Chery B11. Manual — part 103

2. Monitor wheel speed sensor
3. Trial run the car until the setup speed upper
limit is reached; then gradually slow down the
car to zero speed. Repeat the steps several times.
Is C0028 reset or does the rear right wheel speed
variation exceed 5km/h (3 mile/h) during driving
if compared with the speed of any other wheel?

Step 6

6

1. Park the car
2. Lift and properly support the car.
3. Detach the rear right straddling wire harness
from the rear right wheel speed sensor.
4. Connect the ohmmeter to the rear right 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. The car speed sensor is still detached from the
straddling wire harness.
2. Connect the ohmmeter to the rear right wheel
speed sensor terminals A and B.
3. Select AC mV scale.
4. Rotate the rear right wheel while observing
the voltmeter.
Is the AC voltage within the range required?

At least
100mV

To
Step 8

To Step 17

8

1. Detach the EBCM wire harness from the
EBCM.
2. Detach the rear right straddling wire harness
from the ABS car body wire harness.
3. Connect an ohmmeter to the EBCM terminal
A05 and then to the ABS car body wire harness
terminal A.
Is the resistance within the range required?

Less than
2ohm

To
Step 9

To Step 18

9

1. EBCM wire harness remains detached from
the EBCM.
2. Straddling wire harness remains detached
from the car body wire harness.
3. Connect an ohmmeter to the EBCM terminal
A06 and then to the ABS car body wire harness
terminal B.
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. Straddling wire harness remains detached
from the car body wire harness.
3. Connect an ohmmeter to the EBCM terminals
A05 and A06.
Is the resistance within the range required?

OL open
circuit

To
Step
11

To Step 20

11

1. Replace rear right straddling wire harness.
2. Trial run the car at various speeds on various
road surfaces.
Is C0028 reset?

To

Step
21

Car
maintenance

12

Check the diagnostic circuit before making the
DTC0028 fault table.

13

Prepare C0035 diagnostic chart before making
the DTC0028 fault table.

14

Repair damage to the rear right wheel speed
sensor, straddling wire harness and/or gear ring.

15

The cause of C0028 is the noise of ignition
switch coupled to the rear right wheel speed
sensor.
Check if there is any potential source of ignition
noise for rear right ABS card body wire harness
and/or straddling wire harness, like spark plug
wire, etc. Rearrange the wire as the case may
require.

16

DTC C0028 is intermittent. Refer to “Assistance
to troubleshooting”.

17

Replace the rear right wheel speed sensor.

18

Repair the open circuit or high resistance
between terminals A05 and A.

19

Repair the open circuit or high resistance
between terminals A06 and B.

20

Repair the short circuit between two wires.

21

Replace the EBCM.

Twelve. C0032 Open circuit or short circuit of front left wheel speed sensor

Straddling
wire

Wheel speed sensor

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

DTC C0032 may be modulated when the
key is on and the EBCM has detected that
there is open circuit or ground fault in the
front left wheel speed sensor circuit or its
short circuit with the storage battery.

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 C0032.
(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 C0032 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.
Check any gear ring carefully to find if
there is any crack or tooth damage. If the
troubleshooting code is set up at the same
speed of each driving cycle, then the gear
ring is highly possible to have been
damaged.
Any failure in carefully and thoroughly
following the above steps will possibly
result in wrong diagnosis, unnecessary
component replacement and reoccurrence
of DTC C0032.

6. Diagnostic steps

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 suffer any
physical damage?
Is there any physical damage?

To

Step
15

To Step 3

3

Trial run the car at various speeds on various
road surfaces.

To

Step 4

To Step 16

Is C0032 reset?

4

1. Park the car
2. Lift and properly support the car.
3. Detach the front left straddling wire harness
from the front left wheel speed sensor.
4. 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 5

To Step 17

5

1. Front left straddling wire harness still remains
detached from the speed sensor.
2. Connect the ohmmeter to terminal A of front
left wheel speed sensor and then to the car body
for grounding.
Is the resistance within the range required?

OL (open
circuit)

To
Step 6

To Step 17

6

1. Detach the EBCM wire harness from the
EBCM.
2. Detach the front left straddling wire harness
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 7

To Step 18

7

1. EBCM wire harness remains detached from
the EBCM.
2. Front left straddling wire harness still 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 8

To Step 19

8

1. EBCM wire harness remains detached from
the EBCM.
2. Front left straddling wire harness still remains
detached from the ABS car body wire harness.
3. Connect one voltmeter to the EBCM wire
harness terminal A09 and then to the car body
for grounding.
Is the voltage within the range required?

Less than
1V

To
Step 9

To Step 20

9

1. EBCM wire harness remains detached from
the EBCM.
2. Front left straddling wire harness still remains
detached from the ABS car body wire harness.
3. Connect one voltmeter to the EBCM wire
harness terminal A10 and then to the car body
for grounding.

Less than
1V

To
Step
10

To Step 21