Infiniti FX35, FX50 (S51). Manual - part 255

C1101, C1102, C1103, C1104 WHEEL SENSOR

BRC-51

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

NO

>> Repair or replace error-detected parts.

4.

CHECK WHEEL SENSOR HARNESS

1.

Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel
sensor harness connector. (Also check continuity when steering wheel is turned right and left and when
sensor harness inside the wheel house is moved.)

Measurement terminal for power supply circuit

Measurement terminal for signal circuit

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

REPLACE WHEEL SENSOR

1.

Replace wheel sensor.

2.

Erase self-diagnosis results for “ABS” with CONSULT-III.

3.

Turn the ignition switch OFF.

4.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

5.

Perform self-diagnosis for “ABS” with CONSULT-III.

Is DTC “C1101”, “C1102”, “C1103” or “C1104” detected?

YES

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

NO

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005234502

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to 

BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END

ABS actuator and electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

E41

9

E27 (Front RH)

1

Existed

26

E60 (Front LH)

7

B33 (Rear RH)

6

B34 (Rear LH)

ABS actuator and electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

E41

10

E27 (Front RH)

2

Existed

5

E60 (Front LH)

29

B33 (Rear RH)

27

B34 (Rear LH)

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

E41

9, 10

E41

1, 4

Not existed

26, 5

7, 29

6, 27

BRC-52

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1105, C1106, C1107, C1108 WHEEL SENSOR

C1105, C1106, C1107, C1108 WHEEL SENSOR

Description

INFOID:0000000005234503

When the sensor rotor rotates, the magnetic field changes. Wheel sensor 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:0000000005234504

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Start the engine and drive the vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.

2.

Perform self-diagnosis for “ABS” with CONSULT-III.

Is DTC “C1105”, “C1106”, “C1107” or “C1108” detected?

YES

>> Proceed to diagnosis. Refer to 

BRC-52, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005234505

CAUTION:

Never check between wheel sensor terminals.

1.

CHECK TIRES

Check air pressure, wear and size. Refer to 

WT-80, "Tire Air Pressure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts. 

2.

CHECK SENSOR AND SENSOR ROTOR

• Check sensor rotor for damage. 
• Check wheel sensor for damage, disconnection or looseness.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair wheel sensor mount or replace sensor rotor. Then erform self-diagnosis for "ABS" with

CONSULT-III.

3.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

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

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.

C1105, C1106, C1107, C1108 WHEEL SENSOR

BRC-53

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

3.

Disconnect malfunctioning wheel sensor harness connector.

4.

Check terminal to see if it is deformed, disconnected, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK WHEEL SENSOR HARNESS

1.

Check the continuity between ABS actuator and electric unit (control unit) harness connector and wheel
sensor harness connector. (Also check continuity when steering wheel is turned right and left and when
sensor harness inside the wheel house is moved.)

Measurement terminal for power supply circuit

Measurement terminal for signal circuit

2.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace error-detected parts.

5.

REPLACE WHEEL SENSOR

1.

Replace wheel sensor.

2.

Erase self-diagnosis results for “ABS” with CONSULT-III.

3.

Turn the ignition switch OFF.

4.

Turn the ignition switch ON.

CAUTION:

Never start the engine.

5.

Perform self-diagnosis for “ABS” with CONSULT-III.

Is DTC “C1105”, “C1106”, “C1107” or “C1108” detected?

YES

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

NO

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005528305

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

ABS actuator and electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

E41

9

E27 (Front RH)

1

Existed

26

E60 (Front LH)

7

B33 (Rear RH)

6

B34 (Rear LH)

ABS actuator and electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

E41

10

E27 (Front RH)

2

Existed

5

E60 (Front LH)

29

B33 (Rear RH)

27

B34 (Rear LH)

ABS actuator and electric unit (control unit)

Continuity

Connector

Terminal

Connector

Terminal

E41

9, 10

E41

1, 4

Not existed

26, 5

7, 29

6, 27

BRC-54

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1105, C1106, C1107, C1108 WHEEL SENSOR

Always perform the neutral position adjustment for the steering angle sensor, when replacing the ABS actua-
tor and electric unit (control unit). Refer to 

BRC-9, "ADJUSTMENT OF STEERING ANGLE SENSOR NEU-

TRAL POSITION : Description"

.

>> END