Nissan Pathfinder (2007 year). Manual - part 397

TROUBLE DIAGNOSIS FOR SYSTEM

TF-57

[ATX14B]

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2007 Pathfinder

DIAGNOSTIC PROCEDURE

1. 

CHECK POWER SUPPLY 

1.

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

2.

Connect transfer control unit harness connector.

3.

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

4.

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

5.

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

OK or NG

OK

>> GO TO 2.

NG

>> Check the following. If any items are damaged, repair or replace damaged parts.

●

10A fuses [No. 21 located in fuse block (J/B) and No. 59 located in the fuse and relay box.
Refer to 

PG-4, "POWER SUPPLY ROUTING CIRCUIT"

  .

●

Harness for short or open between battery and transfer control unit harness connector M153
terminals 47.

●

Harness for short or open between ignition switch and transfer control unit harness connector
M153 terminal 29.

●

Harness for short or open between battery and transfer shut off relay harness connector E155
terminal 1 and 3.

●

Harness for short or open between transfer shut off relay harness connector E155 terminal 2
and transfer control unit harness connector M153 terminal 30.

●

Harness for short or open between transfer shut off relay harness connector E155 terminal 5
and transfer control unit harness connector M152 terminals 16 and 22.

●

Battery and ignition switch. Refer to 

PG-4, "POWER SUPPLY ROUTING CIRCUIT"

  .

●

Transfer shut off relay. Refer to 

TF-59, "COMPONENT INSPECTION"

  .

Connector

Terminal

Voltage (Approx.)

M152

16 - Ground

0V

22 - Ground

M153

29 - Ground 

30 - Ground

Battery voltage

47 - Ground

WDIA0165E

Connector

Terminal

Voltage (Approx.)

M152

16 - Ground

Battery voltage

22 - Ground

M153

29 - Ground 

30 - Ground

0V

47 - Ground

Battery voltage

WDIA0166E

TF-58

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

2. 

CHECK GROUND CIRCUIT

1.

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

2.

Disconnect transfer control unit harness connector.

3.

Check continuity between transfer control unit harness connec-
tor M152 terminals 3, 6, M153 terminal 45 and ground.

Also check harness for short to power.

OK or NG

OK

>> GO TO 3.

NG

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

nectors.

3. 

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

TF-37, "Transfer Control Unit Input/Output Signal Ref-

erence Values"

 .

OK or NG

OK

>> GO TO 4.

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.

4. 

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-132, "Removal and Installation"

 .

Continuity should exist.

SDIA2691E

TROUBLE DIAGNOSIS FOR SYSTEM

TF-59

[ATX14B]

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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. Refer to 

TF-24, "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.

Transfer Control Unit

EDS0036F

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-132, "Removal and Installation"

 .

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-52, "SELF-DIAGNOSTIC

PROCEDURE (WITHOUT CONSULT-II)"

  and 

TF-55, "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-132, "Removal and Installation"

 .

NO

>> Inspection End.

Condition

Continuity

12V direct current supply between terminals 1 and 2

Yes

OFF

No

SCIA1245E

TF-60

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

Output Shaft Revolution Signal (TCM)

EDS0036G

DIAGNOSTIC PROCEDURE

1. 

CHECK DTC WITH TCM

Perform self-diagnosis with TCM. Refer to 

TF-52, "SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)"

 .

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-37, "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 

TF-52, "SELF-DIAGNOSTIC PROCEDURE

(WITH CONSULT-II)"

 .

Vehicle Speed Sensor (ABS)

EDS0036H

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"

  .

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-37, "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) again. Refer to 

BRC-29,

"SELF-DIAGNOSIS"

 .

TROUBLE DIAGNOSIS FOR SYSTEM

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[ATX14B]

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2007 Pathfinder

Neutral-4LO Switch

EDS0036I

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

N POSI SW TF [ON/
OFF]

Condition of neutral-4LO 
switch

●

Vehicle stopped

●

Engine running

●

A/T selector lever “N” 
position

●

Brake pedal depressed

4WD shift switch: 2WD, 
AUTO or 4H

OFF

4WD shift switch: 4H to 
4LO (While actuator 
motor is operating.)

OFF 

→

 ON

4WD shift switch: 4LO to 
4H (While actuator motor 
is operating.)

ON 

→

 OFF

4WD shift switch: 4LO

ON

Terminal

Wire 

color

Item

Condition

Data (Approx.)

25

Y

Neutral-4LO switch

●

Vehicle stopped

●

Engine running

●

A/T selector 
lever “N” position

●

Brake pedal 
depressed

4WD shift switch: 2WD, AUTO or 4H

Battery voltage

4WD shift switch: 4H to 4LO (While actua-
tor motor is operating.)

Battery volt-
age 

→

 0V

4WD shift switch: 4LO to 4H (While actua-
tor motor is operating.)

0V 

→

 Battery 

voltage

4WD shift switch: 4LO

 0V

TF-62

[ATX14B]

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 “N POSI SW TF”.

 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 NEUTRAL-4LO SWITCH

1.

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

2.

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

3.

Check continuity between transfer control unit harness connec-
tor M153 terminal 25 and neutral-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: 2WD, 
AUTO or 4H

OFF

4WD shift switch: 4H to 
4LO (While actuator 
motor is operating.)

OFF 

→

 ON

4WD shift switch: 4LO to 
4H (While actuator motor 
is operating.)

ON 

→

 OFF

4WD shift switch: 4LO

ON

SDIA2692E

Connector

Terminal

Condition

Voltage 

(Approx.)

M153

 25  - 

Ground

●

Vehicle stopped

●

Engine running

●

A/T selector lever 
“N” position

●

Brake pedal 
depressed

4WD shift switch: 
2WD, AUTO or 4H

Battery 
voltage

4WD shift switch: 4H 
to 4LO (While actuator 
motor is operating.)

Battery 
voltage 

→

 0V

4WD shift switch: 4LO 
to 4H (While actuator 
motor is operating.)

0V 

→

 

Battery 
voltage

4WD shift switch: 4LO

 0V

SDIA2693E

Continuity should exist.

SDIA2694E

TROUBLE DIAGNOSIS FOR SYSTEM

TF-63

[ATX14B]

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TF

2007 Pathfinder

3. 

CHECK GROUND CIRCUIT

1.

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

2.

Disconnect neutral-4LO switch harness connector.

3.

Check continuity between neutral-4LO switch harness connec-
tor 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”.

2.

Disconnect neutral-4LO switch harness connector.

3.

Remove neutral-4LO switch.  Refer to 

TF-24, "Location of Electrical Parts"

 .

4.

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

OK or NG

OK

>> GO TO 5.

NG

>> Replace neutral-4LO switch. Refer to 

TF-24, "Location

of Electrical Parts"

 .

5. 

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

TF-37, "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-132, "Removal and Installation"

 .

Continuity should exist.

SDIA2695E

Terminal

Condition

Continuity

12 - 13

Push neutral-4LO switch

Yes

Release neutral-4LO switch

No

SDIA2696E

TF-64

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

COMPONENT INSPECTION

1.

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

2.

Disconnect neutral-4LO switch harness connector.

3.

Remove neutral-4LO switch. Refer to 

TF-24, "Location of Electrical Parts"

 .

4.

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

5.

If NG, replace the neutral-4LO switch.  Refer to 

TF-24, "Location

of Electrical Parts"

 .

4WD Shift Switch

EDS0036J

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 neutral-4LO switch

Yes

Release neutral-4LO switch

No

SDIA2696E

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: AUTO, 4H or 4LO

OFF

AUTO SWITCH [ON/
OFF]

Input condition from 4WD 
shift switch

4WD shift switch: AUTO

ON

4WD shift switch: 2WD, 4H or 4LO

OFF

LOCK SWITCH [ON/
OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 4H

ON

4WD shift switch: 2WD, AUTO or 4LO

OFF

4L SWITCH [ON/OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 4LO

ON

4WD shift switch: 2WD, AUTO or 4H

OFF

4WD MODE [AUTO/
LOCK/2WD/4L]

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

●

Vehicle stopped

●

Engine running

●

A/T selector lever “N” 
position

●

Brake pedal depressed

4WD shift switch: 2WD

2WD

4WD shift switch: AUTO

AUTO

4WD shift switch: 4H

LOCK

4WD shift switch: 4LO

4L

Terminal

Wire 

color

Item

Condition

Data (Approx.)

9

G

4WD shift switch
(2WD)

Ignition switch: ON

4WD shift switch: 2WD

Battery voltage

4WD shift switch: AUTO, 4H or 4LO

0V

18

O

4WD shift switch
(4H)

Ignition switch: ON

4WD shift switch: 4H

Battery voltage

4WD shift switch: 2WD, AUTO or 4LO

 0V

23

W

4WD shift switch
(4LO)

Ignition switch: ON

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD, AUTO or 4H

 0V

24

LG

4WD shift switch
(AUTO)

Ignition switch: ON

4WD shift switch: AUTO

Battery voltage

4WD shift switch: 2WD, 4H or 4LO

 0V