Nissan Pathfinder (2011 year). Manual — part 101
U1000 CAN COMM CIRCUIT
BRC-73
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
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U1000 CAN COMM CIRCUIT
Description
INFOID:0000000006245926
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
INFOID:0000000006245927
DTC DETECTION LOGIC
Diagnosis Procedure
INFOID:0000000006245928
1.
CONNECTOR INSPECTION
1. Turn ignition switch OFF.
2. Disconnect the ABS actuator and electric unit (control unit) connector.
3. Check the terminals for deformation, disconnection, looseness, and so on. If there is a malfunction, repair
or replace the terminal.
4. Reconnect connector and perform self-diagnosis.
Is “CAN COMM CIRCUIT” displayed in self-diagnosis display items?
YES
>> Print out the self-diagnostic results, and refer to
LAN-14, "Trouble Diagnosis Flow Chart"
NO
>> Connector terminal is loose, damaged, open, or shorted.
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)
2011 Pathfinder
BRC-74
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
VDC OFF SWITCH
VDC OFF SWITCH
Description
INFOID:0000000006245929
VDC OFF switch can deactivate (turn OFF) the VDC/TCS function by pressing the VDC OFF switch.
Component Function Check
INFOID:0000000006245930
1.
CHECK VDC OFF SWITCH OPERATION
Press and release the VDC OFF switch, then press and release the VDC OFF switch again and check that the
VDC OFF indicator lamp in the combination meter turns ON/OFF correctly.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006245931
Regarding Wiring Diagram information, refer to
BRC-88, "Wiring Diagram - With VQ40DE"
1.
CHECK VDC OFF SWITCH
Perform the VDC OFF switch component inspection. Refer to
BRC-75, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Replace VDC OFF switch.
2.
CHECK VDC OFF SWITCH HARNESS
1. Disconnect ABS actuator and electric unit (control unit) connec-
tor.
2. Check continuity between ABS actuator and electric unit (control
unit) connector E125 (A) terminal 6 and VDC OFF switch con-
nector M154 (B) terminal 1.
3. Check continuity between ABS actuator and electric unit (control
unit) connector E125 (A) terminal 6 and ground.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair or replace harness.
3.
CHECK VDC OFF SWITCH GROUND
Condition
VDC OFF indicator lamp illumination status
VDC OFF switch: pressed and released
ON
VDC OFF switch: pressed and released
OFF
ABS actuator and electric unit
(control unit)
VDC OFF switch
Continuity
Connector
Terminal
Connector
Terminal
E125 (A)
6
M154 (B)
1
Yes
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E125 (A)
6
Ground
No
AWFIA0682ZZ
2011 Pathfinder
VDC OFF SWITCH
BRC-75
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
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Check continuity between VDC OFF switch connector M154 and
ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace harness.
4.
CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-112, "Removal and Installa-
.
NO
>> Replace combination meter. Refer to
MWI-88, "Removal and Installation"
Component Inspection
INFOID:0000000006245932
1.
CHECK VDC OFF SWITCH
1. Turn ignition switch OFF.
2. Disconnect VDC OFF switch connector.
3. Check continuity between VDC OFF switch terminals.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace VDC OFF switch.
Special Repair Requirement
INFOID:0000000006689867
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-13, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
VDC OFF switch
—
Continuity
Connector
Terminal
M154
2
Ground
Yes
AWFIA0031ZZ
VDC OFF switch terminals
Condition
Continuity
1
−
2
When VDC OFF switch is pressed.
Yes
When VDC OFF switch is released.
No
AWFIA0446ZZ
2011 Pathfinder
BRC-76
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
ABS WARNING LAMP
ABS WARNING LAMP
Description
INFOID:0000000006245934
×
: ON –: OFF
Component Function Check
INFOID:0000000006245935
1.
CHECK ABS WARNING LAMP OPERATION
Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006245936
1.
CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Check items displayed by self-diagnosis.
2.
CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-112, "Removal and Installa-
.
NO
>> Replace combination meter. Refer to
MWI-88, "Removal and Installation"
Special Repair Requirement
INFOID:0000000006689868
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-13, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
Condition
ABS warning lamp
Ignition switch OFF
–
For 2 seconds after turning ON ignition switch
×
2 seconds later after turning ON ignition switch
–
ABS function is malfunctioning.
×
EBD function is malfunctioning.
×
2011 Pathfinder
BRAKE WARNING LAMP
BRC-77
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
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BRAKE WARNING LAMP
Description
INFOID:0000000006245938
×
: ON –: OFF
NOTE:
• 1: Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid level switch operation
(when brake fluid is insufficient).
• 2: After starting engine, brake warning lamp is turned off.
Component Function Check
INFOID:0000000006245939
1.
BRAKE WARNING LAMP OPERATION CHECK
Check that the lamp illuminates after the ignition switch is turned ON, and turns OFF after the engine is
started.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006245940
1.
CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Check items displayed by self-diagnosis.
2.
CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-112, "Removal and Installa-
.
NO
>> Replace combination meter. Refer to
MWI-88, "Removal and Installation"
Special Repair Requirement
INFOID:0000000006689869
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-13, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
Condition
Brake warning lamp (Note 1)
Ignition switch OFF
–
Ignition switch ON
×
(Note 2)
EBD function is malfunctioning.
×
2011 Pathfinder
BRC-78
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
VDC OFF INDICATOR LAMP
VDC OFF INDICATOR LAMP
Description
INFOID:0000000006245942
×
: ON –: OFF
Component Function Check
INFOID:0000000006245943
1.
VDC OFF INDICATOR LAMP OPERATION CHECK 1
Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Go to diagnosis procedure. Refer to
2.
VDC OFF INDICATOR LAMP OPERATION CHECK 2
Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the
VDC OFF switch.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Check VDC OFF switch. Refer to
.
Diagnosis Procedure
INFOID:0000000006245944
1.
CHECK VDC OFF SWITCH
Check that the VDC OFF indicator lamp in the combination meter turns ON/OFF correctly when operating the
VDC OFF switch.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Check VDC OFF switch. Refer to
.
2.
CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Check items displayed by self-diagnosis.
3.
CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-112, "Removal and Installa-
.
NO
>> Replace combination meter. Refer to
MWI-88, "Removal and Installation"
Condition
VDC OFF indicator lamp
Ignition switch OFF
–
For 2 seconds after turning ON ignition switch
×
2 seconds later after turning ON ignition switch
–
VDC OFF switch turned ON. (VDC function is OFF.)
×
VDC/TCS function is malfunctioning.
×
ABS function is malfunctioning.
×
EBD function is malfunctioning.
×
2011 Pathfinder
VDC OFF INDICATOR LAMP
BRC-79
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
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Special Repair Requirement
INFOID:0000000006689870
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-13, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
2011 Pathfinder
BRC-80
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
SLIP INDICATOR LAMP
SLIP INDICATOR LAMP
Description
INFOID:0000000006245946
×
: ON –: OFF
Component Function Check
INFOID:0000000006245947
1.
CHECK SLIP INDICATOR LAMP OPERATION
Check that the lamp illuminates for approximately 2 seconds after the ignition switch is turned ON.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Go to diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000006245948
1.
CHECK SELF-DIAGNOSIS
Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Check items displayed by self-diagnosis.
2.
CHECK COMBINATION METER
Check if the indication and operation of combination meter are normal. Refer to
.
Is the inspection result normal?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-112, "Removal and Installa-
.
NO
>> Replace combination meter. Refer to
MWI-88, "Removal and Installation"
Special Repair Requirement
INFOID:0000000006689871
1.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
Always perform neutral position adjustment for the steering angle sensor when replacing the ABS actuator
and electric unit (control unit). Refer to
BRC-12, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL
.
>> GO TO 2
2.
CALIBRATION OF DECEL G SENSOR
Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).
BRC-13, "CALIBRATION OF DECEL G SENSOR : Description"
.
>> END
Condition
SLIP indicator lamp
Ignition switch OFF
–
For 2 seconds after turning ON ignition switch
×
2 seconds later after turning ON ignition switch
–
VDC/TCS function is malfunctioning.
×
ABS function is malfunctioning.
×
EBD function is malfunctioning.
×
2011 Pathfinder
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