Nissan Pathfinder (2007 year). Manual - part 418

TROUBLE DIAGNOSIS FOR SYSTEM

TF-225

[TX15B]

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2007 Pathfinder

COMPONENT INSPECTION

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Remove transfer shut off relay 1 and transfer shut off relay 2. Refer to 

TF-202, "Location of Electrical

Parts"

 .

3.

Apply 12V direct current between transfer shut off relay termi-
nals 1 and 2.

4.

Check continuity between relay terminals 3 and 5.

5.

If NG, replace the transfer shut off relay 1 or 2.  Refer to 

TF-202,

"Location of Electrical Parts"

 .

Transfer Control Unit

EDS0038B

DIAGNOSTIC PROCEDURE

1. 

INSPECTION START

Do you have CONSULT-II?

YES or NO

YES

>> GO TO 2.

NO

>> GO TO 3.

2. 

PERFORM SELF-DIAGNOSIS (WITH CONSULT-II)

 With CONSULT-II

1.

Turn ignition switch “ON”. (Do not start engine.)

2.

Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.

3.

Touch “ERASE”.

4.

Turn ignition switch “OFF” and wait at least 10 seconds.

5.

Perform the self-diagnosis again.

Is the “CONTROL UNIT 1 [P1802]”, “CONTROL UNIT 2 [P1803]”, “CONTROL UNIT 3 [P1804]” or “CONTROL
UNIT 4 [P1809]” displayed?

YES

>> Replace transfer control unit. Refer to 

TF-268, "TRANSFER CONTROL UNIT"

 .

NO

>> Inspection End.

3. 

PERFORM SELF-DIAGNOSIS (WITHOUT CONSULT-II)

 Without CONSULT-II

1.

Perform the self-diagnosis and then erase self-diagnostic results. Refer to 

TF-219, "SELF-DIAGNOSTIC

PROCEDURE (WITHOUT CONSULT-II)"

  and 

TF-221, "ERASE SELF-DIAGNOSIS"

 .

2.

Perform the self-diagnosis again.

Do the self-diagnostic results indicate AD converter?

YES

>> Replace transfer control unit. Refer to 

TF-268, "TRANSFER CONTROL UNIT"

 .

NO

>> Inspection End.

Output Shaft Revolution Signal (TCM)

EDS0038C

DIAGNOSTIC PROCEDURE

1. 

CHECK DTC WITH TCM

Perform self-diagnosis with TCM. Refer to 

AT-88, "CONSULT-II START PROCEDURE"

 .

Is any malfunction detected by self-diagnosis?

YES

>> Check the malfunctioning system.

NO

>> GO TO 2.

Condition

Continuity

12V direct current supply between terminals 1 and 2

Yes

OFF

No

SCIA1245E

TF-226

[TX15B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

2. 

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

TF-211, "Transfer Control Unit Input/Output Signal Ref-

erence Values"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Check transfer control unit pin terminals for damage or loose connection with harness connector.

If any items are damaged, repair or replace damaged parts.

3. 

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG

OK

>> Inspection End.

NG

>> Perform self-diagnosis with TCM again. Refer to 

AT-88, "SELF-DIAGNOSTIC RESULT MODE"

 .

Vehicle Speed Sensor (ABS)

EDS0038D

DIAGNOSTIC PROCEDURE

1. 

CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to 

BRC-29, "SELF-DIAGNO-

SIS"

  (without HDC/HSA) or 

BRC-92, "SELF-DIAGNOSIS"

  (with HDC/HSA).

Is any malfunction detected by self-diagnosis?

YES

>> Check the malfunctioning system.

NO

>> GO TO 2.

2. 

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

TF-211, "Transfer Control Unit Input/Output Signal Ref-

erence Values"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Check transfer control unit pin terminals for damage or loose connection with harness connector.

If any items are damaged, repair or replace damaged parts.

3. 

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG

OK

>> Inspection End.

NG

>> Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to 

BRC-29, "SELF-

DIAGNOSIS"

  (without HDC/HSA) or 

BRC-92, "SELF-DIAGNOSIS"

  (with HDC/HSA).

TROUBLE DIAGNOSIS FOR SYSTEM

TF-227

[TX15B]

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TF

2007 Pathfinder

4LO Switch

EDS0038E

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

Monitored item

Content

Condition

Display value

4L POSI SW [ON/OFF]

Condition of 4LO switch

●

Vehicle stopped

●

Engine running

●

A/T selector lever “N” 
position

●

Brake pedal depressed

4WD shift switch: 4LO

ON

Except the above

OFF

Terminal

Wire 

color

Item

Condition

Data (Approx.)

24

Y

4LO switch

●

Vehicle stopped

●

Engine running

●

A/T selector 
lever “N” position

●

Brake pedal 
depressed

4WD shift switch: 4LO

0V

Except the above

Battery voltage

TF-228

[TX15B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

DIAGNOSTIC PROCEDURE

1. 

CHECK 4LO POSITION SWITCH SIGNAL

 With CONSULT-II

1.

Start engine.

2.

Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.

3.

Read out the value of “4L POSI SW”.

 Without CONSULT-II

1.

Start engine.

2.

Check voltage between transfer control unit harness connector
terminal and ground.

OK or NG

OK 

>> GO TO 5.

NG

>> GO TO 2.

2. 

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND 4LO SWITCH

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Disconnect transfer control unit harness connector and the 4LO switch harness connector.

3.

Check continuity between transfer control unit harness connec-
tor M152 terminal 24 and 4LO switch harness connector F60
terminal 13.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace damaged parts.

Condition

Display value

●

Vehicle stopped

●

Engine running

●

A/T selector lever “N” position

●

Brake pedal depressed

4WD shift switch: 4LO

ON

Except the above

OFF

PDIA0220E

Connector

Terminal

Condition

Voltage 

(Approx.)

E142

 24 - 

Ground

●

Vehicle stopped

●

Engine running

●

A/T selector lever 
“N” position

●

Brake pedal 
depressed

4WD shift switch: 4LO

0V

Except the above

Battery 
voltage

SDIA3363E

Continuity should exist.

SDIA3364E

TROUBLE DIAGNOSIS FOR SYSTEM

TF-229

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2007 Pathfinder

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Disconnect 4LO switch harness connector.

3.

Check continuity between 4LO switch harness connector F60
terminal 12 and ground.

Also check harness for short to power.

 OK or NG

 OK 

>> GO TO 4.

 NG

>> Repair open circuit or short to power in harness or con-

nectors.

4. 

CHECK 4LO SWITCH 

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Disconnect 4LO switch harness connector.

3.

Remove 4LO switch. Refer to 

TF-202, "Location of Electrical Parts"

 .

4.

Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.

OK or NG

OK

>> GO TO 5.

NG

>> Replace 4LO switch.  Refer to 

TF-202, "Location of

Electrical Parts"

 .

5. 

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

TF-211, "Transfer Control Unit Input/Output Signal Ref-

erence Values"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Check transfer control unit pin terminals for damage or loose connection with harness connector.

If any items are damaged, repair or replace damaged parts.

6. 

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

OK or NG

OK

>> Inspection End.

NG

>> Replace transfer control unit. Refer to 

TF-268, "Removal and Installation"

 .

Continuity should exist.

PDIA0203E

Terminal

Condition

Continuity

12 - 13

Push 4LO switch

Yes

Release 4LO switch

No

PDIA0204E

TF-230

[TX15B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

COMPONENT INSPECTION

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Disconnect 4LO switch harness connector.

3.

Remove 4LO switch.  Refer to 

TF-202, "Location of Electrical Parts"

 .

4.

Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.

5.

If NG, replace the 4LO switch.

4WD Shift Switch

EDS0038F

CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE

Data are reference value.

TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

Terminal

Condition

Continuity

12 - 13

Push 4LO switch

Yes

Release 4LO switch

No

PDIA0204E

Monitored item [Unit]

Content

Condition

Display value

2WD SWITCH [ON/
OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 2WD

ON

4WD shift switch: 4H and 4LO

OFF

4H SWITCH [ON/OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 4H

ON

4WD shift switch: 2WD and 4LO

OFF

4L SWITCH [ON/OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 4LO

ON

4WD shift switch: 2WD and 4H

OFF

4WD MODE [2H/4H/4L]

Control status of 4WD
(Output condition of 4WD 
shift indicator lamp and 
4LO indicator lamp)

4WD shift switch
(Engine running)

2WD

2H

4H

4H

4LO

4L

Terminal

Wire 

color

Item

Condition

Data (Approx.)

14

G

4WD shift switch (2WD)

Ignition switch: ON

4WD shift switch: 2WD

Battery voltage

4WD shift switch: 4H and 4LO

0V

15

O

4WD shift switch (4H)

4WD shift switch: 4H

Battery voltage

4WD shift switch: 2WD and 4LO

0V

16

W

4WD shift switch (4LO)

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD and 4H

0V

TROUBLE DIAGNOSIS FOR SYSTEM

TF-231

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2007 Pathfinder

DIAGNOSTIC PROCEDURE

1. 

CHECK 4WD SHIFT SWITCH SIGNAL

 With CONSULT-II

1.

Turn ignition switch “ON”.

2.

Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.

3.

Read out ON/OFF switching action of the “2WD SWITCH”, “4H
SWITCH”, “4L SWITCH” with operating 4WD shift switch.

 Without CONSULT-II

1.

Turn ignition switch “ON”.

2.

Check voltage between transfer control unit harness connector
terminals and ground.

OK or NG

OK >> GO 

TO 

5.

NG

>> GO TO 2.

SDIA2382E

Connector

Terminal

Condition

Voltage 

(Approx.)

M152

14 - Ground

4WD shift switch: 2WD

Battery voltage

4WD shift switch: 4H and 4LO

0V

15 - Ground

4WD shift switch: 4H

Battery voltage

4WD shift switch: 2WD and 4LO

0V

 16 - Ground

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD and 4H

0V

SDIA3365E

TF-232

[TX15B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

2. 

CHECK 4WD SHIFT SWITCH POWER SUPPLY CIRCUIT

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Disconnect 4WD shift switch harness connector.

3.

Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.

4.

Turn ignition switch “ON”. (Do not start engine.)

5.

Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.

OK or NG

OK

>> GO TO 3.

NG

>> 1. Check harness for short or open between 4WD shift

switch harness connector terminal 1 and transfer shut
off relay 2 harness connector E157 terminal 5 and
10A fuse (No. 61 located in the fuse block).  If any items are damaged, repair or replace dam-
aged parts.

2. Perform trouble diagnosis for power supply circuit.  Refer to 

TF-222, "Power Supply Circuit For

Transfer Control Unit"

 .

3. 

CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER CONTROL UNIT

1.

Turn ignition switch “OFF”.  (Stay for at least 5 seconds.)

2.

Disconnect transfer control unit harness connector and the 4WD shift switch harness connector.

3.

Check continuity between the following terminals.

–

Transfer control unit harness connector M152 terminal 14 and
4WD shift switch harness connector M141 terminal 3.

–

Transfer control unit harness connector M152 terminal 15 and
4WD shift switch harness connector M141 terminal 5.

–

Transfer control unit harness connector M152 terminal 16 and
4WD shift switch harness connector M141 terminal 6.

Also check harness for short to ground and short to power.

 OK or NG

 OK 

>> GO TO 4.

 NG

>> Repair or replace damaged parts.

Connector

Terminal

Voltage (Approx.)

M141

1 - Ground

0V

SDIA2803E

Connector

Terminal

Voltage (Approx.)

M141

1 - Ground

Battery voltage

SDIA2802E

Continuity should exist.

SDIA3366E