Nissan Teana J32. Manual - part 266
BRC-122
< COMPONENT DIAGNOSIS >
[VDC/TCS/ABS]
U1000, U1002 CAN COMM CIRCUIT
U1000, U1002 CAN COMM CIRCUIT
Description
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CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
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DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
1.
Turn the ignition switch ON.
2.
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “U1000” or “U1002” detected?
YES
>> Proceed to diagnosis procedure. Refer to
BRC-122, "Diagnosis Procedure"
.
NO
>> INSPECTION END
Diagnosis Procedure
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1.
PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (control unit) self-diagnosis.
Is DTC “U1000” or “U1002” detected?
YES
>> Proceed to diagnosis procedure. Refer to
LAN-14, "Trouble Diagnosis Flow Chart"
.
NO
>> INSPECTION END
Special Repair Requirement
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1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to
BRC-66, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-
>> END
DTC
Display item
Malfunction detected condition
Possible cause
U1000
CAN COMM CIRCUIT
When ABS actuator and electric unit (control unit) is not
transmitting or receiving CAN communication signal for 2
seconds or more.
• CAN communication line
• ABS actuator and electric unit
(control unit)
U1002
SYSTEM COMM (CAN)
When ABS actuator and electric unit (control unit) is not
transmitting or receiving CAN communication signal for 2
seconds or less.