Infiniti M45 (Y34). Manual — part 270

TROUBLE DIAGNOSIS

BRC-23

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

TFWA0052E

BRC-24

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

Control Unit Input/Output Signal Standard

AFS000LH

REFERENCE VALUE FROM CONSULT-II

CAUTION:

The display shows the 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

Note: Error inspection

checklist

Condition

Reference value in

normal operation

GEAR POSITION

A/T gear position

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

—

VHCL SPEED

Wheel speed

Vehicle stopped

0 (km/h)

BRC-38, "Inspection 1
Wheel Sensor System"

While driving (Note 1)

Nearly matches
the speedometer
display (

±

10% or

less)

THRTL OPENING

Throttle open/close
status (linked to the
accelerator pedal)

Do not step on the accelerator
pedal (When ignition switch is
ON)

0%

Communication circuit
between VDC/TCS/
ABS control unit and
ECM

Step on the accelerator pedal
(When ignition switch is ON)

0 to 100%

ENGINE RPM

Engine running

With engine stopped

0 rpm

Engine speed signal cir-
cuit

Engine running

Almost in accor-
dance with
tachometer display

STEERING ANGLE
SIG

Steering angle
detected by steering
angle sensor

Straight-ahead

Approx. 0

°

BRC-42, "Inspection 5
Steering Angle Sensor
System"

Steering wheel turned

–720 to 720

°

YAW RATE SEN

Yaw rate detected by
yaw rate sensor

Vehicle stopped

Approx. 0 d/s

BRC-43, "Inspection 6
Yaw Rate/Side G Sensor
System"

While driving

–70 to 70 d/s

SIDE G-SEN

Side G detected by
side G-sensor

Vehicle stopped

Approx. 0 m/s

2

BRC-43, "Inspection 6
Yaw Rate/Side G Sensor
System"

While driving

–24.3 to 24.1 m/s

2

PRESS SENSOR

Brake fluid pressure
detected by pressure
sensor

Do not step on the Brake pedal
(When ignition switch is ON)

Approx. 0 bar

BRC-40, "Inspection 4
Pressure Sensor Sys-
tem"

Step on the Brake pedal
(When ignition switch is ON)

–40 to 300 bar

ABS CONT VOLT

Battery voltage sup-
plied to VDC/TCS/
ABS control unit

Ignition switch ON

10 to 16V

BRC-52, "Inspection 11
VDC/TCS/ABS Control
Unit Power and Ground
Systems"

STOP LAMP SW

Brake pedal operation

Brake pedal depressed

ON

BRC-51, "Inspection 10
Stop Lamp Switch Sys-
tem"

Brake pedal not depressed

OFF

PARK BRAKE SW

Parking brake status

Parking brake depressed

ON

Parking brake switch cir-
cuit

Parking brake not depressed

OFF

OFF SW

VDC OFF switch
ON/OFF status

VDC OFF switch ON
(When the VDC OFF lamp
ON)

ON

BRC-56, "VDC OFF
SWITCH"

When VDC OFF switch OFF
(When the VDC OFF lamp
OFF)

OFF

TROUBLE DIAGNOSIS

BRC-25

[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: ON/OFF timing of ABS warning lamp
ON: Approximately 1 sec. After turning on the ignition switch or when an error is detected.
OFF: Approximately 1 sec. After the ignition switch is turned on (when system is normal).
Note 3: VDC OFF lamp ON/OFF timing
ON: Approximately 1 sec. After the ignition switch is turned on, an error is detected, or the VDC OFF switch is on
OFF: Approximately 1 sec. After the ignition switch is turned on (when system is normal) and the VDC OFF switch is off

ABS WARN LAMP

ABS warning lamp ON
condition (Note 2)

ABS warning lamp ON

ON

BRC-37, "BASIC
INSPECTION 3 ABS
WARNING LAMP, VDC
OFF LAMP, SLIP LAMP
INSPECTION"

ABS warning lamp OFF

OFF

VDC OFF LAMP

VDC OFF lamp on
condition (Note 3)

When the VDC OFF lamp ON

ON

BRC-37, "BASIC
INSPECTION 3 ABS
WARNING LAMP, VDC
OFF LAMP, SLIP LAMP
INSPECTION"

When the VDC OFF lamp
OFF

OFF

EV SIGNAL
AV SIGNAL

Operation status of all
solenoids

When the actuator solenoid
operates or during a fail-safe

ON

BRC-45, "Inspection 7
Solenoid and VDC
Change-Over Valve Sys-
tem"

When the solenoid valve relay
operates and the actuator
solenoid does not operate

OFF

USV SIGNAL
MAV SIGNAL

VDC switch-over valve
status

During actuator change-over
valve operation or during a fail-
safe

ON

BRC-45, "Inspection 7
Solenoid and VDC
Change-Over Valve Sys-
tem"

When the solenoid valve relay
operates and the actuator
change-over valve does not
operate

OFF

M/R OUTPUT

Actuator motor and
motor relay status (ON/
OFF)

When actuator motor and
motor relay are active
("ACTIVE TEST" with CON-
SULT-II).

ON

BRC-48, "Inspection 8
ABS Motor and Motor
Relay System"

When the actuator motor and
motor relay are not operating

OFF

Monitor item

Display content

Data monitor

Note: Error inspection

checklist

Condition

Reference value in

normal operation

BRC-26

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS

CONSULT-II Functions

AFS000LI

CONSULT-II MAIN FUNCTION

In a diagnosis function (main function), there are “WORK SUPPORT”, “SELF-DIAGNOSTIC RESULTS”,
“DATA MONITOR”, “CAN DIAG SUPPORT MNTR”, “ACTIVE TEST”, “FUNCTION TEST”, “ECU PART NUM-
BER”.

CONSULT-II BASIC OPERATION PROCEDURE

1.

Turn ignition switch OFF.

2.

Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.

3.

Turn ignition switch ON.

4.

Touch “START (NISSAN BASED VHCL)”.

Diagnostic

test mode

Function

Reference

WORK SUP-

PORT

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-
NOSTIC
RESULTS

Self-diagnostic results can be read and erased quickly.

BRC-27, "SELF-DIAGNOSIS"

DATA MONI-
TOR

Input/Output data in the VDC/TCS/ABS control unit can be read.

BRC-30, "DATA MONITOR"

CAN DIAG
SUPPORT
MNTR

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

—

ACTIVE TEST

Diagnostic Test Mode in which CONSULT-II drives some actuators apart from the
VDC/TCS/ABS control unit and also shifts some parameters in a specified range.

BRC-31, "ACTIVE TEST"

FUNCTION
TEST

Conducted by CONSULT-II instead of a technician to determine whether each sys-
tem is “OK” or “NG”.

—

ECU PART
NUMBER

VDC/TCS/ABS control unit part number can be read.

—

PBIB0196E

SKIA3098E