Nissan Xterra. Instruction — part 98
C1115 ABS SENSOR [ABNORMAL SIGNAL]
BRC-49
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
C
D
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G
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BRC
N
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C1115 ABS SENSOR [ABNORMAL SIGNAL]
Description
INFOID:0000000009482610
When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current
signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit).
DTC Logic
INFOID:0000000009482611
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000009482612
Regarding Wiring Diagram information, refer to
BRC-90, "Wiring Diagram - WITHOUT HILL DESCENT CON-
CAUTION:
Do not check between wheel sensor terminals.
1.
CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (control unit) connector and wheel sensor of malfunctioning
code.
2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair or replace as necessary.
2.
CHECK WHEEL SENSOR OUTPUT SIGNAL
1. Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.
2. Turn on the ABS active wheel sensor tester power switch.
NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.
3. Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.
NOTE:
If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and
retest.
Does the ABS active wheel sensor tester detect a signal?
YES
>> GO TO 3
DTC
Display item
Malfunction detected condition
Possible cause
C1115
ABS SENSOR
[ABNORMAL SIGNAL]
When wheel sensor input signal is malfunctioning.
• Harness or connector
• Wheel sensor
• ABS actuator and electric unit
(control unit)
Self-diagnosis results
ABS SENSOR [ABNORMAL SIGNAL]
BRC-50
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
C1115 ABS SENSOR [ABNORMAL SIGNAL]
NO
>> Replace the wheel sensor. Refer to
BRC-111, "Removal and Installation"
3.
CHECK TIRES
Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Adjust tire pressure or replace tire(s).
4.
CHECK WHEEL BEARINGS
Check wheel bearing axial end play. Refer to
FAX-5, "On-Vehicle Inspection and Service"
Is the inspection result normal?
YES
>> GO TO 5
NO
>> Repair or replace as necessary. Refer to
FAX-8, "Removal and Installation"
(rear).
5.
CHECK WIRING HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connec-
tor and wheel sensor connector of malfunction code No.
2. Check continuity between wheel sensor connector terminals
and ground.
Is the inspection result normal?
YES
>> GO TO 6
NO
>> Repair the circuit.
6.
CHECK WIRING HARNESS FOR OPEN CIRCUIT
1. Check continuity between ABS actuator and electric unit (control unit) connector and the malfunctioning
wheel sensor connector.
Is the inspection result normal?
YES
>> Replace the ABS actuator and electric unit (control unit). Refer to
.
NO
>> Repair the circuit.
Component Inspection
INFOID:0000000009482613
1.
CHECK DATA MONITOR
On “DATA MONITOR”, select “FR LH SENSOR”, “FR RH SENSOR”, “RR LH SENSOR”, and “RR RH SEN-
SOR”, and check the vehicle speed.
Continuity should not exist.
AWFIA0188ZZ
Wheel sensor
ABS actuator and
electric unit (control unit)
Wheel sensor
Continuity
Connector
Terminal
Connector
Terminal
Front LH
E125
45
E18
1
Yes
46
2
Front RH
34
E117
1
33
2
Rear LH
36
C11
1
37
2
Rear RH
43
C10
1
42
2
C1115 ABS SENSOR [ABNORMAL SIGNAL]
BRC-51
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Is the inspection result normal?
YES
>> Inspection End
NO
>> Go to diagnosis procedure. Refer to
Special Repair Requirement
INFOID:0000000009482614
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
Wheel sensor
Vehicle speed (DATA MONITOR)
FR LH SENSOR
Nearly matches the speedometer display (
±10% or less)
FR RH SENSOR
RR LH SENSOR
RR RH SENSOR
BRC-52
< DTC/CIRCUIT DIAGNOSIS >
[TYPE 1]
C1116 STOP LAMP SWITCH
C1116 STOP LAMP SWITCH
Description
INFOID:0000000009482615
The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the ABS actuator and electric unit
(control unit).
DTC Logic
INFOID:0000000009482616
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSIS RESULTS
Check the self-diagnosis results.
Is above displayed on the self-diagnosis display?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End
Diagnosis Procedure
INFOID:0000000009482617
Regarding Wiring Diagram information, refer to
BRC-90, "Wiring Diagram - WITHOUT HILL DESCENT CON-
1.
CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (control unit) connector and stop lamp switch connector.
2. Check the terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?
YES
>> GO TO 2
NO
>> Repair or replace as necessary.
2.
STOP LAMP SWITCH INSPECTION
1. Connect the stop lamp switch connector.
2. Check the voltage between the ABS actuator and electric unit (control unit) connector E125 terminal 39
and ground.
Is the inspection result normal?
YES
>> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit
(control unit). Refer to
BRC-113, "Removal and Installation"
.
NO
>> GO TO 3
3.
STOP LAMP SWITCH CIRCUIT INSPECTION
1. Disconnect the stop lamp switch connector.
DTC
Display item
Malfunction detected condition
Possible cause
C1116
STOP LAMP SW
When stop lamp switch circuit is open.
• Harness or connector
• Stop lamp switch
• ABS actuator and electric unit
(control unit)
Self-diagnosis results
STOP LAMP SW
Brake pedal depressed
: Battery voltage
Brake pedal released
: 0V
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