Chery A15 / 480 LHD model. Manual — part 71
Speed sensor
Possible Cause
4. The DTCs are 00283, 00285, 00290, 00287
[Description] The DTCs will appear when the
sensor has the recognizable open circuit,
short circuit and other failures.
[Hint] It may be caused due to the poor contact of
sensor, the short circuit of coil or harness,
or the failure of sensor signal processing
circuit in the ABS ECU.
· Open circuit of sensor connector
· Short circuit of sensor
· Short circuit between the sensor
connection or harness with the
counter-earth or power supply
· ABS ECU sensor signal processing
circuit failure
Check the sensor of any wheel
Normal
Abnormal
No
Yes
Normal
Replace ABS ECU
Remove the ABS
ECU connector, and
check whether the
resistances between
the following
terminals of ABS
ECU conform to the
standard values?
Standard value: 1.0
to 1.3 kΩ
Measure the
resistances, and, at
the same time,
swing the sensor
harness and
connector.
MK20I/E
FL: 1 to 2
FR: 19 to 20
RL: 5 to 6
RR: 22 to 23
Check the
related sensor
connector
The
failure
reoccurs or not?
Refer to the
“Repair
Details
of
Random
Failure”
Check
the
electrical
wirbetween the ABS ECU
and sensores
Repair the connector
Normal
ABS coding error
Possible Cause
5. The DTC is 01044
[Description] The DTC will appear when the
ECU’s software coding is inconsistent with
the hardware connection of ABS harness.
· The error connection of pin in
ABS harness
·
ABS coding error
Incorrect
Recoding (coding is 01901)
Abnormal
Repair harness
Use the diagnostic tester to check
whether the ABS ECU software
coding is correct
The correct value: Refer to the related
ABS electrical circuit diagram
Check whether the ABS harness pins
are connected
Pin connection: Refer to the related
ABS electrical circuit diagram
Supply terminal 30
Possible Cause
6. The DTC is 00668
[Description] The DTCs will appear when the
supply terminal 30# provides the
voltage or over-high voltage.
· ABS system’s fuse broken
· Too low or over-high battery voltage
· ABS electrical harness connections
damaged
· ABS ECU damaged
Abnormal
Check the ABS system’s 30# fuse
Replace the fuse
Normal
Abnormal Abnormal
Check the ABS harness connections
Repair the connections
Normal No
Retest. The abnormal reoccur?
Refer to “Repair Details
of Random Failure”
Yes
Check the battery voltage
Normal
Replace the ABS ECU
Disconnect the connection of ABS
electrical harness with the ECU,
turn the ignition switch to “ON”,
and measure the voltage between
the following terminals of ABS
electrical harness.
Terminal 8 and 9: 9.5-16.5V
Terminal 24 and 25: 9.5-16.5V
ABS operation abnormal
Possible Cause
7. The DTC is 01130
[Description] The DTC will appear when the ABS
is interfered by the
high-frequency
electromagnetic wave or when the
microprocessor believes that the
input speed signal is incredible.
·High-frequency
electromagnetic
wave interference
·Sensor damaged or sensor
electrical harness damaged
· ABS ECU damaged
No Abnormal
Check the sensor output voltage
Check sensor Replace sensor
Normal Normal
Replace ABS ECU
Check the harness between
ECU and sensor
DTC Failure Check Sheet
※Turn the ignition switch to “ON” position (the engine shuts down), and the ABS
warning lamp doesn’t light
Possible Cause
[Description] If the ABS warning lamp fails to light, it is
possible that the supply circuit of warning lamp is
open circuit, the bulb is burnt, or the warning
lamp control is damaged.
· The fuse broken
· The bulb of ABS warning lamp
fuse is broken
· The supply circuit broken
· The ABS warning lamp
controller broken
不正常
Abnormal
不正常
Abnormal
Abnormal
Check the ABS warning lamp’s fuse
Abnormal
in the central electrical box
Replace
Normal
Check the central electrical box fuse socket
Replace the fuse socket
Normal
Remove the ABS ECU connection
Check whether the bulb of ABS
Yes
Ignition switch: ON
warning lamp is burnt or not
Replace
The warning lamp lights?
No
Yes
Check the open short circuit of
Abnormal
Check the short circuit or earth of electrical
warning lamp supply circuit and
Replace the electrical harness
wire, in ABS harness, connecting with ABS
ground circuit in ABS harness
warning lamp controller and ECU
Normal
Yes
Check the connectors of warning
Abnormal Repair the connector
Replace the electrical harness
lamp supply and ground circuits
Normal No
Refer to “Repair Details
Failure reoccurs or not
of Random Failure”
Yes
※The ABS warning lamp lights after the engine starts.
Possible Cause
[Description] The possible cause may be the
ABS warning lamp controller
damaged or ABS warning lamp
circuit open circuit
· Warning lamp controller
damaged
· Short circuit of ABS warning
lamp controller
· ABS ECU damaged
Replace the warning lamp controller
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