Infiniti FX35, FX50 (S51). Manual — part 258

C1115 WHEEL SENSOR

BRC-63

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

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 “C1115” detected?

YES

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

NO

>> INSPECTION END

Special Repair Requirement

INFOID:0000000005528310

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-64

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1116 STOP LAMP SWITCH

C1116 STOP LAMP SWITCH

Description

INFOID:0000000005234530

The stop lamp switch transmits the stop lamp switch signal (ON/OFF) to the ABS actuator and electric unit
(control unit).

DTC Logic

INFOID:0000000005234531

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

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

Is DTC “C1116” detected?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-64, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005234532

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

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

3.

Disconnect stop lamp switch harness connector.

4.

Check terminal for deformation, disconnection, looseness, etc.

5.

Reconnect ABS actuator and electric unit (control unit) and stop lamp switch harness connectors
securely.

6.

Start the engine.

7.

Repeat pumping brake pedal carefully several times, and perform self-diagnosis for “ABS” with CON-
SULT-III.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Poor connection of harness connector terminal. Repair or replace error-detected parts.

2.

CHECK STOP LAMP SWITCH CLEARANCE

Check stop lamp switch clearance. Refer to

BR-7, "Inspection and Adjustment"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Adjust stop lamp switch clearance. Refer to

BR-7, "Inspection and Adjustment"

.

3.

CHECK STOP LAMP SWITCH

Check stop lamp switch. Refer to

BRC-65, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Replace stop lamp switch. Refer to

BR-18, "Exploded View"

.

4.

CHECK STOP LAMP SWITCH CIRCUIT

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

DTC

Display item

Malfunction detected condition

Possible cause

C1116

STOP LAMP SW

When a stop lamp switch signal is not input where the
brake pedal is depressed.

• Harness or connector
• Stop lamp switch
• ABS actuator and electric unit

(control unit)

C1116 STOP LAMP SWITCH

BRC-65

< 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

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

NO

>> Repair or replace error-detected parts.

Component Inspection

INFOID:0000000005234533

1.

CHECK STOP LAMP SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check the continuity between stop lamp switch harness connector terminals.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace stop lamp switch. Refer to

BR-18, "Exploded View"

.

Special Repair Requirement

INFOID:0000000005528311

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)

Condition

Voltage

Connector

Terminal

E41

30

Brake pedal is depressed

Battery voltage

Brake pedal is released

Approx. 0 V

Stop lamp switch

Condition

Continuity

Terminal

1 – 2

Release stop lamp switch
(When brake pedal is depressed.)

Existed

Push stop lamp switch
(When brake pedal is released.)

Not existed

BRC-66

< DTC/CIRCUIT DIAGNOSIS >

[VDC/TCS/ABS]

C1120, C1122, C1124, C1126 IN ABS SOL

C1120, C1122, C1124, C1126 IN ABS SOL

Description

INFOID:0000000005234535

The solenoid valve increases, holds or decreases the fluid pressure of each brake caliper according to the sig-
nals transmitted by the ABS actuator and electric unit (control unit).

DTC Logic

INFOID:0000000005234536

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC REPRODUCTION PROCEDURE

1.

Turn the ignition switch ON.

2.

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

Is DTC “C1120”, “C1122”, “C1124” or “C1126” detected?

YES

>> Proceed to diagnosis procedure. Refer to

BRC-66, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005234537

1.

CHECK CONNECTOR

1.

Turn the ignition switch OFF.

2.

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

3.

Check terminal for deformation, disconnection, looseness, etc.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK SOLENOID, VDC SWITCH-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT

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

DTC

Display item

Malfunction detected condition

Possible cause

C1120

FR LH IN ABS SOL

When the control unit detects a malfunction in the front
LH inlet solenoid circuit.

ABS actuator and electric unit
(control unit)

C1122

FR RH IN ABS SOL

When the control unit detects a malfunction in the front
RH inlet solenoid circuit.

C1124

RR LH IN ABS SOL

When the control unit detects a malfunction in the rear LH
inlet solenoid circuit.

C1126

RR RH IN ABS SOL

When the control unit detects a malfunction in the rear
RH inlet solenoid circuit.

ABS actuator and electric unit (control unit)

—

Voltage

Connector

Terminal

E41

3

Ground

Battery voltage