Nissan Pathfinder (2012 year). Manual - part 95

BRC-26

< SYSTEM DESCRIPTION >

[TYPE 1]

EBD

EBD

System Diagram

INFOID:0000000007818425

System Description

INFOID:0000000007356682

• Electric Brake force Distribution is a following function. ABS actuator and electric unit (control unit) detects

subtle slippages between the front and rear wheels during braking. Then it electronically controls the rear

braking force (brake fluid pressure) to reduce rear wheel slippage. Accordingly, it improves vehicle stability.

• Electrical system diagnosis by CONSULT is available.

AWFIA0453GB

August 2012

2012 Pathfinder

EBD

BRC-27

< SYSTEM DESCRIPTION >

[TYPE 1]

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Component Parts Location

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AWFIA0844GB

1.

Front wheel sensor LH E18
Front wheel sensor RH E117

2.

Brake fluid level switch E21

3.

ABS actuator and electric unit (control 
unit) E125

4.

Combination meter M24

5.

Steering angle sensor (behind spiral 
cable) M47

6.

Yaw rate/side/decel G sensor B73

August 2012

2012 Pathfinder

BRC-28

< SYSTEM DESCRIPTION >

[TYPE 1]

EBD

Component Description

INFOID:0000000007818431

7.

Rear wheel sensor LH C13

8.

Rear wheel sensor RH C13

9.

VDC OFF switch M154

10. Stop lamp switch E38

Component parts

Reference

ABS actuator and electric unit (control unit)

Pump

BRC-43, "Description"

Motor

Actuator relay

BRC-59, "Description"

Solenoid valve

BRC-52, "Description"

VDC switch-over valve
(CV1, CV2, SV1, SV2)

BRC-70, "Description"

Wheel sensor

BRC-34, "Description"

Yaw rate/side/decel G sensor

BRC-45, "Description"

Stop lamp switch

BRC-50, "Description"

Steering angle sensor

BRC-61, "Description"

Brake fluid level switch

BRC-64, "Description"

VDC OFF switch

BRC-74, "Description"

ABS warning lamp

BRC-76, "Description"

Brake warning lamp

BRC-77, "Description"

VDC OFF indicator lamp

BRC-78, "Description"

SLIP indicator lamp

BRC-80, "Description"

August 2012

2012 Pathfinder

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-29

< SYSTEM DESCRIPTION >

[TYPE 1]

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

CONSULT Function (ABS)

INFOID:0000000007356685

FUNCTION

CONSULT can display each diagnostic item using the following direct diagnostic modes.

SELF DIAGNOSTIC RESULT

Operation Procedure

1. Before performing the self-diagnosis, start engine and drive vehicle at 30 km/h (19 MPH) or more for

approximately 1 minute.

How to Erase Self-diagnosis Results

1. After erasing DTC memory, start engine and 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.

CAUTION:

If memory cannot be erased, perform applicable diagnosis.

NOTE:

• When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warning 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.

• 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.

Display Item List

Refer to 

BRC-86, "DTC No. Index"

.

DATA MONITOR

Direct Diagnostic Mode

Description

ECU Identification

The ABS actuator and electric unit (control unit) part number is displayed.

Self Diagnostic Result

The ABS actuator and electric unit (control unit) self diagnostic results are displayed.

Data Monitor

The ABS actuator and electric unit (control unit) input/output data is displayed in real time.

Active Test

The ABS actuator and electric unit (control unit) activates outputs to test components.

Work support

The settings for ABS actuator and electric unit (control unit) functions can be changed.

CAN Diag Support Monitor

The result of transmit/receive diagnosis of CAN communication is displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

FR LH SENSOR 
 (km/h, mph)

×

×

×

Wheel speed (km/h, mph) calculated by front LH 
wheel sensor signal is displayed.

FR RH SENSOR 
 (km/h, mph)

×

×

×

Wheel speed (km/h, mph) calculated by front RH 
wheel sensor signal is displayed.

RR LH SENSOR 
 (km/h, mph)

×

×

×

Wheel speed (km/h, mph) calculated by rear LH 
wheel sensor signal is displayed.

RR RH SENSOR
 (km/h, mph)

×

×

×

Wheel speed (km/h, mph) calculated by rear RH 
wheel sensor signal is displayed.

DECEL G-SEN
 (G)

×

×

×

Longitudinal acceleration (G) detected by decel G-
sensor is displayed. 

August 2012

2012 Pathfinder

BRC-30

< SYSTEM DESCRIPTION >

[TYPE 1]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

FR RH IN SOL
(On/Off)

–

×

×

Front RH IN ABS solenoid (On/Off) status is dis-
played.

FR RH OUT SOL
(On/Off)

–

×

×

Front RH OUT ABS solenoid (On/Off) status is dis-
played.

FR LH IN SOL
(On/Off)

–

×

×

Front LH IN ABS solenoid (On/Off) status is displayed.

FR LH OUT SOL
(On/Off)

–

×

×

Front LH OUT ABS solenoid (On/Off) status is dis-
played.

RR RH IN SOL
(On/Off)

–

×

×

Rear RH IN ABS solenoid (On/Off) status is displayed.

RR RH OUT SOL
(On/Off) 

–

×

×

Rear RH OUT ABS solenoid (On/Off) status is dis-
played.

RR LH IN SOL
(On/Off)

–

×

×

Rear LH IN ABS solenoid (On/Off) status is displayed.

RR LH OUT SOL
(On/Off)

–

×

×

Rear LH OUT ABS solenoid (On/Off) status is dis-
played.

EBD WARN LAMP
(On/Off)

–

–

×

Brake warning lamp (On/Off) status is displayed.

STOP LAMP SW
(On/Off)

×

×

×

Stop lamp switch (On/Off) status is displayed.

MOTOR RELAY
(On/Off)

–

×

×

ABS motor relay signal (On/Off) status is displayed.

ACTUATOR RLY
(On/Off)

–

×

×

ABS actuator relay signal (On/Off) status is displayed.

ABS WARN LAMP
(On/Off)

–

×

×

ABS warning lamp (On/Off) status is displayed.

OFF LAMP
(On/Off)

–

×

×

VDC OFF Lamp (On/Off) status is displayed.

OFF  SW
(On/Off)

×

×

×

VDC OFF switch (On/Off) status is displayed.

SLIP LAMP
(On/Off)

–

×

×

SLIP indicator lamp (On/Off) status is displayed.

BATTERY VOLT
(V)

×

×

×

Voltage (V) supplied to ABS actuator and electric unit 
(control unit) is displayed.

GEAR
(1, 2, 3, 4, 5)

×

×

×

Gear position (1, 2, 3, 4, 5) judged by  transmission 
range switch signal is displayed.

SLCT LVR POSI
(P, N, D)

×

×

×

Shift position (P, N, D) judged by  transmission range 
switch signal.

ENGINE SPEED
(rpm)

×

×

×

Engine speed (rpm) judged by CAN communication 
signal is displayed.

YAW RATE SEN
(d/s)

×

×

×

Yaw rate (d/s) detected by yaw rate sensor is dis-
played.

R POSI SIG
(On/Off)

–

–

×

Reverse shift position (On/Off) judged by  transmis-
sion range switch signal.

4WD FAIL REQ
(On/Off)

–

–

×

Transfer control unit fail-safe mode (On/Off) is dis-
played.

N POSI SIG
(On/Off)

–

–

×

Shift position judged by  transmission range switch 
signal.

P POSI SIG
(On/Off)

–

–

×

Shift position judged by  transmission range switch 
signal.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

August 2012

2012 Pathfinder

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-31

< SYSTEM DESCRIPTION >

[TYPE 1]

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: Applicable

–: Not applicable

WORK SUPPORT

ACTIVE TEST

CAUTION:

CV1
(On/Off)

–

–

×

Front side VDC switch-over solenoid valve (cut valve) 
(On/Off) status is displayed.

CV2
(On/Off)

–

–

×

Rear side VDC switch-over solenoid valve (cut-valve) 
(On/Off) status is displayed.

SV1
(On/Off)

–

–

×

Front side VDC switch-over solenoid valve (suction 
valve) (On/Off) status is displayed.

SV2
(On/Off)

–

–

×

Rear side VDC switch-over solenoid valve (suction 
valve) (On/Off) status is displayed.

2WD/4WD
(2WD/4WD)

–

–

×

It recognizes on software whether it is 2WD and 
whether it is in 4WD state.

ACCEL POS SIG
(%)

×

–

×

Throttle valve open/close status judged by CAN com-
munication signal is displayed.

SIDE G-SENSOR
 (m/s

2

)

×

–

×

Transverse acceleration detected by side G-sensor is 
displayed. 

STR ANGLE SIG
(deg)

×

–

×

Steering angle detected by steering angle sensor is 
displayed.

PRESS SENSOR
(bar)

×

–

×

Brake pressure detected by pressure sensor is dis-
played.

EBD SIGNAL
(On/Off)

–

–

×

EBD operation (On/Off) status is displayed.

ABS SIGNAL
(On/Off)

–

–

×

ABS operation (On/Off) status is displayed.

TCS SIGNAL
(On/Off)

–

–

×

TCS operation (On/Off) status is displayed.

VDC SIGNAL
(On/Off)

–

–

×

VDC operation (On/Off) status is displayed.

EBD FAIL SIG
(On/Off)

–

–

×

EBD fail signal (On/Off) status is displayed.

ABS FAIL SIG
(On/Off)

–

–

×

ABS fail signal (On/Off) status is displayed.

TCS FAIL SIG
(On/Off)

–

–

×

TCS fail signal (On/Off) status is displayed.

VDC FAIL SIG
(On/Off)

–

–

×

VDC fail signal (On/Off) status is displayed.

CRANKING SIG
(On/Off)

–

–

×

The input state of the key SW START position signal 
is displayed.

FLUID LEV SW
(On/Off)

×

–

×

Brake fluid level switch (On/Off) status is displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

Conditions

Description

ST ANGLE SENSOR ADJUSTMENT

Steering angle sensor neutral position adjustment can be per-
formed. Refer to 

BRC-12, "ADJUSTMENT OF STEERING AN-

GLE SENSOR NEUTRAL POSITION : Description"

.

DECEL G SEN CALIBRATION

Decel G sensor calibration can be performed. Refer to 

BRC-13, 

"CALIBRATION OF DECEL G SENSOR : Description"

.

August 2012

2012 Pathfinder

BRC-32

< SYSTEM DESCRIPTION >

[TYPE 1]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

• Do not perform active test while driving vehicle.

• Make sure to completely bleed air from brake system.

• The active test cannot be performed with the ABS warning lamp, VDC OFF indicator lamp, SLIP indi-

cator lamp or brake warning lamp on.

• ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are on

during active test.

NOTE:

• When active test is performed while depressing the pedal, the pedal depression amount will change. This is

normal. (solenoid valve and ABS motor only)

Test Item

SOLENOID VALVE

• When performing an active test of the ABS function, select the menu item for each test item.

• For ABS solenoid valve, touch “Up”, “Keep”, and “Down” on the display screen. For ABS solenoid valve

(ACT), touch “Up”, “ACT UP”, “ACT KEEP” and confirm that solenoid valves operate as shown in the table

below.

• To perform test again, touch BACK.

*: On for 1 to 2 seconds after the touch, and then Off

ABS MOTOR

• Touch “On” and “Off” on screen. Make sure motor relay and actuator relay operates as shown in table below.

Operation

ABS solenoid valve

ABS solenoid valve (ACT)

Up

Keep

Down

Up

ACT UP

ACT KEEP

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*

—

—

—

REAR SOL

RR RH IN SOL

Off

On

On

Off

Off

Off

RR RH OUT SOL

Off

Off

On*

Off

Off

Off

RR LH IN SOL

Off

On

On

Off

Off

Off

RR LH OUT SOL

Off

Off

On*

Off

Off

Off

FR RH ABS SOLENOID (ACT)

FR RH IN SOL

—

—

—

Off

Off

Off

FR RH OUT SOL

—

—

—

Off

Off

Off

FR LH ABS SOLENOID (ACT)

FR LH IN SOL

—

—

—

Off

Off

Off

FR LH OUT SOL

—

—

—

Off

Off

Off

RR RH ABS SOLENOID (ACT)

RR RH IN SOL

—

—

—

Off

Off

Off

RR RH OUT SOL

—

—

—

Off

Off

Off

RR LH ABS SOLENOID (ACT)

RR LH IN SOL

—

—

—

Off

Off

Off

RR LH OUT SOL

—

—

—

Off

Off

Off

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

August 2012

2012 Pathfinder

APPLICATION NOTICE

BRC-33

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 1]

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DTC/CIRCUIT DIAGNOSIS

APPLICATION NOTICE

Application Notice

INFOID:0000000007818415

Service information

Remarks

TYPE 1

VDC/TCS/ABS (VQ40DE)

TYPE 2

VDC/TCS/ABS (VK56DE)

August 2012

2012 Pathfinder