEEL SPEED SENSORS: 00283, 00285, 00290, 00287

Possible Cause

2. The DTCs are 00283, 00285, 00290, 00287
[Description] The DTCs will appear when the

open circuit can't be detected and
there is no signal output yet if the
vehicle speed reaches 20 km/h or
more.

[Hint] It may be caused due to the sensor

neglected to be installed, sensor coil
or harness short-circuited, excessive
clearance between the sensor and
gear ring, or the gear damaged. The
foreign materials between the wheel
speed sensor and gear ring may cause
the clearance undersized.

*    Sensor neglected to be
installed
*    Sensor coil or harness short
circuited
*    Excessive air clearance

between the sensor and gear
ring

* Gear ring neglected to be

installed

* ABS ECU failure

Whether the failure reoccurs or not

Yes

P-30

Install it normally

Yes

Abnormal

Normal

Replace the ABS ECU

Sensor is installed

normally or not?

Check all sensor gear

rings

Check the wheel

bearing clearance

Check every sensor

Check the harness between

the sensor and ABS ECU

Abnormal

Repair or replace

Replace

Check the sensor’s output voltage

at the ABS pin 25# plug

Replace

Abnormal

P-31

Speed sensor

Possible Cause

3. The DTCs are 00283, 00285, 00290, 00287

[Description] When the vehicle speed > 20 km/h, the

DTCs will appear if the sensor signal exceeds

the tolerance range.

[Hint] It is very possible that the too feeble signals from

sensor are caused due to the intermittent poor

contact or short circuit between sensor coil or

harness, the gear ring damaged, or the excessive

air clearance between the sensor and gear ring.

* Poor contact or short circuit

between the sensor coil or

harness

* Excessive or undersized air

clearance between the sensor

and gear ring

* Gear ring damaged

* ABS ECU failure

Abnormal

Install it normally

Correct

Abnormal

Check the sensor output voltage at

ABS pin 25# plug

Replace the ABS ECU

Normal

Check wheel bearing

clearance

Check the harness between the

sensor and ABS ECU

Sensor is installed

normally or not?

Check all sensor gear

rings

Check all wheel sensor gear

rings

Replace

Repair or replace

Abnormal

Normal

P-32

Speed sensor

Possible Cause

4. The DTCs are 00283, 00285, 00290, 00287

[Description] The DTCs will appear when the

sensor has the recognizable open circuit,

short circuit and other failures.

[Hint] It may be caused due to the poor contact of

sensor, the short circuit of coil or harness,

or the failure of sensor signal processing

circuit in the ABS ECU.

* Open circuit of sensor connector

* Short circuit of sensor

* Short circuit between the sensor

connection or harness with the

counter-earth or power supply

* ABS ECU sensor signal

processing circuit failure

Check the sensor of any wheel

Normal

Abnormal

Yes

Normal

Replace ABS ECU

Remove the ABS

ECU connector, and

check whether the

resistances between

the following

terminals of ABS

ECU conform to the

standard values?

Standard value: 1.0

to 1.3 k

Measure the

resistances, and, at

the same time,

swing the sensor

harness and

connector.

MK20I/E

FL: 1 to 2

FR: 19 to 20

RL: 5 to 6

RR: 22 to 23

Check the

related sensor

connector

The failure

reoccurs or not?

Refer to the

“Repair

Details of

Random

Failure”

Check the electrical

wirbetween the ABS ECU

and sensores

Repair the connector

Normal

P-33

Content .. 82 83 84 85 ..