Chery B11. Manual — part 97

Step Diagnostic

action

Expected
value

Yes No

1

If the checking of diagnostic circuit has been finished

To Step
2

To Step
12

2

1. Shut off engine
2. Check if the front left wheel speed sensor,
straddling wire harness and gear ring suffers any
physical damage.
Is there any physical damage?

To Step
13

To Step 3

3

Is DTC C0032 to be set as a current or historic code?

To Step
14

To Step 4

4

1. Connect the scanning device and select the data list
2. Monitor wheel speed sensor
3. Trial run the car at a speed of 24km/h (15mile/h)
and then gradually lower the car speed to zero. Repeat
it for a couple of times.
Is C0021 reset or if the front left wheel speed
suddenly lowers to zero before the car fully stops?

To Step
5

To Step
15

5

1. Shut off engine
2. Lift and properly support the car.
3. Detach the EBCM wire harness from the EBCM
4. Connect a voltmeter to the EBCM wire harness
Terminals A09 and A10.
5. Select AC mV scale
6. Rotate the front left wheel while observing the
voltmeter (the voltage shall increase with the speed
increase)
Is the AC voltage within the range required?

At least
100mA

To Step
16

To Step 6

6

1. Detach the front left wire harness from the front left
wheel speed sensor.
2. Connect the ohmmeter to the front left wheel speed
sensor terminals A and B.
Is the resistance within the range required?

800-
1,600ohm
(resistance
will increase
with
temperature
rise

To Step
7

To Step
17

7

1. Front left straddling wire harness still remains detached
from the front left wheel speed sensor.

At
least

To
Step 8

To Step 17

2. Connect the ohmmeter to the front left wheel speed
sensor terminals A and B.
3. Select AC mV scale.
4. Rotate the front left wheel while observing the voltmeter
(the voltage shall increase with the speed increase)
Is the AC voltage within the range required?

100m
V

8

1. Detach the front left straddling wire harness from the
ABS car body wire harness.
2. EBCM wire harness remains detached from the EBCM.
3. Connect an ohmmeter to the EBCM terminals A09 and
A10.
Is the resistance within the range required?

OL
open
circuit

To
Step 9

To Step 18

9

1. EBCM wire harness remains detached from the EBCM.
2. Front left straddling wire harness remains detached from
the ABS car body wire harness.
3. Connect an ohmmeter to the EBCM terminal A09 and
then to the ABS car body wire harness terminal A.
Is the resistance within the range required?

Less
than
2ohm

To
Step
10

To Step 19

10

1. EBCM wire harness remains detached from the EBCM.
2. Front left straddling front left wire harness remains
detached from the ABS car body wire harness.
3. Connect an ohmmeter to the EBCM terminal A10 and
then to the ABS car body wire harness terminal B.
Is the resistance within the range required?

Less
than
2ohm

To
Step
11

To Step 20

11

1. Replace front left wheel speed sensor straddling wire
harness.
2. Trial run the car at various speeds on various road
surfaces.
Is C0021 reset?

To
Step
16

Car
maintenance

12

Check the diagnostic circuit before the test is carried out.

13

Repair the front left wheel speed sensor, straddling wire
harness and/or damaged ring with gear rings.

14

Diagnose DTC C0032 before carrying out the steps in the
table

15

DTC C0021 is intermittent. Refer to “Assistance to
troubleshooting”.

16

Replace the EBCM.

17

Replace the front left wheel speed sensor

18

Identify and repair the short circuit between two circuits.

19

Repair the open circuit or high resistance between
terminals A09 and A.

20

Repair the open circuit or high resistance between
terminals A10 and B.

Five. C0022 front right wheel speed sensor input signal = 0

Wheel speed sensor

Straddling
wire

Car body wire harness

Gear
ring

1. Description of circuit
The wheel speed sensor will create an
AC voltage that increases with the
increase of wheel speed. EBCM then
calculates the wheel speed on the basis
of the AC signal frequency. The speed
sensor is connected to the EBCM by a
twisted pair which can reduce the noise
vulnerability of troubleshooting codes.

2. Conditions for setup of
troubleshooting codes
The following conditions will have to be
met for the setup of C0022:
(1) C0032, C0033, C0034 or C0035 is
not current.
(2) ABS does not work.
(3) Braking switch is on.
(4) Front right wheel speed is 0, and the
speeds of other wheels are bigger than
8km/h (5mile/h) for at least 2.5 seconds.

3. Actions to be taken for setup of
troubleshooting codes
(1) The electromagnetic relay is turned
off and pump motor and solenoid are
disconnected with the power source.
(2) Save DTC C0022.
(3) ABS is disabled and ABS alarm
lamp is on.

4. Conditions for clearing
troubleshooting codes

(1) If the conditions for setting up
troubleshooting code C0022 are gone,
corresponding scanning tools can be
used to clear the troubleshooting code.
(2) If the troubleshooting code does not
appear for 100 driving cycles running, it
can be eliminated from the database.

5. Assistance to troubleshooting
In the case of any interrupted
troubleshooting code, please thoroughly
check the wiring and connectors, which
shall include:
(1) Unfix guard pipes and check if the
wiring is damaged, short circuited and
polluted.
(2) Check if the terminals are deformed
and/or damaged.
(3) Check the contact (fastness) of
terminals by the spare male/female
terminals.
(4) Check if the wire terminals are
correct by unfixing terminals from the
connector.
If the driver complains that the ABS
alarm lamp only illuminates when there
is a change in environment moisture
(rain, snow and car washing), please
thoroughly check if any wheel speed
sensor is soaked. If the troubleshooting
code is not current, then simulate the
impact of water soaking. Follow the
following steps: spray 5% brine on

suspected area. Then trial run the car at a
speed of over 24km/h (15m/h) on
various road surfaces (e.g. bumpy or
curved road, etc). If any troubleshooting
code appears, then replace the suspected
wire harness and/or sensor.
Make sure that the car is under room
temperature when measuring wheel

speed sensor resistance as the resistance
will increase with temperature rise.
Any failure in carefully and thoroughly
following the above steps will possibly
result in wrong diagnosis, unnecessary
component replacement and
reoccurrence of DTC C0022.

6. Diagnostic steps