Nissan Pathfinder (2007 year). Manual - part 417

TROUBLE DIAGNOSIS

TF-217

[TX15B]

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TF

2007 Pathfinder

SELF-DIAG RESULT MODE
Operation Procedure

1.

Perform “CONSULT-II SETTING PROCEDURE”. Refer to 

TF-216, "CONSULT-II START PROCEDURE"

 .

2.

With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.

NOTE:
The details for "TIME" are as follows:

●

"0": Error currently detected with transfer control unit.

●

Except for "0": Error detected in the past and memorized with
transfer control unit.
Detects frequency of driving after DTC occurs (frequency of
turning ignition switch "ON/OFF").

Display Item List

SDIA2687E

Items (CONSULT-II screen 

terms)

Diagnostic item is detected when...

Check item

*INITIAL START*
[P1801]

Due to removal of battery which cuts off power supply to transfer 
control unit, self-diagnosis memory function is suspended.

TF-222, "Power Supply Circuit 
For Transfer Control Unit"

CONTROL UNIT 1
[P1802]

Malfunction is detected in the memory (RAM) system of transfer 
control unit.

TF-225, "Transfer Control Unit"

CONTROL UNIT 2
[P1803]

Malfunction is detected in the memory (ROM) system of transfer 
control unit.

TF-225, "Transfer Control Unit"

CONTROL UNIT 3
[P1804]

Malfunction is detected in the memory (EEPROM) system of trans-
fer control unit.

TF-225, "Transfer Control Unit"

VHCL SPEED SEN·AT
[P1807]

●

Malfunction is detected in output shaft revolution signal that is 
output from TCM through CAN communication.

●

Improper signal is input while driving.

TF-225, "Output Shaft Revolu-
tion Signal (TCM)"

VHCL SPEED SEN·ABS
[P1808]

●

Malfunction is detected in vehicle speed signal that is output from 
ABS actuator and electric unit (control unit) through CAN commu-
nication.

●

Improper signal is input while driving.

TF-226, "Vehicle Speed Sensor 
(ABS)"

CONTROL UNIT 4
[P1809]

AD converter system of transfer control unit is malfunctioning.

TF-225, "Transfer Control Unit"

4L POSI SW TF
[P1810]

Improper signal from 4LO switch is input due to open or short circuit.

TF-227, "4LO Switch"

BATTERY VOLTAGE
[P1811]

Power supply voltage for transfer control unit is abnormally low 
while driving.

TF-222, "Power Supply Circuit 
For Transfer Control Unit"

4WD MODE SW
[P1813]

More than two switch inputs are simultaneously detected due to 
short circuit of 4WD shift switch.

TF-230, "4WD Shift Switch"

4WD DETECT SWITCH
[P1814]

Improper signal from wait detection switch is input due to open or 
short circuit.

TF-234, "Wait Detection Switch"

PNP SW/CIRC
[P1816]

When A/T PNP switch signal is malfunction or communication error 
between the vehicles.

TF-237, "PNP Switch Signal"

SHIFT ACTUATOR
[P1817]

●

Motor does not operate properly due to open or short circuit in 
actuator motor.

●

Malfunction is detected in the actuator motor. (When 4WD shift 
switch is operated and actuator motor is not operated)

●

Malfunction is detected in transfer shift high relay or transfer shift 
low relay.

TF-238, "Actuator Motor"

SHIFT ACT POSI SW
[P1818]

●

Improper signal from actuator position switch is input due to open 
or short circuit.

●

Malfunction is detected in actuator position switch.

TF-245, "Actuator Position 
Switch"

TF-218

[TX15B]

TROUBLE DIAGNOSIS

2007 Pathfinder

CAUTION:

If “CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform the trouble diagnosis for CAN communication
line.

NOTE:
If “SHIFT ACT POSI SW [P1818]” or “SHIFT ACT CIR [P1819]” is displayed, first erase self-diagnostic results. (“SHIFT ACT POSI SW
[P1818]” or “SHIFT ACT CIR [P1819]” may be displayed after installing transfer control unit or transfer assembly.)

How to Erase Self-diagnostic Results

1.

Perform applicable inspection of malfunctioning item and then repair or replace.

2.

Start engine and select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.

3.

Touch “ERASE” on CONSULT-II screen to erase DTC memory.

CAUTION:

If memory cannot be erased, perform applicable diagnosis.

DATA MONITOR MODE
Operation Procedure

1.

Perform “CONSULT-II SETTING PROCEDURE”. Refer to 

TF-216, "CONSULT-II START PROCEDURE"

 .

2.

Touch “DATA MONITOR”.

3.

Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.

NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.

Display Item List

×

: Standard

–: Not applicable

SHIFT ACT CIR
[P1819]

●

Malfunction is detected in transfer shut off relay 1 and transfer 
shut off relay 2.

●

Malfunction occurs in transfer control device drive circuit.

TF-222, "Power Supply Circuit 
For Transfer Control Unit"

, 

TF-

248, "Transfer Control Device"

ENGINE SPEED SIG
[P1820]

●

Malfunction is detected in engine speed signal that is output from 
ECM through CAN communication.

●

Improper signal is input while driving.

TF-251, "Engine Speed Signal"

CAN COMM CIRCUIT
[U1000]

Malfunction has been detected from CAN communication line.

TF-252, "CAN Communication 
Line"

NO DTC IS DETECTED.
FURTHER TESTING MAY 
BE REQUIRED.

No NG item has been detected.

—

Items (CONSULT-II screen 

terms)

Diagnostic item is detected when...

Check item

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION 

FROM MENU

VHCL/S SEN·FR [km/h] or [mph]

×

–

×

Wheel speed calculated by ABS actuator 
and electric unit (control unit).
Signal input with CAN communication line.

VHCL/S SEN·RR [km/h] or [mph]

×

–

×

Wheel speed calculated by TCM.
Signal input with CAN communication line.

ENGINE SPEED [rpm]

×

–

×

Engine speed is displayed.
Signal input with CAN communication line.

BATTERY VOLT [V]

×

–

×

Power supply voltage for transfer control 
unit.

2WD SWITCH [ON/OFF]

×

–

×

4WD shift switch signal status is dis-
played.
(4L means 4LO of 4WD shift switch.)

4H SWITCH [ON/OFF]

×

–

×

4L SWITCH [ON/OFF]

×

–

×

4L POSI SW [ON/OFF]

×

–

×

This means 4LO switch.
4LO switch signal status is displayed.

TROUBLE DIAGNOSIS

TF-219

[TX15B]

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2007 Pathfinder

Self-Diagnostic Procedure

EDS00389

 SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)

Refer to 

TF-217, "SELF-DIAG RESULT MODE"

 .

 SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)

Description

If the engine starts when there is something wrong with the 4WD system, the 4WD warning lamp turns ON or
flickers in the combination meter. When the system functions properly, the warning lamp turns ON when the
ignition switch is turned to “ON”, and it turns OFF after engine starts. To locate the cause of a problem, start
the self-diagnosis function. The 4WD warning lamp in the combination meter will indicate the problem area by
flickering according to the self-diagnostic results. As for the details of the 4WD warning lamp flickering pat-
terns, refer to 

TF-220, "Diagnostic Procedure"

 .

ATP SWITCH [ON/OFF]

×

–

×

ATP switch signal status is displayed.

WAIT DETCT SW [ON/OFF]

×

–

×

Wait detection switch signal status is dis-
played.

4WD MODE [2H/4H/4L]

–

×

×

Control status of 4WD recognized by 
transfer control unit. (2WD, 4H or 4LO)

VHCL/S COMP [km/h] or [mph]

–

×

×

Vehicle speed recognized by transfer con-
trol unit.

SHIFT ACT 1 [ON/OFF]

–

×

×

Output condition to actuator motor (clock-
wise)

SHIFT AC MON 1 [ON/OFF]

–

–

×

Check signal for transfer control unit sig-
nal output

SHIFT ACT 2 [ON/OFF]

–

×

×

Output condition to actuator motor (coun-
terclockwise)

SHIFT AC MON 2 [ON/OFF]

–

–

×

Check signal for transfer control unit sig-
nal output

SFT ACT/R MON [ON/OFF]

–

–

×

Operating condition of actuator motor 
relay (integrated in transfer control unit)

SHIFT POS SW 1 [ON/OFF]

×

–

×

Condition of actuator position switch 1

SHIFT POS SW 2 [ON/OFF]

×

–

×

Condition of actuator position switch 2

SHIFT POS SW 3 [ON/OFF]

×

–

×

Condition of actuator position switch 3

SHIFT POS SW 4 [ON/OFF]

×

–

×

Condition of actuator position switch 4

4WD FAIL LAMP [ON/OFF]

–

×

×

Control status of 4WD warning lamp is dis-
played.

2WD IND [ON/OFF]

–

–

×

Control status of 4WD shift indicator lamp 
(rear) is displayed.

4H IND [ON/OFF]

–

–

×

Control status of 4WD shift indicator lamp 
(front and center) is displayed.

4L IND [ON/OFF]

–

–

×

Control status of 4LO indicator lamp is dis-
played.

Voltage [V]

–

–

×

The value measured by the voltage probe 
is displayed.

Frequency [Hz]

–

–

×

The value measured by the pulse probe is 
displayed.

DUTY-HI (high) [%]

–

–

×

DUTY-LOW (low) [%]

–

–

×

PLS WIDTH-HI [msec]

–

–

×

PLS WIDTH-LOW [msec]

–

–

×

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELECTION 

FROM MENU

TF-220

[TX15B]

TROUBLE DIAGNOSIS

2007 Pathfinder

Diagnostic Procedure

1.

Warn up engine.

2.

Turn ignition switch “ON” and “OFF” at least twice, and then turn ignition switch “OFF”.

3.

Move A/T selector lever to “P” position.

4.

Turn 4WD shift switch to “2WD” position.

5.

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

6.

4WD warning lamp ON.
If 4WD warning lamp does not turn ON, refer to 

TF-259, "4WD Warning Lamp Does Not Turn ON"

 .

7.

Move A/T selector lever to “R” position.

8.

Turn 4WD shift switch to “2WD”, “4H” and “2WD” in order.

9.

Move A/T selector lever to “P” position.

10. Turn 4WD shift switch to “4H”, “2WD” and “4H” in order.

11. Move A/T selector lever to “N” position.

12. Turn 4WD shift switch to “2WD” position.

13. Move A/T selector lever to “P” position.

14. Read the flickering of 4WD warning lamp.

Refer to 

TF-220, "Judgement Self-diagnosis"

 .

Judgement Self-diagnosis

When a malfunction is detected, the malfunction route is indicated by flickering of the 4WD warning lamp.

PDIA0227E

Flickering pattern or 

flickering condition

Items

Diagnostic item is detected when...

Check item

2

Output shaft revolution 
signal (from TCM)

●

Malfunction is detected in output shaft revolution signal 
that is output from TCM through CAN communication.

●

Improper signal is input while driving.

TF-225, "Output Shaft 
Revolution Signal 
(TCM)"

3

Vehicle speed signal 
(from ABS)

●

Malfunction is detected in vehicle speed signal that is 
output from ABS actuator and electric unit (control unit) 
through CAN communication.

●

Improper signal is input while driving.

TF-226, "Vehicle 
Speed Sensor (ABS)"

4

CAN communication

Malfunction has been detected from CAN communication.

TF-252, "CAN Commu-
nication Line"

5

AD converter

AD converter system of transfer control unit is malfunc-
tioning.

TF-225, "Transfer Con-
trol Unit"

6

4LO switch

Improper signal from 4LO switch is input due to open or 
short circuit.

TF-227, "4LO Switch"

7

Engine speed signal

●

Malfunction is detected in engine speed signal that is 
output from ECM through CAN communication.

●

Improper signal is input while driving.

TF-251, "Engine Speed 
Signal"

8

Power supply

Power supply voltage for transfer control unit is abnor-
mally low while driving.

TF-222, "Power Sup-
ply Circuit For Transfer 
Control Unit"

TROUBLE DIAGNOSIS

TF-221

[TX15B]

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TF

2007 Pathfinder

NOTE:
If “actuator position switch” or “transfer control device” is displayed, first erase self-diagnostic results. (They may be displayed after
installing transfer control unit or transfer assembly.)

ERASE SELF-DIAGNOSIS

●

In order to make it easier to find the cause of hard-to-duplicate malfunctions, malfunction information is
stored into the control unit as necessary during use by the user. This memory is not erased no matter how
many times the ignition switch is turned ON and OFF.

●

However, this information is erased by turning ignition switch “OFF” after performing self-diagnostics or by
erasing the memory using the CONSULT-II.

9

4WD shift switch

More than two switch inputs are simultaneously detected 
due to short circuit of 4WD shift switch.

TF-230, "4WD Shift 
Switch"

10

Wait detection switch

Improper signal from wait detection switch is input due to 
open or short circuit.

TF-234, "Wait Detec-
tion Switch"

11

Actuator motor

●

Motor does not operate properly due to open or short 
circuit in actuator motor.

●

Malfunction is detected in the actuator motor. (When 
4WD shift switch is operated and actuator motor is not 
operated.)

●

Malfunction is detected in transfer shift high relay or 
transfer shift low relay.

TF-238, "Actuator 
Motor"

12

Actuator position switch

●

Improper signal from actuator position switch is input 
due to open or short circuit.

●

Malfunction is detected in the actuator position switch.

TF-245, "Actuator Posi-
tion Switch"

13

Transfer control device

●

Malfunction is detected in transfer shut off relay 1 and 
transfer shut off 2.

●

Malfunction occurs in transfer control device drive cir-
cuit.

TF-222, "Power Sup-
ply Circuit For Transfer 
Control Unit"

, 

TF-248, 

"Transfer Control 
Device"

14

PNP switch signal

When A/T PNP switch signal is malfunction or communi-
cation error between the vehicles.

TF-237, "PNP Switch 
Signal"

Repeats flickering 

every 0.25 sec.

Data erase display

●

Power supply failure of memory back-up.

●

Battery is disconnected for a long time.

●

Battery performance is poor.

TF-222, "Power Sup-
ply Circuit For Transfer 
Control Unit"

Repeats flickering 

every 2 to 5 sec.

—

Circuits that the self-diagnosis covers have no malfunc-
tion.

—

No flickering

PNP switch or 4WD 
shift switch

PNP switch or 4WD shift switch circuit is shorted or open.

TF-237, "PNP Switch 
Signal"

 or 

TF-230, 

"4WD Shift Switch"

Flickering pattern or 

flickering condition

Items

Diagnostic item is detected when...

Check item

TF-222

[TX15B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

TROUBLE DIAGNOSIS FOR SYSTEM

PFP:00000

Power Supply Circuit For Transfer Control Unit

EDS0038A

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 [Unit]

Content

Condition

Display value

BATTERY VOLT [V]

Power supply voltage for 
transfer control unit

Ignition switch: ON

Battery voltage

Terminal

Wire 

color

Item

Condition

Data (Approx.)

6

B

Ground

Always

0V

18

B

Ground

Always

0V

19

R

Power supply
(Memory back-up)

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Battery voltage

25

W/G

Ignition switch monitor

Ignition switch: ON

Battery voltage

Ignition switch: OFF

0V

32

B

Actuator motor ground

Always

0V

40

V

Transfer shut off relay

Ignition switch: ON

0V

Ignition switch: OFF (5 seconds after ignition switch is turned 
OFF)

Battery voltage

44

Y

Power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF (5 seconds after ignition switch is turned 
OFF)

0V

45

GR

Power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF (5 seconds after ignition switch is turned 
OFF)

0V

TROUBLE DIAGNOSIS FOR SYSTEM

TF-223

[TX15B]

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TF

2007 Pathfinder

DIAGNOSTIC PROCEDURE

1. 

CHECK POWER SUPPLY

1.

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

2.

Disconnect 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.

●

40A fuse (No. j , located in the fuse and fusible link box). Refer to 

PG-4, "POWER SUPPLY

ROUTING CIRCUIT"

 .

●

10A fuses (No. 21, located in the fuse block-junction block (J/B) and 60 and 61 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 M152
terminal 19.

●

Harness for short or open between battery and transfer shut off relay 2 harness connector E157
terminal 1 and 3.

●

Harness for short or open between battery and transfer shut off relay 1 harness connector E156
terminal 3.

●

Harness for short or open between ignition switch and transfer control unit harness connector
M152 terminal 25.

●

Harness for short or open between ignition switch and transfer shut off relay 1 harness connec-
tor E156 terminal 1.

●

Harness for short or open between transfer shut off relay 2 harness connector E157 terminal 5
and transfer control unit harness connector M153 terminals 44, 45.

●

Harness for short or open between transfer shut off relay 1 harness connector E156 terminal 5
and transfer control unit harness connector M153 terminals 44, 45.

●

Harness for short or open between transfer shut off relay 2 harness connector E157 terminal 2
and transfer control unit harness connector M153 terminal 40.

●

Harness for open between transfer shut off relay 1 harness connector E156 terminal 2 and
ground.

●

Battery and ignition switch. Refer to 

PG-4, "POWER SUPPLY ROUTING CIRCUIT"

 .

●

Transfer shut off relay 1, 2. Refer to 

TF-225, "COMPONENT INSPECTION"

 .

Connector

Terminal

Voltage (Approx.)

M152

19 - Ground

Battery voltage

25 - Ground

0V

M153

40 - Ground

Battery voltage

44 - Ground

0V

45 - Ground

SDIA3360E

Connector

Terminal

Voltage (Approx.)

M152

19 - Ground

Battery voltage

25 - Ground

M153

40 - Ground

44 - Ground

45 - Ground

SDIA3361E

TF-224

[TX15B]

TROUBLE DIAGNOSIS FOR SYSTEM

2007 Pathfinder

2. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect transfer control unit harness connector.

3.

Check continuity between transfer control unit harness connec-
tor M152 terminals 6 and 18, and M153 terminal 32 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-211, "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-268, "Removal and Installation"

 .

Continuity should exist.

SDIA3362E