Nissan Pathfinder. Manual - part 250

C1101, C1102, C1103, C1104 WHEEL SENSOR

BRC-59

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

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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 

BRC-59, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009729237

Regarding Wiring Diagram information, refer to 

BRC-44, "Wiring Diagram"

.

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 

BRC-59, "DTC Logic"

.

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"

 or

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]

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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"

 or

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-

tion"

.

12.

CONFIRM REPAIR

 With CONSULT

1. Clear all DTCs.

2. Perform DTC confirmation procedure. Refer to 

BRC-59, "DTC Logic"

.

Does DTC C1105, C1106, C1107 or C1108 reset?

YES

>> Replace ABS actuator and electric unit (control unit). Refer to 

BRC-123, "Removal and Installa-

tion"

.

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