Nissan Pathfinder (2008 year). Manual - part 105

BRC-146

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

COMPONENT DIAGNOSIS

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

Description

INFOID:0000000001731032

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:0000000001731033

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 

BRC-146, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001731034

CAUTION:

Do not check between wheel sensor terminals.

INSPECTION PROCEDURE

1.

CONNECTOR INSPECTION

Disconnect the ABS actuator and electric unit (control unit) connector E125 and wheel sensor of malfunction-
ing code. 
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.

DTC

Display item

Malfunction detected condition

Possible cause

C1101

RR RH SENSOR-1

Circuit of rear RH wheel sensor is open. Or when the sen-
sor power voltage is outside the standard.

• Harness or connector
• Wheel sensor
• ABS actuator and electric unit 

(control unit)

C1102

RR LH SENSOR-1

Circuit of rear LH wheel sensor is open. Or when the sen-
sor power voltage is outside the standard.

C1103

FR RH SENSOR-1

Circuit of front RH wheel sensor is open. Or when the 
sensor power voltage is outside the standard.

C1104

FR LH SENSOR-1

Circuit of front LH wheel sensor is open. Or when the 
sensor power voltage is outside the standard.

Self-diagnosis results

RR RH SENSOR-1

RR LH SENSOR-1

FR RH SENSOR-1

FR LH SENSOR-1

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

BRC-147

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

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

NO

>> Replace the wheel sensor. Refer to 

BRC-237, "Removal and Installation"

.

3.

CHECK TIRES

Check for inflation pressure, wear and size of each tire.

Are tire pressure and size correct and is tire wear within specifications?

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"

 (front) or 

RAX-5,

"On-Vehicle Inspection and Service"

 (rear).

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace as necessary. Refer to 

FAX-8, "Removal and Installation"

 (front) or 

RAX-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 harness connector ter-
minals 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) harness connector E125 and the
malfunctioning wheel sensor harness connector E18, E117 or C13.

Is the inspection result normal?

YES

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

BRC-234, "Removal and Instal-

lation"

.

NO

>> Repair the circuit.

Continuity should not exist.

WFIA0326E

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

37

C13

3

36

4

Rear RH

42

1

43

2

BRC-148

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

Component Inspection

INFOID:0000000001731035

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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

BRC-146, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000001731036

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-11, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

POSITION : Description"

.

>> 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).
Refer to 

BRC-12, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

Wheel sensor

Vehicle speed (DATA MONITOR)

FR LH SENSOR

Nearly matches the speedometer dis-
play (

±

10% or less)

FR RH SENSOR

RR LH SENSOR

RR RH SENSOR

C1105, C1106, C1107, C1108 WHEEL SENSOR-2

BRC-149

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1105, C1106, C1107, C1108 WHEEL SENSOR-2

Description

INFOID:0000000001731037

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:0000000001731038

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 

BRC-149, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001731039

CAUTION:

Do not check between wheel sensor terminals.

INSPECTION PROCEDURE

1.

CONNECTOR INSPECTION

Disconnect the ABS actuator and electric unit (control unit) connector E125 and wheel sensor of malfunction-
ing code. 
Check the terminals for deformation, disconnection, looseness or damage.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace as necessary.

DTC

Display item

Malfunction detected condition

Possible cause

C1105

RR RH SENSOR-2

When the circuit in the rear RH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor 
and sensor rotor is too large and the sensor pulse cannot 
be recognized by the control unit.

• Harness or connector
• Wheel sensor
• ABS actuator and electric unit 

(control unit)

C1106

RR LH SENSOR-2

When the circuit in the rear LH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor 
and sensor rotor is too large and the sensor pulse cannot 
be recognized by the control unit.

C1107

FR RH SENSOR-2

When the circuit in the front RH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor 
and sensor rotor is too large and the sensor pulse cannot 
be recognized by the control unit.

C1108

FR LH SENSOR-2

When the circuit in the front LH wheel sensor is short-cir-
cuited. Or when the distance between the wheel sensor 
and sensor rotor is too large and the sensor pulse cannot 
be recognized by the control unit.

Self-diagnosis results

RR RH SENSOR-2

RR LH SENSOR-2

FR RH SENSOR-2

FR LH SENSOR-2

BRC-150

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C1105, C1106, C1107, C1108 WHEEL SENSOR-2

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

NO

>> Replace the wheel sensor. Refer to 

BRC-237, "Removal and Installation"

.

3.

CHECK TIRES

Check for inflation pressure, wear and size of each tire.

Are tire pressure and size correct and is tire wear within specifications?

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"

 (front) or 

RAX-5,

"On-Vehicle Inspection and Service"

 (rear).

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace as necessary. Refer to 

FAX-8, "Removal and Installation"

 (front) or 

RAX-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 harness connector ter-
minals 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) harness connector E125 and the
malfunctioning wheel sensor harness connector E18, E117, or C13.

Continuity should not exist.

WFIA0326E

C1105, C1106, C1107, C1108 WHEEL SENSOR-2

BRC-151

< COMPONENT DIAGNOSIS >

[HDC/HSA/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

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

BRC-234, "Removal and Instal-

lation"

.

NO

>> Repair the circuit.

Component Inspection

INFOID:0000000001731040

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.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

BRC-149, "Diagnosis Procedure"

.

Special Repair Requirement

INFOID:0000000001731041

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-11, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL

POSITION : Description"

.

>> 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).
Refer to 

BRC-12, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

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

37

C13

3

36

4

Rear RH

42

1

43

2

Wheel sensor

Vehicle speed (DATA MONITOR)

FR LH SENSOR

Nearly matches the speedometer dis-
play (

±

10% or less)

FR RH SENSOR

RR LH SENSOR

RR RH SENSOR

BRC-152

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C1109 POWER AND GROUND SYSTEM

C1109 POWER AND GROUND SYSTEM

Description

INFOID:0000000001690976

Supplies electric power to the ABS actuator and electric unit (control unit).

DTC Logic

INFOID:0000000001690977

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 

BRC-152, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000001690978

INSPECTION PROCEDURE

1.

CHECK CONNECTOR

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Check terminal for deformation, disconnection, looseness, and so on. If any malfunction is found, repair or
replace terminal.

4.

Reconnect connectors and then perform the self-diagnosis. Refer to 

BRC-141, "CONSULT-III Function

(ABS)"

.

Is any item indicated on the self-diagnosis display?

YES

>> GO TO 2

NO

>> Poor connection of connector terminal. Repair or replace connector.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT AND

GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ABS actuator and electric unit (control unit) connector.

3.

Turn ignition switch ON or OFF and check voltage between ABS
actuator and electric unit (control unit) harness connector termi-
nal and ground.

4.

Turn ignition switch OFF.

DTC

Display item

Malfunction detected condition

Possible cause

C1109

BATTERY VOLTAGE
[ABNORMAL]

When the ABS actuator and electric unit (control unit) 
power supply voltage is lower than normal.

• Harness or connector
• ABS actuator and electric unit 

(control unit)

Self-diagnosis results

BATTERY VOLTAGE [ABNORMAL]

ABS actuator and elec-

tric unit (control unit)

—

Condition

Voltage

Connector

Terminal

E125

4

Ground

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Approx. 0V

AWFIA0015ZZ

C1109 POWER AND GROUND SYSTEM

BRC-153

< COMPONENT DIAGNOSIS >

[HDC/HSA/VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

5.

Check continuity between ABS actuator and electric unit (control
unit) harness connector terminals and ground.

Is the inspection result normal?

YES

>> Check battery for terminal looseness, low voltage, etc. If any malfunction is found, repair malfunc-

tioning parts.

NO

>> Repair or replace malfunctioning components.

Special Repair Requirement

INFOID:0000000001690979

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-131, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> 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).
Refer to 

BRC-132, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

ABS actuator and electric unit

(control unit)

—

Continuity

Connector

Terminal

E125

16, 47

Ground

Yes

AWFIA0016ZZ