Infiniti G37 Coupe. Manual - part 276

BRC-78

< COMPONENT DIAGNOSIS >

[VDC/TCS/ABS]

SLIP INDICATOR LAMP

SLIP INDICATOR LAMP

Description

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×

: ON –: OFF

Component Function Check

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1.

CHECK SLIP INDICATOR LAMP OPERATION

Check that the lamp illuminates for approximately 1 second after the ignition switch is turned ON.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to diagnosis procedure. Refer to 

BRC-78, "Diagnosis Procedure"

.

Diagnosis Procedure

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1.

CHECK SELF-DIAGNOSIS

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

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Check items displayed by self-diagnosis.

2.

CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to 

MWI-35, "Diagnosis Descrip-

tion"

.

Is the inspection result normal?

YES

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

NO

>> Repair or replace combination meter.

Condition

SLIP indicator lamp

Ignition switch OFF

–

For 1 second after turning ignition switch ON

×

1 second later after turning ignition switch ON

–

VDC/TCS function is malfunctioning.

×

ABS function is malfunctioning.

×

EBD function is malfunctioning.

×

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-79

< ECU DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

ECU DIAGNOSIS

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Reference Value

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VALUES ON THE DIAGNOSIS TOOL

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.

CONSULT-III MONITOR ITEM

 Monitor item

Display content

Data monitor

Condition

Reference value in 

normal operation

FR LH SENSOR

Wheel speed

Vehicle stopped

0 [km/h (MPH)]

Vehicle running 
(Note 1)

Nearly matches the 

speed meter display 

(

±

 10 % or less)

FR RH SENSOR

Wheel speed

Vehicle stopped

0 [km/h (MPH)]

Vehicle running 
(Note 1)

Nearly matches the 

speed meter display 

(

±

 10 % or less)

RR LH SENSOR

Wheel speed

Vehicle stopped

0 [km/h (MPH)]

Vehicle running 
(Note 1)

Nearly matches the 

speed meter display 

(

±

 10 % or less)

RR RH SENSOR

Wheel speed

Vehicle stopped

0 [km/h (MPH)]

Vehicle running 
(Note 1)

Nearly matches the 

speed meter display 

(

±

 10 % or less)

STOP LAMP SW

Stop lamp switch signal status

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

 SLCT LVR POSI

A/T selector lever position

P position
R position
N position
D position

P
R
N
D

OFF SW

VDC OFF switch ON/OFF

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

Vehicle stopped

Approx. 0 d/s

Turning right

Negative value

Turning left

Positive value

ACCEL POS SIG 

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

Accelerator pedal not depressed (ignition 
switch is ON)

0 %

Depress accelerator pedal (ignition 
switch is ON)

0 - 100 %

BRC-80

< ECU DIAGNOSIS >

[VDC/TCS/ABS]

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

SIDE G-SENSOR

Transverse G detected by side G sensor

Vehicle stopped

Approx. 0 m/s

2

Turning right

Negative value 

(m/s

2

)

Turning left

Positive value

(m/s

2

)

STR ANGLE SIG

Steering angle detected by steering angle 
sensor

Straight-ahead

±

2.5

°

Turn 90

°

 to right

Approx. +90

°

Turn 90

°

 to left

Approx. 

−

90

°

PRESS SENSOR

Brake fluid pressure detected by pressure 
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

With engine running

With engine stopped

0 [tr/min (rpm)]

Engine running

Almost in accor-
dance with tachome-
ter display

FLUID LEV SW

Brake fluid level switch signal status

When brake fluid level switch ON

On

When brake fluid level switch OFF 

Off

PARK BRAKE SW

Parking brake switch signal status

Parking brake switch is active

On

Parking brake switch is inactive

Off

FR RH IN SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

FR RH OUT SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

FR LH IN SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

FR LH OUT SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

RR RH IN SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

 Monitor item

Display content

Data monitor

Condition

Reference value in 

normal operation

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

BRC-81

< ECU DIAGNOSIS >

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

N

O

P

RR RH OUT SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

RR LH IN SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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

RR LH OUT SOL

Operation status of each solenoid valve 

Actuator (solenoid valve) is active (“AC-
TIVE TEST” with CONSULT-III) or actua-
tor 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 op-
erating

On

When the motor relay and motor are not 
operating

Off

ACTUATOR RLY
(Note 2)

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 3)

When ABS warning lamp is ON

On

When ABS warning lamp is OFF

Off

OFF LAMP

VDC OFF indicator lamp
(Note 3)

When VDC OFF indicator lamp is ON

On

When VDC OFF indicator lamp is OFF

Off

SLIP LAMP

SLIP indicator lamp
(Note 3)

When SLIP indicator lamp is ON

On

When SLIP indicator lamp is OFF

Off

BST OPER SIG

Not applied but displayed

—

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

VDC FAIL SIG

VDC fail-safe signal

In VDC fail-safe

On

VDC is normal

Off

 Monitor item

Display content

Data monitor

Condition

Reference value in 

normal operation