Nissan Pathfinder. Manual — part 250
C1101, C1102, C1103, C1104 WHEEL SENSOR
BRC-59
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
DTC/CIRCUIT DIAGNOSIS
C1101, C1102, C1103, C1104 WHEEL SENSOR
DTC Logic
INFOID:0000000009729236
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULT
With
CONSULT.
1. Start engine and drive vehicle at approximately 21 km/h (13 MPH) or more for approximately 5 minutes.
2. Perform self-diagnostic result.
Is DTC C1101, C1102, C1103 or C1104 detected?
YES
>> Proceed to diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000009729237
Regarding Wiring Diagram information, refer to
1.
CONFIRM DTC
With CONSULT
1. Perform self-diagnostic result of ABS and record all active DTCs.
2. Clear all DTCs.
3. Perform DTC confirmation procedure. Refer to
.
Does DTC C1101, C1102, C1103 or C1104 reset?
YES
>> GO TO 2.
NO
>> Refer to GI-XX, “Intermittent Incident”.
2.
INSPECT WHEEL SENSOR
Inspect the suspect wheel sensor for damage or deformation.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace as necessary.
3.
HARNESS AND CONNECTOR INSPECTION
DTC
Display Item
Malfunction detected condition
Possible causes
C1101
RR RH SENSOR-1
• When power supply voltage of rear wheel sensor
RH is low.
• When an open or shorted circuit is detected in rear
wheel sensor RH circuit.
• Harness or connector
• Wheel sensor
• ABS actuator and electric unit
(control unit)
C1102
RR LH SENSOR-1
• When power supply voltage of rear wheel sensor
LH is low.
• When an open or shorted circuit is detected in rear
wheel sensor LH circuit.
C1103
FR RH SENSOR-1
• When power supply voltage of front wheel sensor
RH is low.
• When an open or shorted circuit is detected in front
wheel sensor RH circuit.
C1104
FR LH SENSOR-1
• When power supply voltage of front wheel sensor
LH is low.
• When an open or shorted circuit is detected in front
wheel sensor LH circuit.
BRC-60
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1101, C1102, C1103, C1104 WHEEL SENSOR
1. Disconnect ABS actuator and electric unit (control unit) connector E125 and wheel sensor connector of
suspect wheel.
2. Check harness, connectors and terminals for corrosion, deformation, disconnection, looseness or dam-
age.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace as necessary.
4.
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 5.
NO
>> Replace the wheel sensor. Refer to
BRC-118, "Removal and Installation - Front Wheel Sensor"
BRC-120, "Removal and Installation - Rear Wheel Sensor"
.
5.
CHECK WIRING HARNESS FOR SHORT TO VOLTAGE
1. Turn ignition switch ON.
2. Check voltage between wheel sensor harness connector terminals of suspect wheel and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair the circuit.
6.
CHECK WIRING HARNESS FOR SHORT TO GROUND
1. Turn ignition switch OFF.
2. Check continuity between wheel sensor harness connector terminals of suspect wheel and ground.
Wheel Sensor
Ground
Voltage
Wheel
Connector
Terminal
Front LH
E18
1
—
0V
2
Front RH
E43
1
2
Rear LH
C10
1
2
Rear RH
C11
1
2
Wheel Sensor
Ground
Continuity
Wheel
Connector
Terminal
C1101, C1102, C1103, C1104 WHEEL SENSOR
BRC-61
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair the circuit.
7.
CHECK WIRING HARNESS FOR SHORT BETWEEN CIRCUITS
Check continuity between wheel sensor harness connector terminals of suspect wheel.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair the circuit.
8.
CHECK WIRING HARNESS FOR OPEN CIRCUIT
Check continuity between ABS actuator and electric unit (control unit) harness connector E125 and harness
connector of suspect wheel sensor.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair the circuit.
9.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT
1. Turn ignition switch ON.
2. Check voltage between ABS actuator and electric unit (control unit) harness connector E125 terminal and
ground.
Front LH
E18
1
—
No
2
Front RH
E43
1
2
Rear LH
C10
1
2
Rear RH
C11
1
2
Wheel Sensor
(+)
(-)
Continuity
Wheel
Connector
Terminal
Terminal
Front LH
E18
1
2
No
Front RH
E43
Rear LH
C10
Rear RH
C11
Wheel sensor
ABS actuator and electric unit (control unit)
Wheel sensor
Continuity
Connector
Terminal
Connector
Terminal
Yes
Front LH
E125
20
E18
1
19
2
Front RH
10
E43
1
9
2
Rear LH
8
C10
1
7
2
Rear RH
18
C11
1
17
2
BRC-62
< DTC/CIRCUIT DIAGNOSIS >
[VDC/TCS/ABS]
C1101, C1102, C1103, C1104 WHEEL SENSOR
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Check the following:
• 10A fuse No. 49 located in the IPDM E/R
• Harness between ABS actuator and electric unit (control unit) and IPDM E/R
10.
CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between ABS actuator and electric unit (control unit) connector E125 terminals and
ground.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair or replace malfunctioning components.
11.
CHECK WHEEL SENSOR INPUT VOLTAGE
1. Connect ABS actuator and electric unit (control unit) connector E125.
2. Turn ignition switch ON.
3. Check voltage between suspect wheel sensor harness connector terminals.
Is the inspection result normal?
YES
>> Replace wheel sensor. Refer to
BRC-118, "Removal and Installation - Front Wheel Sensor"
BRC-120, "Removal and Installation - Rear Wheel Sensor"
. Then, GO TO 12.
NO
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-123, "Removal and Installa-
.
12.
CONFIRM REPAIR
With CONSULT
1. Clear all DTCs.
2. Perform DTC confirmation procedure. Refer to
.
Does DTC C1105, C1106, C1107 or C1108 reset?
YES
>> Replace ABS actuator and electric unit (control unit). Refer to
BRC-123, "Removal and Installa-
.
NO
>> Inspection End.
ABS actuator and electric unit
(control unit)
Ground
Condition
Voltage
(Approx.)
Connector
Terminal
E125
34
—
Ignition switch ON
Battery voltage
Ignition switch OFF
0V
ABS actuator and electric unit (control unit)
—
Continuity
Connector
Terminal
E125
1
Ground
Yes
2
Wheel Sensor
(+)
(-)
Voltage
(Approx.)
Wheel
Connector
Terminal
Terminal
Front LH
E18
1
2
Battery voltage
Front RH
E43
Rear LH
C10
Rear RH
C11
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