Nissan Pathfinder (2006 year). Manual - part 128

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-109

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

Solenoid and VDC Change-Over Valve System Inspection

EFS0066Y

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.

2. 

CONNECTOR INSPECTION

1.

Disconnect ABS actuator and electric unit (control unit) connector E125.

2.

Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

Self-diagnosis results

FR LH IN ABS SOL

FR LH OUT ABS SOL

RR RH IN ABS SOL 

RR RH OUT ABS SOL 

FR RH IN ABS SOL

FR RH OUT ABS SOL

RR LH IN ABS SOL

RR LH OUT ABS SOL

CV 1

CV 2

SV 1

SV 2

BRC-110

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

3. 

CHECKING SOLENOID POWER AND GROUND

1.

Check voltage between ABS actuator and electric unit (control
unit) harness connector E125 and body ground.

2.

Check resistance between ABS actuator and electric unit (con-
trol unit) harness connector E125 and body ground.

OK or NG

OK

>> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (control
unit). Refer to 

BRC-132, "Removal and Installation"

 .

NG

>> Repair the circuit.

Actuator Motor, Motor Relay, and Circuit Inspection

EFS0066Z

INSPECTION PROCEDURE 

1. 

CHECKING SELF-DIAGNOSIS RESULTS

Check self-diagnosis results.

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

YES

>> GO TO 2.

NO

>> Inspection End.

2. 

CONNECTOR INSPECTION

1.

Disconnect ABS actuator and electric unit (control unit) connector E125.

2.

Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

ABS actuator and electric 

unit (control unit)

harness connector E125

Body 

ground

Measured 

value

(Approx.)

32

—

12V

WFIA0195E

ABS actuator and electric 

unit (control unit)

harness connector E125

Body 

ground

Measured 

value 

Ω

(Approx.)

16

—

0

Ω

47

—

0

Ω

WFIA0196E

Self-diagnosis results

PUMP MOTOR

ACTUATOR RLY

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-111

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

3. 

CHECKING ABS MOTOR AND MOTOR RELAY POWER SYSTEM

1.

Check voltage between ABS actuator and electric unit (control
unit) harness connector E125 and body ground.

2.

Check resistance between ABS actuator and electric unit (con-
trol unit) connector E125 and body ground.

OK or NG

OK

>> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (control
unit). Refer to 

BRC-132, "Removal and Installation"

 .

NG

>> Repair the circuit.

Stop Lamp Switch System Inspection

EFS00670

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.

2. 

CONNECTOR INSPECTION

1.

Disconnect the ABS actuator and electric unit (control unit) connector E125 and stop lamp switch connec-
tor E38. 

2.

Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

ABS actuator and electric 

unit (control unit)

harness connector E125

Body 

ground

Measured 

value

(Approx.)

1

—

12V

WFIA0209E

ABS actuator and electric 

unit (control unit)

harness connector E125

Body 

ground

Measured 

value 

Ω

(Approx.)

16

—

0

Ω

47

—

0

Ω

WFIA0196E

Self-diagnosis results

STOP LAMP SW

BRC-112

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

3. 

STOP LAMP SWITCH INSPECTION

Check the voltage between the ABS actuator and electric unit (con-
trol unit) harness connector E125 terminal 41 and body ground.

OK or NG

OK

>> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (control
unit). Refer to 

BRC-132, "Removal and Installation"

 .

NG

>> GO TO 4.

4. 

STOP LAMP RELAY CIRCUIT INSPECTION

1.

Disconnect the stop lamp relay harness connector E12.

2.

Check the continuity between the ABS actuator and electric unit
(control unit) harness connector E125 terminal 41 and stop lamp
relay harness connector E12 terminal 5.

OK or NG

OK

>> Perform self-diagnosis again. If the same results

appear, replace ABS actuator and electric unit (control
unit). Refer to 

BRC-132, "Removal and Installation"

 .

NG

>> Refer to 

LT-85, "STOP LAMP"

 .

ABS/TCS/VDC Control Unit Power and Ground Systems Inspection

EFS00671

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.

2. 

CONNECTOR INSPECTION

1.

Disconnect the ABS actuator and electric unit (control unit) connector E125. 

2.

Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

Brake pedal depressed

: Battery voltage 
(approx. 12V)

Brake pedal not depressed

: Approx. 0V

WFIA0198E

Continuity should exist.

WFIA0325E

Self-diagnosis results

BATTERY VOLTAGE

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-113

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

3. 

ABS/TCS/VDC CONTROL UNIT POWER AND GROUND CIRCUIT INSPECTION

Measure the voltage and continuity between the ABS actuator and electric unit (control unit) harness connec-
tor E125 and body ground.

OK or NG

OK

>> Check the battery for loose terminals, low voltage, etc. Repair as necessary.

NG

>> Repair the circuit.

Brake Fluid Level Switch System Inspection

EFS00672

INSPECTION PROCEDURE

1. 

SELF-DIAGNOSIS RESULT CHECK

1.

Check the brake reservoir tank fluid level. If the level is low, add brake fluid.

2.

Erase the self-diagnosis results and check the self-diagnosis results.

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

YES

>> GO TO 2.

NO

>> Inspection End.

2. 

CONNECTOR INSPECTION

1.

Disconnect the ABS actuator and electric unit (control unit) connector E125 and brake fluid level switch
connector E21. 

2.

Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace as necessary.

3. 

CHECK THE HARNESS BETWEEN THE BRAKE FLUID LEVEL SWITCH AND THE ABS ACTUATOR 

AND ELECTRIC UNIT (CONTROL UNIT)

Check the continuity between the brake fluid level switch harness connector E21 and the ABS actuator and
electric unit (control unit) harness connector E125.

OK or NG

OK

>> GO TO 4.

NG

>> Repair the circuit.

Signal name

ABS actuator and electric unit 

(control unit)

harness connector E125

Body 

ground

Measured value

Power supply

1

—

Battery voltage (Approx. 12V)

32

Ground

16

—

Continuity should exist.

47

Self-diagnosis results

BR FLUID LEVEL LOW

ABS actuator and electric unit 

(control unit) harness connector 

E125

Brake fluid level switch harness 

connector E21

Continuity

8

1

Yes

8

Ground

No

Ground

2

Yes

BRC-114

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

4. 

CHECK BRAKE FLUID LEVEL SWITCH

Check continuity between brake fluid level switch terminals 1 and 2.

OK or NG

OK

>> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit

(control unit). Refer to 

BRC-132, "Removal and Installation"

 .

NG

>> Replace brake fluid level switch.

Active Booster System Inspection

EFS00673

INSPECTION PROCEDURE

1. 

DISPLAY SELF DIAGNOSIS RESULTS

Check self-diagnosis result display item.

Is the self-diagnosis result display item shown above displayed?

YES

>> GO TO 2.

NO

>> Inspection End.

2. 

CONNECTOR INSPECTION

1.

Turn the ignition switch OFF.

2.

Disconnect the active booster connector E49 and ABS actuator and electric unit (control unit) connector
E125 and inspect the terminals for deformation, disconnection, looseness, or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair connector.

Continuity should not exist.

Self-diagnosis results

ABS ACTIVE BOOSTER SV NG

ABS ACTIVE BOOSTER RESPONSE NG

ABS BRAKE RELEASE SW NG

ABS BRAKE BOOSTER DEFECT

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

BRC-115

[HDC/HSA/VDC/TCS/ABS]

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BRC

2006 Pathfinder

3. 

ACTIVE BOOSTER CIRCUIT INSPECTION

1.

Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125
and active booster harness connector E49.

2.

Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125
and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness or connector.

4. 

ACTIVE BOOSTER SENSOR INSPECTION

1.

Reconnect the active booster and ABS actuator and electric unit (control unit) connectors.

2.

Use "DATA MONITOR" to check if the status of "RELEASE SW NO" and "RELEASE SW NC" is normal.

OK or NG

OK

>> Inspection End.

NG

>> Replace active booster. Refer to 

BR-19, "Removal and Installation"

 .

Pressure Sensor System Inspection

EFS00674

FRONT PRESSURE INSPECTION PROCEDURE

1. 

DISPLAY SELF DIAGNOSIS RESULTS

Check self-diagnosis result display item.

Is the self-diagnosis result display item shown above displayed?

YES

>> GO TO 2.

NO

>> Inspection End.

ABS actuator and electric unit (con-

trol unit) harness connector E125

Active booster harness con-

nector E49

Continuity

17

3

Yes

27

1

28

5

30

2

31

4

ABS actuator and electric unit (con-

trol unit) harness connector E125

Body ground

Continuity

17

—

No

27

28

30

31

Condition

Data monitor display

RELEASE SW NO

RELEASE SW NC

When brake pedal is depressed

ON

OFF

When brake pedal is released

OFF

ON

Self-diagnosis results

PRESS SEN CIRCUIT

BRC-116

[HDC/HSA/VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

2006 Pathfinder

2. 

CONNECTOR INSPECTION

1.

Turn the ignition switch OFF.

2.

Disconnect the front pressure sensor connector E31 and ABS actuator and electric unit (control unit) con-
nector E125 and inspect the terminals for deformation, disconnection, looseness, or damage.

OK or NG

OK

>> GO TO 3.

NG

>> Repair connector.

3. 

FRONT PRESSURE SENSOR CIRCUIT INSPECTION

1.

Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125
and front pressure sensor harness connector E31.

2.

Measure the continuity between the ABS actuator and electric unit (control unit) harness connector E125
and body ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness or connector.

4. 

FRONT PRESSURE SENSOR INSPECTION

1.

Reconnect the front pressure sensor and ABS actuator and electric unit (control unit) connectors.

2.

Use "DATA MONITOR" to check if the status of "PRESS SENSOR" is normal.

OK or NG

OK

>> Inspection End.

NG

>> Replace front pressure sensor.

REAR PRESSURE INSPECTION PROCEDURE

1. 

DISPLAY SELF DIAGNOSIS RESULTS

Check self-diagnosis result display item.

Is the self-diagnosis result display item shown above displayed?

YES

>> GO TO 2.

NO

>> Inspection End.

ABS actuator and electric unit (control 

unit) harness connector E125

Front pressure sensor harness 

connector E31

Continuity

18

3

Yes

19

1

20

2

ABS actuator and electric unit (control 

unit) harness connector E125

Body ground

Continuity

18

—

No

19

20

Condition

Data monitor display (Approx.)

PRESS SENSOR

When brake pedal is depressed

Positive value

When brake pedal is released

0 bar

Self-diagnosis results

PRESS SEN CIRCUIT