Chery B11. Manual — part 108

2. Conditions for setup of
troubleshooting codes
C0042 can only be set up when the
ignition switch is on, pump motor is off
and EBCM detects high resistance or open
circuit on the motor.

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 C0042.
(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 DTC C0042 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
The typical cause of the setup of DTC
C0042 includes:
(1) Open circuit or high resistance of
BPMV pump motor;
(2) EBCM trouble.

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 4

2

1. Shut off engine;
2. Detach the EBCM;
3. Dismantle the EBCM from the BPMV;
4. Check if the connector between EBCM and
BPMV suffers any damage, corrosion, bad
contact or overflowing brake fluid;
Are the terminals and the connectors all right
and is there any brake fluid, damage and
corrosion in the air conditioner?

3

Connect an ohmmeter between BPMV terminals
1 and 2.
Is the measured pump motor resistance within
the range required?

Less than
2ohm

To
Step 6

To Step 7

4

Check the diagnostic circuit.

5

1. If there is any damage and/or corrosion,
replace the EBCM and/or BPMV if necessary.
2. If there is any brake fluid, replace both the
EBCM and BPMV.

6

Replace the EBCM.

7

Replace the BPMV.

Nineteen. C0043 Failure of oil pump motor

Ignition
switch

Power supply

Solenoid valve relay

Oil pump motor

Electronic brake control module

Brake pressure modulator

1. Description of circuit
Pump motor is included in BPMV and
grounded through EBCM terminal D.

2. Conditions for setup of
troubleshooting codes
C0043 can only be set up when the
ignition switch is on. Order the pump
motor to be turned off after receiving the
operation order and the EBCM detects
locked or slowly-moving pump motor.

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 C0043.
(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 DTC C0043 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
The typical cause of the setup of DTC
C0043 includes:
(1) Terminal D bad contact;
(2) Overresitance of terminal D ground
circuit;
(3) Open circuit of terminal D ground
circuit;
(4) BPMV pump motor trouble;
(5) EBCM trouble.

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 4

2

1. Shut off engine
2. Detach the battery cathode cable
3. Detach the EBCM wire harness from the
EMBC
4. Connect one ohmmeter between the storage
battery cathode cable and EBCM terminal D.
Is the resistance within the range required?

Less than
2ohm

To
Step 3

To Step 7

3

1. Check from the battery cathode cable to the

To

To Step 8

engine cylinder and/or chasis ground wire to see
if the ground circuit is clean and fast.
2. Check from the EBCM terminal D to the
chasis grounding to see if the connection is
clean and fast.
Is the connection clean and fast?

Step 4

4

1. EBCM remains detached.
2. Detach the EBCM from the BPMV.
3. Check if the connector between the EBCM
and BPMV suffers any damage, corrosion, bad
contact or overflowing brake fluid.
Are the terminals and connectors correct and is
there any overflowing brake fluid, damage or
corrosion?

To

Step 5

To Step 9

5

Connect an ohmmeter to terminals 1 and 2 of the
BPMV.
Is the pump motor resistance within the range
required?

Less than
2ohm

To
Step
10

To Step 11

6

Check the diagnostic circuit.

7

Identify and repair the cause of high resistance
between EBCM ground circuit and chasis
ground circuit.

8

Repair ground fault.

9

1. In the case of damage and/or corrosion,
replace the EBCM and/or BPMV if necessary.
2. In the case of overflowing brake fluid, replace
both the EBCM and BPMV.

10

Replace the EBCM.

11

Replace the BPMV.

Twenty. C0054 Abnormal parking

Ignition
switch

Power supply

1. Description of circuit
This troubleshooting code is used in the
case of sudden voltage failure or ground

circuit for the EBCM. The storage battery
voltage is provided on terminals A and B.

Ignition voltage is provided on terminal
A11. Terminal C is grounded.

2. Conditions for setup of
troubleshooting codes
DTC C0054 will be set up when the
EBCM has detected that the power source
or ground circuit is missing but regained in
a short while.

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 C0054.
(3) ABS is disabled and ABS alarm lamp
is on.
(4) DDRP is disabled and braking alarm
lamp is on.

4. Conditions for clearing
troubleshooting codes
(1) If the conditions for setting up
troubleshooting code DTC C0054 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
The typical causes of C0054 include:
(1) Weak or discharged storage battery;
(2) Storage battery terminals are loosened
or have bad contact;
(3) Disconnected storage battery;
(4) Ground cable is loosened or has bad
contact;
(5) EBCM terminals have bad contact;
(6) Extra current is excessively shunted;
(7) Charging system fault.

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 6

2

1. Carry out a load test on the storage battery.
Refer to “Storage Battery” in the maintenance
manual.
2. Check the charging system. Refer to “Starter
and Charging System” in the maintenance
manual.
3. Carry out additional load test.
Are the tests on storage battery and charging
system and the load test passed?

Storage
battery
must
maintain a
voltage of
9.6V for
ten
seconds.
The
shunted
current
shall not
exceed
30mA

To
Step 3

To Step 7

3

1. Shut off engine
2. Detach the storage battery positive and
negative terminals
3. Detach the wire harness from the EBCM;

To

Step 4

To Step 8