Anti-lock brake system (ABS control unit)
P-43
DTC DTC(16hex)
Potential failure
symptom
Description of DTC
C1095 0x5095 0100 Fault of solenoid
C0010 0x4010 0100 Fault of left front inlet valve
C0011 0x4011 0100 Fault of left front outlet valve
C0014 0x4014 0100 Fault of right front inlet valve
C0015 0x4015 0100 Fault of right front outlet valve
C0018 0x4018 0100 Fault of left rear inlet valve
Faults Setting conditions Possible fault area
Solenoid fault
1. Start the corresponding solenoid, but no
feedback;
2. After the ignition switch turned on, the ECU of
ABS control unit detected the permanent or
intermittent short-circuit of the corresponding
solenoid to the power supply or grounding;
3. During the drive in the vehicle, the fault in the
solenoid or its connection is detected;
-- The vehicle remains in static state with the
brake pedal not depressed.
-- The speed is ca.15km/h when the brake pedal
stepped down.
4. In all conditions, there are faults in the oil line
in the ABS control unit with the hydraulic
pressure regulator.
1. Faults in the oil line in the ABS
control unit with the hydraulic
pressure regulator: braking
circuit; electricity;
2. Hydraulic pressure /mechanical
faults.
The ECU of ABS control unit controls the solenoid operation through the control of the grounding of
each solenoid, to regulate the braking pressure of every brake loop.
Faults in the reflux pump/motor
DTC DTC(16hex)
Potential failure
symptom
Description of DTC
C0020 0x4020 0100 The reflux pump doesn’t work (motor circuit)
Faults Causes of failures Possible fault area
Reflux
pump/motor
1. After the motor relay of reflux pump has been
operating for 60ms, the monitoring on the
reflux pump detected no voltage signal;
2. The motor relay of reflux pump failed to work,
the monitoring on the reflux pump has
detected that the voltage exceeded 2.5s
3. The motor relay of reflux pump stopped
working, the monitoring on the reflux pump
detected that the voltage did not drop down.
1. The “motor circuit of reflux
pump “in the ABS control unit
2. The motor relay circuit of reflux
pump break circuited
3. Fault in the motor relay of reflux
pump;
4. Fault in the motor connection of
reflux pump;
5. Poor grounding;
6. Poor power supply
7. Fault in the motor of reflux
pump
In the stage of pressure reduction of ABS control unit: the reflux pump is operating, pumping the
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