Infiniti M35/M45 Y50. Manual - part 330

 

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Infiniti M35/M45 Y50. Manual - part 330

 

 

TROUBLE DIAGNOSIS

BRC-21

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Control Unit Input/Output Signal Standard

NFS000RH

REFERENCE VALUE FROM CONSULT-II

CAUTION:

The display shows ABS actuator and electric unit (control unit) calculation data, so a normal value
might be displayed even in the event the output circuit (harness) is open or short-circuited.

 Monitor item

Display content

Data monitor

Condition

Reference value in nor-

mal operation

FR LH SENSOR
FR RH SENSOR
RR LH SENSOR
RR RH SENSOR

Wheel speed

Vehicle stopped

0 [km/h (MPH)]

Vehicle running (Note 1)

Nearly matches the 

speedometer display

(

±

 10 % or less)

STOP LAMP SW

Brake pedal operation

When brake pedal is depressed

ON

When brake pedal is not depressed

OFF

BATTERY VOLT

Battery voltage supplied to the ABS 
actuator and electric unit (control unit)

Ignition switch ON

10 – 16 V

GEAR

Gear position determined by TCM

1st gear 
2nd gear
3rd gear
4th gear
5th gear

1
2
3
4
5

SLCT LVR POSI

A/T select lever position

P position
R position
N position
D position

P
R
N
D

OFF SW

VDC OFF switch

VDC OFF switch :ON
(When VDC OFF indicator lamp is ON)

ON

VDC OFF switch :OFF
(When VDC OFF indicator lamp is OFF)

OFF

YAW RATE SEN

Yaw rate detected by yaw rate/side G 
sensor

When vehicle stop

Approx. 0 d/s

When vehicle turning

(–75 to 75 d/s)

4WD MODE MON
(Note 2)

AWD activated

Engine running 

AUTO

ACCEL POS SIG 

Throttle actuator opening/closing is dis-
played (linked with accelerator pedal)

Accelerator pedal not depressed
(Engine stopped)

0 %

Depress accelerator pedal
(Engine stopped)

0 - 100 %

SIDE G-SENSOR

Transverse G detected by side G sensor

Vehicle stopped

Approx. 0 m/s

2

Vehicle turning right

Negative value 

(m/s

2

 )

Vehicle turning left

Positive value

(m/s

2

 )

STR ANGLE SIG

Steering angle detected by steering 
angle sensor

Straight-ahead

Approx. 0

°

Steering wheel turned

–720 to 720

°

 

PRESS SENSOR

Brake fluid pressure detected by pres-
sure sensor

With ignition switch turned ON and brake 
pedal released

Approx. 0 bar

With ignition switch turned ON and brake 
pedal depressed

–40 to 300 bar

ENGINE RPM

Engine speed

With engine stopped

0 rpm

Engine running

Almost in accordance 

with tachometer display

BRC-22

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

FLUID LEV SW

Brake fluid level switch

Brake fluid level switch ON

ON

Brake fluid level switch OFF 

OFF

PARK BRAKE SW

Parking brake switch

Parking brake switch is active

ON

Parking brake switch is inactive

OFF

FR RH IN SOL
FR RH OUT SOL
FR LH IN SOL
FR LH OUT SOL
RR RH IN SOL
RR RH OUT SOL
RR LH IN SOL
RR LH OUT SOL

Operation status of all solenoid valve 

Actuator (solenoid valve) is active 
(“ACTIVE TEST” with CONSULT-II) or 
actuator relay is inactive (in fail-safe 
mode)

ON

When the actuator (solenoid valve) is not 
active and actuator relay is active (igni-
tion switch ON)

OFF

MOTOR RELAY

Motor and motor relay operation

When the motor relay and motor are 
operating

ON

When the motor relay and motor are not 
operating

OFF

ACTUATOR RLY
(Note 3)

Actuator relay operation

When the actuator relay is operating

ON

When the actuator relay is not operating

OFF

ABS WARN LAMP

ABS warning lamp
(Note 4)

When ABS warning lamp is ON

ON

When ABS warning lamp is OFF

OFF

OFF LAMP

VDC OFF indicator lamp
(Note 4)

When VDC OFF indicator lamp is ON

ON

When VDC OFF indicator lamp is OFF

OFF

SLIP LAMP

SLIP indicator lamp
(Note 4)

When SLIP indicator lamp is ON

ON

When SLIP indicator lamp is OFF

OFF

4WD FAIL REQ
(Note 2)

AWD control unit fail-safe signal 

When AWD control unit is fail-safe mode 

ON

When AWD control unit is normal

OFF

SNOW MODE SW

Snow mode switch

When snow mode switch is ON

ON

When snow mode switch is OFF

OFF

BST OPER SIG

Not applied but displayed

OFF

M-MODE SIG

Manual mode operation

When the manual mode is active

ON

When the manual mode is inactive

OFF

EBD SIGNAL

EBD operation

EBD is active

ON

EBD is inactive

OFF

ABS SIGNAL

ABS operation

ABS is active

ON

ABS is inactive

OFF

TCS SIGNAL

TCS operation

TCS is active

ON

TCS is inactive

OFF

VDC SIGNAL

VDC operation

VDC is active

ON

VDC is inactive

OFF

EBD FAIL SIG

EBD fail-safe signal

In EBD fail-safe

ON

EBD is normal

OFF

ABS FAIL SIG

ABS fail-safe signal

In ABS fail-safe

ON

ABS is normal

OFF

TCS FAIL SIG

TCS fail-safe signal

In TCS fail-safe

ON

TCS is normal

OFF

 Monitor item

Display content

Data monitor

Condition

Reference value in nor-

mal operation

TROUBLE DIAGNOSIS

BRC-23

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Note 1: Confirm tire pressure is normal.
Note 2: Only AWD models.
Note 3: A brief moment of ON/OFF condition occurs every 20 seconds after ignition switch turned ON. This is not malfunction because it
is an operation for checking.
Note 4: On and off timing for warning lamp and indicator lamp. Refer to 

BRC-33, "ON and OFF Timing for Warning Lamp and Indicator

Lamp"

 .

CONSULT-II Functions (ABS)

NFS000QF

CONSULT-II MAIN FUNCTION 

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.

CONSULT-II SETTING PROCEDURE

Refer to 

GI-38, "CONSULT-II Start Procedure"

 .

VDC FAIL SIG

VDC fail-safe signal

In VDC fail-safe

ON

VDC is normal

OFF

CRANKING SIG

Crank operation

Crank is active

ON

Crank is inactive

OFF

USV[FR-RL]
USV[FL-RR]
HSV[FR-RL]
HSV[FL-RR]
(Note 3)

VDC switch-over valve

When actuator (switch-over valve) is 
active (“ACTIVE TEST” with CONSULT-
II) or actuator relay is inactive (when in 
fail-safe mode)

ON

When actuator (switch-over valve) is not 
active and actuator relay is active (igni-
tion switch ON)

OFF

V/R OUTPUT
(Note 3)

Solenoid valve relay activated

When the solenoid valve relay is active

ON

When the solenoid valve relay is not 
active (in the fail-safe mode)

OFF

M/R OUTPUT

Actuator motor and motor relay activated

When the actuator motor and motor relay 
are active (“ACTIVE TEST” with CON-
SULT-II)

ON

When the actuator motor and motor relay 
are inactive

OFF

 Monitor item

Display content

Data monitor

Condition

Reference value in nor-

mal operation

Diagnostic test mode

Function

Reference

WORK SUPPORT

This mode enables a technician to adjust some devices faster and 
more accurately by following the indications on CONSULT-II.

BRC-6, "Adjustment of Steer-
ing Angle Sensor Neutral 
Position"

SELF-DIAG RESULTS

Self-diagnostic results can be read and erased quickly.

BRC-24, "Self-Diagnosis"

DATA MONITOR

Input/Output data in the ABS actuator and electric unit (control unit) 
can be read.

BRC-28, "Data Monitor"

CAN DIAG SUPPORT MNTR

The results of transmit/receive diagnosis of communication can be 
read.

LAN-44, "CAN Diagnostic 
Support Monitor"

ACTIVE TEST

Diagnostic Test Mode in which CONSULT-II drives some actuators 
apart from the ABS actuator and electric unit (control unit) and also 
shifts some parameters in a specified range.

BRC-30, "Active Test"

FUNCTION TEST

Performed by CONSULT-II instead of a technician to determine 
whether each system is “OK” or “NG”.

ECU PART NUMBER

ABS actuator and electric unit (control unit) part number can be read.

BRC-24

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

Self-Diagnosis

NFS000QG

OPERATION PROCEDURE

1.

Turn ignition switch OFF.

2.

Perform “CONSULT-II Starting Procedure”. Refer to 

GI-38, "CONSULT-II Start Procedure"

 .

3.

Turn ignition switch ON.

4.

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

5.

After stopping vehicle, with the engine running, touch “ABS”, “SELF-DIAG RESULTS” in order on the
CONSULT-II screen. 

CAUTION:

If “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning on the
ignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,
repeat the operation from step 1.

6.

The self-diagnostic results are displayed. (Touch “PRINT” to print out self-diagnostic results, if necessary.)

Check ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp if “NO FAILURE” is dis-
played. Refer to 

BRC-50, "Warning Lamp and Indicator Lamp Circuit"

 .

7.

Perform the appropriate inspection from display item list, and repair or replace the malfunctioning compo-
nent.Refer to 

BRC-25, "DISPLAY ITEM LIST"

 .

8.

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

CAUTION:

When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning
lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp will not turn off even
when the system is normal unless the vehicle is driving at approximately 30 km/h (19 MPH) or
more for approximately 1 minute.

ERASE MEMORY

1.

Turn ignition switch OFF.

2.

Start engine and touch “ABS”, “SELF-DIAG RESULTS”, “ERASE MEMORY” in order on the CONSULT-II
screen to erase the diagnostic memory.
If “ABS” is not indicated, go to 

GI-39, "CONSULT-II Data Link Connector (DLC) Circuit"

 .

CAUTION:

If the diagnostic memory is not erased, re-perform the operation from step 4.

3.

Perform self-diagnosis again, and make sure that diagnostic memory is erased.

4.

Drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make
sure that the ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp
turn off.

NOTE:

Brake warning lamp will turn on in case of parking brake operation (when switch is ON) or of brake fluid
level switch operation (when brake fluid is insufficient).

VDC OFF switch should not stay "ON" position.

 

 

 

 

 

 

 

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