Nissan Pathfinder (2006 year). Instruction - part 127

TROUBLE DIAGNOSIS

BRC-101

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

Solenoid Valve Operation Chart

*: ON for 1 to 2 seconds after the touch, and then OFF

NOTE:

●

If active test is performed with brake pedal depressed, pedal stroke may change. This is normal.

●

“TEST IS STOPPED” is displayed approximately 10 seconds after operation starts.

●

After “TEST IS STOPPED” is displayed, to perform test again, repeat Step 6.

ABS MOTOR

Touch “ON” and “OFF” on the screen. Check that ABS motor relay
operates as shown in table below. 

NOTE:

●

If active test is performed with brake pedal depressed, pedal
stroke may change. This is normal.

●

“TEST IS STOPPED” is displayed approximately 10 seconds
after operation starts.

BOOSTER DRIVE

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.

Operation

ABS solenoid valve

ABS solenoid valve (ACT)

UP

KEEP

DOWN

UP

ACTUATOR 

UP

ACTUATOR 

KEEP

FR RH IN SOL

OFF

ON

ON

OFF

OFF

OFF

FR RH OUT SOL

OFF

OFF

ON*

OFF

OFF

OFF

FR LH IN SOL

OFF

ON

ON

OFF

OFF

OFF

FR LH OUT SOL

OFF

OFF

ON*

OFF

OFF

OFF

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

Primary side VDC switch over 
valve 1 (SV 1)

OFF

OFF

OFF

OFF

ON*

OFF

Primary side VDC switch over 
valve 1 (CV 1)

OFF

OFF

OFF

OFF

ON

ON

Primary side VDC switch over 
valve 2 (SV 1)

OFF

OFF

OFF

OFF

ON*

OFF

Primary side VDC switch over 
valve 2 (CV 1)

OFF

OFF

OFF

OFF

ON

ON

Operation

ON

OFF

MOTOR RELAY

ON

OFF

ACTUATOR RELAY

ON

ON

SFIA0593E

BRC-102

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS

2006 Pathfinder

Touch "UP" and "DOWN" on the screen. Check that booster drive
operates as shown in table below.

NOTE:
"TEST IS STOPPED" is displayed approximately 10 seconds after operation starts.

Operation

UP

DOWN

STOP LAMP SW

ON

OFF

BST OPER SIG

ON

OFF

PRESS SENSOR

50 

±

 5 bar

0 bar

PRESS SEN 2

50 

±

 5 bar

0 bar

STP OFF RLY

OFF

OFF

WFIA0350E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-103

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

PFP:00000

Wheel Sensor System Inspection

EFS0066T

INSPECTION PROCEDURE

1. 

CHECK TIRES

Check for inflation pressure, wear and size of each tire.

Are tire pressure and size correct and is tire wear within specifications?

YES

>> GO TO 2.

NO

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

2. 

CONNECTOR INSPECTION

Disconnect the ABS actuator and electric unit (control unit) connector E125 and wheel sensor of malfunction-
ing code. 
Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

3. 

CHECK SENSOR AND SENSOR ROTOR

●

Check the cord of the sensor mount (for looseness, etc.)

●

Check sensor rotors for damage (rear only)

●

Check wheel bearing axial end play

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace as necessary.

4. 

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.

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 5.

NO

>> Replace the wheel sensor. Refer to 

BRC-130, "Removal and Installation"

 .

BRC-104

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

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 resistance between wheel sensor harness connector ter-
minals and ground.

OK or NG

OK

>> GO TO 6.

NG

>> Repair the circuit.

6. 

CHECK WIRING HARNESS FOR OPEN CIRCUIT

Check continuity between ABS actuator and electric unit (control unit) harness connector E125 and the mal-
functioning wheel sensor harness connector E18, E117 or C13.

OK or NG

OK

>> Replace the ABS actuator and electric unit (control unit). Refer to 

BRC-132, "Removal and Instal-

lation"

 .

NG

>> Repair the circuit.

Engine System Inspection

EFS0066U

INSPECTION PROCEDURE

1. 

SELF-DIAGNOSIS RESULT CHECK

Check self-diagnosis results.

Is the above displayed in the self-diagnosis display items?

YES

>> GO TO 2.

NO

>> Inspection End.

Continuity should not exist.

WFIA0326E

Wheel sensor

ABS actuator and 

electric unit (control unit)

Wheel sensor

Continuity

Connector

Terminal

Connector

Terminal

Front LH

E125

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

Self-diagnosis results

ENGINE SIGNAL 1

ENGINE SIGNAL 2

ENGINE SIGNAL 3

ENGINE SIGNAL 4

ENGINE SIGNAL 6

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-105

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

2. 

ENGINE SYSTEM INSPECTION

1.

Perform ECM self-diagnosis and repair as necessary.

2.

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

OK or NG

OK

>> Inspection End.

NG

>> Repair or replace as necessary.

ABS/TCS/VDC Control Unit Inspection

EFS0066V

INSPECTION PROCEDURE

1. 

SELF-DIAGNOSIS RESULT CHECK

Check self-diagnosis results.

Is the above displayed in the self-diagnosis display items?

YES

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

BRC-132, "Removal and Installa-

tion"

 .

NO

>> Inspection End.

Steering Angle Sensor System

EFS0066W

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSIS RESULT

Check self-diagnosis results.

Is above displayed in self-diagnosis item?

YES

>> GO TO 2.

NO

>> Inspection End.

2. 

CHECK CONNECTOR

1.

Disconnect steering angle sensor connector M47 and ABS actuator and electric unit (control unit) connec-
tor E125 and check terminals for deformation, disconnection, looseness, or damage. Repair or replace as
necessary.

2.

Reconnect connectors and repeat ABS actuator and electric unit (control unit) self-diagnosis.

Is "ST ANGLE SEN CIRCUIT" or "ST ANG SEN COM CIR" displayed?

YES

>> GO TO 3.

NO

>> Inspection End.

Self-diagnosis results

 CONTROLLER FAILURE

VARIANT CODING

Self-diagnosis results

ST ANGLE SEN CIRCUIT

ST ANG SEN COM CIR

BRC-106

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

3. 

CHECKING STEERING ANGLE SENSOR POWER AND GROUND

1.

Check voltage between steering angle sensor harness connec-
tor M47 and body ground.

2.

Turn ignition switch OFF.

3.

Check resistance between steering angle sensor harness con-
nector M47 and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair the circuit.

4. 

CHECK STEERING ANGLE SENSOR HARNESS

1.

Check CAN communication system. Refer to 

LAN-25, "CAN COMMUNICATION"

 .

2.

Disconnect steering angle sensor connector M47 and ABS actu-
ator and electric unit (control unit) connector E125.

3.

Check continuity between ABS actuator and electric unit (control
unit) connector E125 and steering angle sensor connector M47.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness.

5. 

CHECK STEERING WHEEL PLAY

Check steering wheel play. Refer to 

PS-8, "CHECKING STEERING WHEEL PLAY"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Adjust steering wheel play.

Terminals

Measured 

value

(Approx.)

(+)

(-)

Steering angle sensor 

connector

Terminal

M47

1

Ground

12V

3

12V

WFIA0398E

Terminals

Measured 

value 

Ω

(Approx.)

(+)

(-)

Steering angle sensor 

connector

Terminal

M47

2

Ground

0

Ω

WFIA0399E

A

B

Continuity

Connector

Ter-

minal

Connector

Ter-

minal

ABS actuator and 
electric unit (con-
trol unit): E125

11

Steering angle 
sensor: M47

4

Yes

ABS actuator and 
electric unit (con-
trol unit): E125

15

Steering angle 
sensor: M47

5

Yes

WFIA0400E

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-107

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

6. 

CHECK DATA MONITOR

1.

Connect steering angle sensor and ABS actuator and electric unit (control unit) connectors.

2.

Use “DATA MONITOR” to check if the status of "STR ANGLE SIG" is normal.

OK or NG

OK

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

NG

>> Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sensor.

Refer to 

BRC-128, "Adjustment of Steering Angle Sensor Neutral Position"

 .

Yaw Rate/Side/Decel G Sensor System Inspection

EFS0066X

CAUTION:

Sudden turns (such as spin turns, acceleration turns), drifting, etc. when VDC function is OFF may
cause the yaw rate/side/decel G sensor system to indicate a problem. This is not a problem if normal
operation can be resumed after restarting the engine.

INSPECTION PROCEDURE

1. 

SELF-DIAGNOSIS RESULT CHECK

Check self-diagnosis results.

CAUTION:

If vehicle is on turntable at entrance to parking garage, or on other moving surface, VDC OFF indicator
lamp may illuminate and CONSULT-II self-diagnosis may indicate yaw rate sensor system malfunction.
However, in this case there is no malfunction in yaw rate sensor system. Take vehicle off of turntable
or other moving surface, and start engine. Results will return to normal.

Is the above displayed in the self-diagnosis display items?

YES

>> GO TO 2.

NO

>> Inspection End.

2. 

CONNECTOR INSPECTION

Disconnect the ABS actuator and electric unit (control unit) connector E125 and yaw rate/side/decel G sensor
connector B73. 
Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

Steering condition

Data monitor

Straight-ahead

–3.5 deg to +3.5 deg

Turn wheel to the right by 90

°

Approx. - 90deg

Turn wheel to the left by 90

°

Approx. + 90deg

Self-diagnosis results

YAW RATE SENSOR

SIDE G-SEN CIRCUIT

G-SENSOR

BRC-108

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

3. 

YAW RATE/SIDE/DECEL G SENSOR HARNESS INSPECTION

1.

Turn off the ignition switch and disconnect yaw rate/side/decel G sensor connector B73 and ABS actuator
and electric unit (control unit) connector E125.

2.

Check continuity between the ABS actuator and electric unit (control unit) connector E125 and the yaw
rate/side/decel G sensor connector B73.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace as necessary.

4. 

YAW RATE/SIDE/DECEL G SENSOR INSPECTION

1.

Connect the yaw rate/side/decel G sensor connector B73 and ABS actuator and electric unit (control unit)
connector E125.

2.

Use “DATA MONITOR” to check if the yaw rate/side/decel G sensor signals are normal. 

OK or NG

OK

>> Inspection End.

NG

>> Replace the yaw rate/side/decel G sensor. Refer to 

BRC-135, "Removal and Installation"

 .

ABS actuator and electric unit 

(control unit) harness connector 

E125

Yaw rate/side/decel G sensor

harness connector B73

Continuity

6

3

Yes

24

5

Yes

25

1

Yes

29

2

Yes

Vehicle status

Yaw rate sensor

(Data monitor standard)

Side G sensor

(Data monitor standard)

Decel G Sensor

(Data monitor standard)

When stopped

-4 to +4 deg/s

-1.1 to +1.1 m/s

-0.11 G to +0.11 G

Right turn

Negative value

Negative value

-

Left turn

Positive value

Positive value

-

Speed up

-

-

Negative value

Speed down

-

-

Positive value