Chery B11. Manual — part 107

Ignition
switch

Power
supply

1. Description of circuit
This circuit is used to monitor the voltage
level that can be provided to EBCM. Not
all system properties can be ensured when
the voltage has decreased to a certain
extent. Therefore, monitor the voltage to
ensure that the battery has been charged
properly before the operation of ABS and
also during the operation of ABS if the
voltage is possible to decrease
substantially.

2. Conditions for setup of
troubleshooting codes
If the ignition voltage to terminal A11 and
the storage battery to terminals A and B
are lower than 10.5V in the absence of
ABS or during initializing, then C0036 can
only be set when the car speed is bigger
than 8km/h (5mile/h).

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 C0036.
(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 C0036 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
C0036 includes:
(1) Weak or discharged storage battery;
(2) Bad contact of storage battery
terminals;
(3) Too much consumption of storage
battery energy during workshop assembly
or additional equipment connection
(additional load) after exworks;
(4) Ground fault of storage battery on
cylinder body or chasis;
(5) EBCM terminal bad contact;
(6) EBCM ground fault;
(7) Charging system fault (generator);
Thoroughly check the wiring and
connectors. Failure in thoroughly and
carefully checking the wiring and
connectors may lead to component
replacement instead of maintenance.

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;
4. Check if there is any bad contact for the
following:
·Storage battery terminal cable;
· Connection between negative cable and
cylinder and/or chasis.
· Connection between positive cable and
starter solenoid and/or junction box.
·EBCM terminals A11, A, B, C
·EBCM ground wire in the chasis.
Are the above connections satisfactory?

To

Step 4

To Step 8

4

1. EBCM still remains detached.
2. Storage battery cable still remains detached.
3. Connect one ohmmeter between EBCM
wire harness terminal C and storage battery
negative cable.
Is the resistance within the range required?

Less than
2ohm

To
Step 5

To Step 9

5

1. Reconnect the storage battery wires.
2. EBCM still remains detached.
3. Ignite
4. Measure the voltages on EBCM wire
harness terminals A11, A and B with a
voltmeter.
Are the voltages on three terminals within the
range required?

Storage
battery
voltage

To
Step
11

To Step 10

6

Check the diagnostic circuit.

7

Repair the charging system and/or
Recharge/replace the storage battery and/or

Identify and repair the cause of material extra
power consumer.

8

Repair terminals and/or connections as the
case may require.

9

Identify and repair the cause of high resistance
between storage battery cathode cable and
EBCM wire harness connectors.

10

Identify and repair the cause of EBCM low
voltage.

11

Replace the EBCM.

Seventeen. C0037 High system voltage

Ignition
switch

Power
supply

1. Description of circuit
This circuit is used to monitor the voltage
level that can be provided to EBCM.
When the voltage increases to a certain
extent, the system may be damaged.

2. Conditions for setup of
troubleshooting codes
If the voltage provided for terminal A
and/or B is bigger than 17V for one
second, then DTC C0037 can only be set
when the car speed is bigger than 8km/h
(5mile/h).

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 C0037.
(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 C0037 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
C0037 includes:
(1) Charging system trouble (generator)
(2) Bad contact
(3) 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. Connect the voltmeter to the storage battery’s
anode and cathode terminals.
2. Turn off all components.
3. Turn off the engine.
4. Monitor the storage battery voltage in ABS
data list when the engine is running at a speed of
2,000rpm for a couple of seconds.
Is the voltage within the range required?

Less than
17V

To
Step 3

To Step 5

3

1. Connect the scanning device and select the
ABS data list.
2. Monitor the storage battery voltage in ABS
data list when the engine is turning at a speed of
2,000rpm for a couple of seconds.
Is the voltage within the range required?

Less than
17V

To
Step 6

To Step 7

4

Check the diagnostic circuit.

5

Refer to “Diagnosis of Starter and Charging
System”.

6

The condition is intermittent. Refer to
“Assistance to Troubleshooting” and “Diagnosis
of Starter and Charging System”.

7

Replace the EBCM.

Eighteen. C0042 Open circuit of oil pump motor

1. Description of circuit

The

pump

motor is

incorporated in the BPMV and grounded
through EBCM terminal D.

Ignition
switch

Power supply

Solenoid valve relay

Oil pump motor

Electronic brake
control module

Brake pressure modulator valve