Nissan Pathfinder (2012 year). Manual — part 109

BRC-138

< SYSTEM DESCRIPTION >

[TYPE 2]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL

UNIT)]

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

CONSULT Function (ABS)

INFOID:0000000007356842

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-205, "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.

FR RH IN SOL
(On/Off)

–

×

×

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

August 2012

2012 Pathfinder

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL

UNIT)]

BRC-139

< SYSTEM DESCRIPTION >

[TYPE 2]

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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.

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.

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.

Item

(Unit)

Data monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELECTION

FROM MENU

August 2012

2012 Pathfinder

BRC-140

< SYSTEM DESCRIPTION >

[TYPE 2]

DIAGNOSIS SYSTEM [ABS ACTUATOR AND ELECTRIC UNIT (CONTROL

UNIT)]

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.

BST OPER SIG
(On/Off)

–

–

×

Active booster operation (On/Off) status is displayed.

PRESS SENSOR
(bar)

×

–

×

Brake pressure detected by front pressure sensor 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 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.

PRESS SEN2
(bar)

–

–

×

Brake pressure detected by pressure sensor is dis-
played.

DELTA S SEN
(mm)

–

–

×

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

RELEASE SW NO
(On/Off)

–

–

×

Release switch signal (On/Off) status is displayed.
“On” indicates that the brake pedal is depressed. “Off”
indicates that the brake pedal is released.

RELEASE SW NC
(On/Off)

–

–

×

Release switch signal (On/Off) status is displayed.
“Off” indicates that the brake pedal is depressed. “On”
indicates that the brake pedal is released.

HBA FAIL
(On/Off)

–

–

×

HBA fail status is displayed.

OHB FAIL
(On/Off)

–

–

×

OHB fail status is displayed.

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-141

< SYSTEM DESCRIPTION >

[TYPE 2]

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×

: Applicable

–: Not applicable

WORK SUPPORT

ACTIVE TEST

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. (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.

HBA SIG
(On/Off)

–

–

×

HBA operation (On/Off) status is displayed.

OHB SIG
(On/Off)

–

–

×

OHB operation (On/Off) status is displayed.

STP OFF RLY
(On/Off)

–

–

×

Stop lamp relay signal (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-121, "ADJUSTMENT OF STEERING AN-

GLE SENSOR NEUTRAL POSITION : Description"

.

DECEL G SEN CALIBRATION

Decel G sensor calibration can be performed. Refer to

BRC-122,

"CALIBRATION OF DECEL G SENSOR : Description"

.

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*

—

—

—

August 2012

2012 Pathfinder

BRC-142

< SYSTEM DESCRIPTION >

[TYPE 2]

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.

BOOSTER DRIVE

• Touch “Up” and “Down” on the screen. Check that booster drive operates as shown in table below.

CAUTION:

Perform active test subject to the conditions below.

• Do not operate brake pedal during active test.

• Make sure the engine revolution is over 500 rpm.

• Make sure the vehicle is not moving.

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

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

Operation

Up

Down

BST OPER SIG

On

Off

PRESS SENSOR

50

±

5 bar

0 bar

PRESS SEN2

50

±

5 bar

0 bar

STOP LAMP SW

On

Off

STP OFF RLY

Off

Off

August 2012

2012 Pathfinder

APPLICATION NOTICE

BRC-143

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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DTC/CIRCUIT DIAGNOSIS

APPLICATION NOTICE

Application Notice

INFOID:0000000007818420

Service information

Remarks

TYPE 1

VDC/TCS/ABS (VQ40DE)

TYPE 2

VDC/TCS/ABS (VK56DE)

August 2012

2012 Pathfinder

BRC-144

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

Description

INFOID:0000000007356844

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:0000000007356845

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-144, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000007356846

Regarding Wiring Diagram information, refer to

BRC-207, "Wiring Diagram - With VK56DE"

.

CAUTION:

Do not check between wheel sensor terminals.

1.

CONNECTOR INSPECTION

1. Disconnect the ABS actuator and electric unit (control unit) connector and wheel sensor connector of mal-

functioning code.

2. 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:

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

August 2012

2012 Pathfinder

C1101, C1102, C1103, C1104 WHEEL SENSOR-1

BRC-145

< DTC/CIRCUIT DIAGNOSIS >

[TYPE 2]

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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.

NOTE:

If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and

retest.

Does the ABS active wheel sensor tester detect a signal?

YES

>> GO TO 3

NO

>> Replace the wheel sensor. Refer to

BRC-229, "Removal and Installation"

.

3.

CHECK TIRES

Check the inflation pressure, wear and size of each tire.
Is the inspection result normal?

YES

>> GO TO 4

NO

>> Adjust tire pressure or replace tire(s).

4.

CHECK WHEEL BEARINGS

Check wheel bearing axial end play. Refer to

FAX-6, "On-Vehicle Inspection and Service"

(front) or

RAX-6,

"On-Vehicle Inspection and Service"

(rear).

Is the inspection result normal?

YES

>> GO TO 5

NO

>> Repair or replace as necessary. Refer to

FAX-10, "Removal and Installation"

(front) or

RAX-7,

"Removal and Installation"

(rear).

5.

CHECK WIRING HARNESS FOR SHORT CIRCUIT

1. Disconnect ABS actuator and electric unit (control unit) connec-

tor and wheel sensor connector of malfunction code No.

2. Check continuity between front wheel sensor connector termi-

nals (A) or rear wheel sensor connector terminals (B) and

ground.

Is the inspection result normal?

YES

>> GO TO 6

NO

>> Repair the circuit.

6.

CHECK WIRING HARNESS FOR OPEN CIRCUIT

1. Check continuity between ABS actuator and electric unit (control unit) connector and the malfunctioning

wheel sensor connector.

Is the inspection result normal?

Continuity should not exist.

AWFIA0464ZZ

Wheel sensor

ABS actuator and

electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

Front LH

E127

45

E18

1

Yes

46

2

Front RH

34

E117

1

33

2

Rear LH

37

C13

3

36

4

Rear RH

42

1

43

2

August 2012

2012 Pathfinder