Nissan Pathfinder. Manual - part 243

SYSTEM

BRC-31

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

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*: Communication line between yaw rate/side/decel G sensor and ABS actuator and electric unit (control unit)

TCM

Mainly transmits the following signal to ABS actuator and electric unit (control unit) via CAN 
communication:
• Shift position signal

Combination meter

Mainly transmits the following signals to ABS actuator and electric unit (control unit) via CAN 
communication:
• Brake fluid level switch signal
• Parking brake switch signal
Mainly receives the following signals from ABS actuator and electric unit (control unit) via CAN 
communication:
• VDC warning lamp signal
• VDC OFF indicator lamp signal

Component

Signal description

BRC-32

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL
UNIT)]

CONSULT Function

INFOID:0000000009177257

CAUTION:

After disconnecting the CONSULT vehicle interface (VI) from the data link connector, the ignition must

be cycled OFF 

→ ON (for at least 5 seconds) → OFF. If this step is not performed, the BCM may not go

to "sleep mode", potentially causing a discharged battery and a no-start condition.

APPLICATION ITEMS

CONSULT can display each diagnostic item using the diagnostic test modes as follows.

*

: The following diagnosis information is erased by erasing.

• DTC
• Freeze frame data (FFD)

ECU IDENTIFICATION

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

SELF DIAGNOSTIC RESULT

Refer to 

BRC-42, "DTC Index"

. 

When “CRNT” is displayed on self-diagnosis result,

• The system is presently malfunctioning.

When “PAST” is displayed on self-diagnosis result,

• System malfunction in the past is detected, but the system is presently normal.

Freeze frame data (FFD)

The following vehicle status is recorded when DTC is detected and is displayed on CONSULT.

ACTIVE TEST

The active test is used to determine and identify details of a malfunction, based on self-diagnosis test results

and data obtained in the DATA MONITOR. In response to instructions from CONSULT, instead of those from

ABS actuator and electric unit (control unit) on the vehicle, a drive signal is sent to the actuator to check its

operation.

CAUTION:

• Never perform ACTIVE TEST while driving the vehicle.

• Always bleed air from brake system before active test.

• Never perform active test when system is malfunctioning.

NOTE:

Mode

Function description

ECU identification

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

Self Diagnostic Result

Self-diagnostic results and freeze frame data can be read and erased quickly.

*

DATA MONITOR

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

ACTIVE TEST

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

WORK SUPPORT

Components can be quickly and accurately adjusted.

Item name

Display item

IGN counter
(0 

− 39)

The number of times that ignition switch is turned ON after the DTC is detected is displayed.
• When “0” is displayed: It indicates that the system is presently malfunctioning.
• When except “0” is displayed: It indicates that system malfunction in the past is detected, but the system is pres-

ently normal.
NOTE:
Each time when ignition switch is turned OFF to ON, numerical number increases in 1 

→ 2 → 3...38 → 39. When 

the operation number of times exceeds 39, the number do not increase and “39” is displayed until self-diagnosis 
is erased.

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-33

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

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• When active test is performed while depressing the pedal, the pedal depressing stroke may change. This is

not a malfunction.

• “TEST IS STOPPED” is displayed approx. 10 seconds after operation start.

• When performing active test again after “TEST IS STOPPED” is displayed, select “BACK”.

• ABS warning lamp, brake warning lamp and VDC warning lamp may turn ON during active test. This is not a

malfunction.

ABS IN Valve and ABS OUT Valve

When “Up”, “Keep” or “Down” is selected on display screen, the following items are displayed when system is

normal.

*: Immediately after being selected, status is “On”. Status changes to “Off” after approx. 2 seconds.

ABS IN Valve (ACT) and ABS OUT Valve (ACT)

When “Up”, “ACT UP” or “ACT KEEP” is selected on display screen, the following items are displayed when

system is normal.

*: Immediately after being selected, status is “On”. Status changes to “Off” after approx. 10 seconds.

ABS MOTOR

When “On” or “Off” is selected on display screen, the following items are displayed when system is normal.

Test item

Display Item

Display

Up

Keep

Down

FR RH SOL

FR RH IN SOL

Off

On*

On*

FR RH OUT SOL

Off

Off

On*

FR LH SOL

FR LH IN SOL

Off

On*

On*

FR LH OUT SOL

Off

Off

On*

RR RH SOL

RR RH IN SOL

Off

On*

On*

RR RH OUT SOL

Off

Off

On*

RR LH SOL

RR LH IN SOL

Off

On*

On*

RR LH OUT SOL

Off

Off

On*

Test item

Display Item

Display

Up

ACT UP

ACT KEEP

FR RH ABS SOLE-
NOID (ACT)

FR RH IN SOL

Off

Off

Off

FR RH OUT SOL

Off

Off

Off

CV1

Off

Off

Off

CV2

Off

On*

On*

FR LH ABS SOLE-
NOID (ACT)

FR LH IN SOL

Off

Off

Off

FR LH OUT SOL

Off

Off

Off

CV1

Off

On*

On*

CV2

Off

Off

Off

RR RH ABS SOLE-
NOID (ACT)

RR RH IN SOL

Off

Off

Off

RR RH OUT SOL

Off

Off

Off

CV1

Off

On*

On*

CV2

Off

Off

Off

RR LH ABS SOLE-
NOID (ACT)

RR LH IN SOL

Off

On*

Off

RR LH OUT SOL

Off

Off

Off

CV1

Off

Off

Off

CV2

Off

On*

On*

BRC-34

< SYSTEM DESCRIPTION >

[VDC/TCS/ABS]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

NOTE:

Display occasionally changes On/Off for a moment after ignition switch is turned ON. This is an operation for

checking purposes and is not a malfunction.

DATA MONITOR

×: Applicable

Test item

Display Item

Display

On

Off

ABS MOTOR

MOTOR RELAY

On

Off

ACTUATOR RLY

(Note)

On

On

Item (Unit)

Monitor item selection

Note

ECU INPUT SIG-

NALS

MAIN SIGNALS

FR LH SENSOR
[km/h (MPH)]

×

×

Wheel speed calculated by front LH wheel sensor is dis-
played.

FR RH SENSOR
[km/h (MPH)]

×

×

Wheel speed calculated by front RH wheel sensor is dis-
played.

RR LH SENSOR
[km/h (MPH)]

×

×

Wheel speed calculated by rear LH wheel sensor is dis-
played.

RR RH SENSOR
[km/h (MPH)]

×

×

Wheel speed calculated by rear RH wheel sensor is dis-
played.

DECEL G-SEN
(m/s

2

)

×

×

Decel G detected by decel G sensor is displayed.

FR RH IN SOL
(On/Off)

×

Operation status of front RH wheel ABS IN valve is dis-
played.

FR RH OUT SOL
(On/Off)

×

Operation status of front RH wheel ABS OUT valve is dis-
played.

FR LH IN SOL
(On/Off)

×

Operation status of front LH wheel ABS IN valve is dis-
played.

FR LH OUT SOL
(On/Off)

×

Operation status of front LH wheel ABS OUT valve is dis-
played.

RR RH IN SOL
(On/Off)

×

Operation status of rear RH wheel ABS IN valve is dis-
played.

RR RH OUT SOL
(On/Off)

×

Operation status of rear RH wheel ABS OUT valve is dis-
played.

RR LH IN SOL
(On/Off)

×

Operation status of rear LH wheel ABS IN valve is dis-
played.

RR LH OUT SOL
(On/Off)

×

Operation status of rear LH wheel ABS OUT valve is dis-
played.

EBD WARN LAMP
(On/Off)

Brake warning lamp ON/OFF status is displayed. 

(Note 1)

STOP LAMP SW
(On/Off)

×

×

Stop lamp switch signal input status is displayed.

MOTOR RELAY
(On/Off)

×

ABS motor and motor relay status is displayed.

ACTUATOR RLY
(On/Off)

×

ABS actuator relay status is displayed.

ABS WARN LAMP
(On/Off)

×

ABS warning lamp ON/OFF status is displayed. 

(Note 1)

OFF LAMP
(On/Off)

×

VDC OFF indicator lamp ON/OFF status is displayed.

(Note 1)

OFF SW

×

×

VDC OFF switch status is displayed