Nissan Pathfinder (2009 year). Manual - part 100

EBD

BRC-25

< FUNCTION DIAGNOSIS >

[TYPE 1]

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EBD

System Diagram

INFOID:0000000003937727

System Description

INFOID:0000000003937728

• 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-III is available.

AWFIA0014GB

2009 Pathfinder

BRC-26

< FUNCTION DIAGNOSIS >

[TYPE 1]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

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

CONSULT-III Function (ABS)

INFOID:0000000003937729

FUNCTION

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

SELF-DIAG RESULTS MODE

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,

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 approxi-
mately 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-113, "DTC No. Index"

.

DATA MONITOR MODE

Display Item List

Diagnostic test mode

Function

Work support

Supports inspections and adjustments. Commands are transmitted to the ABS actuator and 
electric unit (control unit) for setting the status suitable for required operation, input/output sig-
nals are received from the ABS actuator and electric unit (control unit) and received data is dis-
played.

Data monitor

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

Active test

Operation of electrical loads can be checked by sending drive signals to them.

Self-diagnostic result

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

CAN diag support monitor

The result of transmit/receive diagnosis of CAN communication can be read.

ECU identification

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

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

GEAR
(1, 2, 3, 4, 5)

×

×

×

Gear position determined by TCM is 
displayed.

FR RH SENSOR 
 (km/h, MPH)

×

×

×

Wheel speed calculated by front RH 
wheel sensor signal is displayed.

FR LH SENSOR 
 (km/h, MPH)

×

×

×

Wheel speed calculated by front LH 
wheel sensor signal is displayed.

RR RH SENSOR
 (km/h, MPH)

×

×

×

Wheel speed calculated by rear RH 
wheel sensor signal is displayed.

2009 Pathfinder

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-27

< FUNCTION DIAGNOSIS >

[TYPE 1]

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RR LH SENSOR 
 (km/h, MPH)

×

×

×

Wheel speed calculated by rear LH 
wheel sensor signal is displayed.

BATTERY VOLT
(V)

×

×

×

Voltage supplied to ABS actuator 
and electric unit (control unit) is dis-
played.

N POSI SIG
(ON/OFF)

–

–

×

Shift position (ON/OFF) judged by 
PNP switch signal.

P POSI SIG
(ON/OFF)

–

–

×

Shift position (ON/OFF) judged by 
PNP switch signal.

ACCEL POS SIG
(%)

×

–

×

Throttle valve open/close status 
judged by CAN communication sig-
nal is displayed.

ENGINE SPEED
(rpm)

×

×

×

Engine speed judged by CAN com-
munication signal is displayed.

STR ANGLE SIG
(deg)

×

–

×

Steering angle detected by steering 
angle sensor is displayed.

YAW RATE SEN
(d/s)

×

×

×

Yaw rate detected by yaw rate sen-
sor is displayed.

SIDE G-SENSOR

 (m/s

2

)

×

–

×

Transverse acceleration detected 
by side G-sensor is displayed. 

STOP LAMP SW
(ON/OFF)

×

×

×

Stop lamp switch (ON/OFF) status 
is displayed.

OFF  SW
(ON/OFF)

×

×

×

VDC OFF switch (ON/OFF) status 
is displayed.

ABS WARN LAMP
(ON/OFF)

–

×

×

ABS warning lamp (ON/OFF) status 
is displayed.

SLIP LAMP
(ON/OFF)

–

×

×

SLIP indicator lamp (ON/OFF) sta-
tus is displayed.

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 displayed.

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 displayed.

FR RH IN SOL
(ON/OFF)

–

×

×

Front RH IN ABS solenoid (ON/
OFF) status is displayed.

FR RH OUT SOL
(ON/OFF)

–

×

×

Front RH OUT ABS solenoid (ON/
OFF) status is displayed.

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 displayed.

OFF LAMP
(ON/OFF)

–

×

×

OFF Lamp (ON/OFF) status is dis-
played.

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.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

2009 Pathfinder

BRC-28

< FUNCTION DIAGNOSIS >

[TYPE 1]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

CV1
(ON/OFF)

–

–

×

Front side switch-over solenoid 
valve (cut valve) (ON/OFF) status is 
displayed.

CV2
(ON/OFF)

–

–

×

Rear side switch-over solenoid 
valve (cut-valve) (ON/OFF) status is 
displayed.

SV1
(ON/OFF)

–

–

×

Front side switch-over solenoid 
valve (suction valve) (ON/OFF) sta-
tus is displayed.

SV2
(ON/OFF)

–

–

×

Rear side switch-over solenoid 
valve (suction valve) (ON/OFF) sta-
tus is displayed.

VDC FAIL SIG
(ON/OFF)

–

–

×

VDC fail signal (ON/OFF) status is 
displayed.

TCS FAIL SIG
(ON/OFF)

–

–

×

TCS fail signal (ON/OFF) status is 
displayed.

ABS FAIL SIG
(ON/OFF)

–

–

×

ABS fail signal (ON/OFF) status is 
displayed.

EBD FAIL SIG
(ON/OFF)

–

–

×

EBD fail signal (ON/OFF) status is 
displayed.

FLUID LEV SW
(ON/OFF)

×

–

×

Brake fluid level switch (ON/OFF) 
status is displayed.

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 WARN LAMP
(ON/OFF)

–

–

×

Brake warning lamp (ON/OFF) sta-
tus is displayed.

SLCT LVR POSI
(P, R, N, D)

×

×

×

Shift position judged by PNP switch 
signal.

R POSI SIG
(ON/OFF)

–

–

×

Shift position judged by PNP switch 
signal.

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

–

–

×

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

DECEL G-SEN*
 (G)

×

×

×

Longitudinal acceleration detected 
by decel G-sensor is displayed. 

PRESS SENSOR**
(bar)

×

–

×

Brake pressure detected by pres-
sure sensor is displayed.

CRANKING SIG
(ON/OFF)

–

–

×

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

PRESS SEN2**
(bar)

–

–

×

Brake pressure detected by pres-
sure sensor is displayed.

DELTA S SEN**
(in.)

–

–

×

The amount of stroke sensor move-
ments in the active booster detected 
by DELTA S SEN is displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

2009 Pathfinder

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

BRC-29

< FUNCTION DIAGNOSIS >

[TYPE 1]

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×

: Applicable

–: Not applicable

*: with VQ40DE

**: with VK56DE

ACTIVE TEST MODE

CAUTION:

• 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. (Only solenoid valve and ABS motor.)

• “TEST IS STOPPED” is displayed 10 seconds after operation start.
• After “TEST IS STOPPED” is displayed, to perform test again, touch BACK.

Test Item

SOLENOID VALVE

• When performing an active test of the ABS function, select the “MAIN SIGNALS” for each test item. In addi-

tion, when performing an active test of the VDC/TCS function, select the item menu 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.

RELEASE SW NO**
(ON/OFF)

–

–

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Release switch signal (ON/OFF) 
status is displayed. “ON” indicates 
that the brake pedal is depressed. 
“OFF”“ is that the brake pedal is re-
leased.

RELEASE SW NC**
(ON/OFF)

–

–

×

Release switch signal (ON/OFF) 
status is displayed. “OFF” indicates 
that the brake pedal is depressed 
on. “ON” is that the brake pedal is 
released.

OHB FAIL**
(ON/OFF)

–

–

×

OHB fail status is displayed.

OHB SIG**
(ON/OFF)

–

–

×

OHB operation (ON/OFF) status is 
displayed.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

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*

—

—

—

2009 Pathfinder

BRC-30

< FUNCTION DIAGNOSIS >

[TYPE 1]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL 

UNIT)]

*: 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.

FR RH ABS SOLENOID (ACT)

FR RH IN SOL

—

—

—

Off

Off

Off

FR RH OUT SOL

—

—

—

Off

Off

Off

CV1

—

—

—

Off

On

On

SV1

—

—

—

Off

On*

Off

FR LH ABS SOLENOID (ACT)

FR LH IN SOL

—

—

—

Off

Off

Off

FR LH OUT SOL

—

—

—

Off

Off

Off

CV1

—

—

—

Off

On

On

SV1

—

—

—

Off

On*

Off

RR RH ABS SOLENOID (ACT)

RR RH IN SOL

—

—

—

Off

Off

Off

RR RH OUT SOL

—

—

—

Off

Off

Off

CV2

—

—

—

Off

On

On

SV2

—

—

—

Off

On*

Off

RR LH ABS SOLENOID (ACT)

RR LH IN SOL

—

—

—

Off

Off

Off

RR LH OUT SOL

—

—

—

Off

Off

Off

CV2

—

—

—

Off

On

On

SV2

—

—

—

Off

On*

Off

REAR SOL

This item is not used for this model.

Operation

ABS solenoid valve

ABS solenoid valve (ACT)

Up

Keep

Down

Up

ACT UP

ACT KEEP

Operation

On

Off

MOTOR RELAY

On

Off

ACTUATOR RLY

On

On

2009 Pathfinder

APPLICATION NOTICE

BRC-31

< COMPONENT DIAGNOSIS >

[TYPE 1]

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COMPONENT DIAGNOSIS

APPLICATION NOTICE

Application Notice

INFOID:0000000003937730

Service information

Remarks

TYPE 1

VDC/TCS/ABS

TYPE 2

HILL DESCENT CONTROL/HILL START ASSIST/VDC/TCS/ABS

2009 Pathfinder

BRC-32

< COMPONENT DIAGNOSIS >

[TYPE 1]

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

Description

INFOID:0000000003937731

When the sensor rotor rotates, the magnetic field changes. It converts the magnetic field changes to current
signals (rectangular wave) and transmits them to the ABS actuator and electric unit (control unit). 

DTC Logic

INFOID:0000000003937732

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

CHECK SELF-DIAGNOSIS RESULTS

Check the self-diagnosis results.

Is above displayed on the self-diagnosis display?

YES

>> Proceed to diagnosis procedure. Refer to 

BRC-32, "Diagnosis Procedure"

.

NO

>> Inspection End

Diagnosis Procedure

INFOID:0000000003937733

CAUTION:

Do not check between wheel sensor terminals.

INSPECTION PROCEDURE

1.

CONNECTOR INSPECTION

Disconnect the ABS actuator and electric unit (control unit) connector and wheel sensor connector of malfunc-
tioning code. 
Check the terminals for deformation, disconnection, looseness or damage.

Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace as necessary.

2.

CHECK WHEEL SENSOR OUTPUT SIGNAL

1.

Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.

2.

Turn on the ABS active wheel sensor tester power switch.
NOTE:
The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the
battery in the ABS active wheel sensor tester before proceeding.

3.

Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel
sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.

DTC

Display item

Malfunction detected condition

Possible cause

C1101

RR RH SENSOR-1

Circuit of rear RH wheel sensor is open. Or when the sen-
sor power voltage is outside the standard.

• Harness or connector
• Wheel sensor
• ABS actuator and electric unit 

(control unit)

C1102

RR LH SENSOR-1

Circuit of rear LH wheel sensor is open. Or when the sen-
sor power voltage is outside the standard.

C1103

FR RH SENSOR-1

Circuit of front RH wheel sensor is open. Or when the 
sensor power voltage is outside the standard.

C1104

FR LH SENSOR-1

Circuit of front LH wheel sensor is open. Or when the 
sensor power voltage is outside the standard.

Self-diagnosis results

RR RH SENSOR-1

RR LH SENSOR-1

FR RH SENSOR-1

FR LH SENSOR-1

2009 Pathfinder