Infiniti QX56 (JA60). Manual - part 138

C1155 BRAKE FLUID LEVEL SWITCH

BRC-65

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

Always perform calibration of decel G sensor when replacing the ABS actuator and electric unit (control unit).

Refer to 

BRC-9, "CALIBRATION OF DECEL G SENSOR : Description"

.

>> END

BRC-66

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1156 ST ANG SEN COM CIR

C1156 ST ANG SEN COM CIR

Description

INFOID:0000000005148033

The steering angle sensor is connected to the ABS actuator and electric unit (control unit) in addition to CAN

lines. CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle

multiplex communication line with high data communication speed and excellent error detection ability. Many

electronic control units are equipped onto a vehicle, and each control unit shares information and links with

other control units during operation (not independent). In CAN communication, control units are connected

with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less

wiring. Each control unit transmits/receives data but selectively reads required data only.

DTC Logic

INFOID:0000000005148034

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-66, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000005148035

1.

CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector, check ter-

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

terminal.

2. Reconnect connector and perform self-diagnosis. Refer to 

BRC-23, "CONSULT-III Function (ABS)"

.

Is above displayed on the self-diagnosis display?

YES

>> Refer to 

LAN-14, "Trouble Diagnosis Flow Chart"

.

NO

>> Inspection End

DTC

Display item

Malfunction detected condition

Possible cause

C1156

ST ANG SEN COM CIR

When steering angle sensor is not transmitting CAN 
communication signal to the ABS actuator and electric 
unit (control unit).

• Harness or connector
• CAN communication line
• Steering angle sensor
• ABS actuator and electric unit 

(control unit)

Self-diagnosis results

ST ANG SEN COM CIR

Self-diagnosis results

CAN COMM CIRCUIT

ST ANG SEN COM CIR

C1160 DECEL G SEN SET

BRC-67

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

C1160 DECEL G SEN SET

Description

INFOID:0000000005148036

The yaw rate/side/decel G sensor detects the yaw rate/side/decel G affecting the vehicle, and transmits the

data to the ABS actuator and electric unit (control unit) as an analog voltage signal.

DTC Logic

INFOID:0000000005148037

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-67, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000005148038

1.

PERFORM SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to 

BRC-23, "CONSULT-III Function

(ABS)"

.

Do self-diagnosis results indicate anything other than shown above?

YES

>> Perform repair or replacement for the item indicated.

NO

>> Perform calibration of decel G sensor. Refer to 

BRC-9, "CALIBRATION OF DECEL G SENSOR :

Description"

. GO TO 2

2.

PERFORM SELF-DIAGNOSIS AGAIN

1. Turn the ignition switch to OFF and then to ON and erase self-diagnosis results.

2. Perform ABS actuator and electric unit (control unit) self-diagnosis again. Refer to 

BRC-23, "CONSULT-III

Function (ABS)"

.

Are any self-diagnosis results displayed?

YES

>> Replace yaw rate/side/decel G sensor. Refer to 

BRC-119, "Removal and Installation"

.

NO

>> Inspection End

DTC

Display item

Malfunction detected condition

Possible cause

C1160

DECEL G SEN SET

ABS decel G sensor adjustment is incomplete.

• Decel G sensor calibration
• Yaw rate/side/decel G sensor
• ABS actuator and electric unit 

(control unit)

Self-diagnosis results

DECEL G SEN SET

Self-diagnosis results

DECEL G SEN SET

BRC-68

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

C1163 ST ANGLE SEN SAFE

C1163 ST ANGLE SEN SAFE

Description

INFOID:0000000005148039

The steering angle sensor detects the rotation amount, angular velocity and direction of the steering wheel,

and transmits the data to the ABS actuator and electric unit (control unit) via CAN communication.

DTC Logic

INFOID:0000000005148040

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-68, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000005148041

1.

ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Adjust steering angle sensor neutral position. Refer to 

BRC-8, "ADJUSTMENT OF STEERING ANGLE SEN-

SOR NEUTRAL POSITION : Description"

.

>> GO TO 2

2.

INDICATOR LAMP CHECK

Check that VDC OFF indicator lamp is off.
Is VDC OFF indicator lamp off?

YES

>> Inspection End

NO

>> Perform ABS actuator and electric unit (control unit) self-diagnosis. Refer to 

BRC-23, "CONSULT-

III Function (ABS)"

.

DTC

Display item

Malfunction detected condition

Possible cause

C1163

ST ANGL SEN SAFE

When steering angle sensor is in safe mode.

• Adjust steering angle sensor 

neutral position

Self-diagnosis results

ST ANGL SEN SAFE