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