JAC HFC4DA1-2C, Руководство по обслуживанию

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ABS
ABS
ABS ABS Anti-lock
Anti-lock
Anti-lock Anti-lock Brake
Brake
Brake Brake System
System
System System
99
Diagnosis
Diagnosis Diagnosis
Diagnosis and
and and
and Testing
Testing Testing
Testing
7. Voltage out of range: C0800
Circuit description:
ABS ECU monitors the battery power supply voltage supplied to ABS ECU through Uz. If the voltage is out of the
specified range, the following faults shall occur:
Too low voltage supplied to ABS ECU may lead to abnormal operation of ABS system.
Too high voltage supplied to ABS ECU may lead to damage of ABS components.
Normal operating voltage of system: 9.3V
～
16.9V under operation of reflux pump motor
DTC Detection
Condition Set Condition Possible Faulty Areas
C0800 With ignition
switch turned
on
1. If the voltage is below 9.6V with no operation
of ABS, or below 9.3V with operation of ABS,
this DTC shall be recorded and ABS shall be
turned off by software.
2. If voltage below 7.6V or above 16.9V is
continuously monitored, this DTC shall be
recorded and ABS and EBD shall be turned off
by hardware.
1. Overdischarge or damage of
battery.
2. Fault of voltage regulator
(charging system).
3. Fault of fuse or connector,
imperfect body grounding, or
contact resistance.
Occurrence of fault shall give rise to the following operation:
Braking Strategy Failure Protection
Normal operation of reflux pump motor and solenoid
valve cannot be ensured. Brake system shall enter the conventional braking
mode.
ABS and EBD warning lamps shall be lit.
If the voltage is far below 9.6V The system shall be converted to EBD emergency
control mode.
ABS warning lamp shall be lit.
If the voltage is far above 7.6V Brake system shall enter the conventional braking
mode.
ABS and EBD warning lamps shall be lit.
Voltage Uz is above 9.8V after a period of too low
voltage. System shall retreat from the EBD emergency
operation mode.
Normal operation of ABS shall recover.