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Nissan Pathfinder (2005 year). Manual - part 429

TROUBLE DIAGNOSIS

TF-51

[ATX14B]

2005 Pathfinder

P POSI SW AT [ON/OFF]

–

“P” position signal of A/T PNP switch status is
displayed.
Signal input with CAN communication line.

ABS OPER SW [ON/OFF]

–

ABS operation signal status is displayed.
Signal input with CAN communication line.

VDC OPER SW [ON/OFF]

–

VDC operation signal status is displayed.
Signal input with CAN communication line.

TCS OPER SW [ON/OFF]

–

TCS operation signal status is displayed.
Signal input with CAN communication line.

THROTTLE POSI [0.0/8]

–

Thottle position status is displayed.
Signal input with CAN communication line.

4WD MODE [AUTO/LOCK/2WD/4L]

–

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

VHLC/S COMP [km/h] or [mph]

–

Vehicle speed recognized by transfer control
unit.

COMP CL TORQ [kgm]

–

Calculated torque recognized by transfer
control unit.

DUTY SOLENOID [%]

–

Control value of clutch pressure solenoid.

2-4WD SOL [ON/OFF]

–

Output condition to 2-4WD solenoid.

2-4WD SOL MON [ON/OFF]

–

Check signal for transfer control unit signal
output.

MOTOR RELAY [ON/OFF]

–

Transfer motor relay signal status is dis-
played.

MOTOR RELAY MON [ON/OFF]

–

Check signal for transfer control unit signal
output.

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
(2WD indicator lamp) is displayed.

AUTO IND [ON/OFF]

–

Control status of 4WD shift indicator lamp
(2WD and AUTO indicator lamp) is displayed.

LOCK IND [ON/OFF]

–

Control status of 4WD shift indicator lamp
(2WD, AUTO and Lock indicator) is dis-
played.

4L IND [ON/OFF]

–

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

ATP IND [ON/OFF]

–

Control status of ATP warning lamp is dis-
played.

SHIFT POS SW1 [ON/OFF]

–

Actuator position switch 1 (Low) signal status
is displayed.

SHIFT POS SW2 [ON/OFF]

–

Actuator position switch 2 (high) signal status
is displayed.

SHIFT ACT1 [ON/OFF]

–

Output condition to actuator motor (clock-
wise)

SHIFT AC MON1 [ON/OFF]

–

Check signal for transfer control unit signal
output

SHIFT ACT2 [ON/OFF]

–

Output condition to actuator motor (counter-
clockwise)

SHIFT AC MON2 [ON/OFF]

–

Check signal for transfer control unit signal
output

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT

SIGNALS

MAIN

SIGNALS

SELEC-

TION FROM

TF-52

[ATX14B]

TROUBLE DIAGNOSIS

2005 Pathfinder

WORK SUPPORT

When there is no problem with transfer and 4WD system, following symptom in “AUTO” mode may be claimed
by a customer.

●

Vibration when accelerating on a low

road (snow-covered or icy road)

It is possible to deal with these symptoms by changing “CLUTCH FORCE RELEASE LIMIT VALUE”.
However, be careful when changing the values because it may adversely affect driving performance.

NOTE:
A slight shock is felt at a few hertz as if it were being pushed lightly from behind.

Operation Procedure

Perform “CONSULT-II SETTING PROCEDURE”. Refer to

TF-47, "CONSULT-II SETTING PROCEDURE"

Touch “WORK SUPPORT”.

Select from “CLUTCH/F RLS LIM ADJ”, screen of data monitor mode is displayed.

T/F F SPEED [km/h] or [mph]

–

Displayed, but do not use.

A/T R SPEED [km/h] or [mph]

–

Output shaft revolution signal (Revolution
sensor) calculated by TCM.
Signal input with CAN communication line.

AT GEAR POSI [1/2/3/4/5]

–

A/T actual gear position is displayed.

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

SELEC-

TION FROM

TROUBLE DIAGNOSIS

TF-53

[ATX14B]

2005 Pathfinder

Clutch Force Release Limit Adjustment

Initial CLUTCH FORCE RELEASE LIMIT value “0.3 kgm”
appears under “CONDITION SETTING” on CONSULT-II display.

Touch “1.2” on the display.

Display changes to “NOW ADJUSTING” in a short time.

When clutch force release limit value is set to “1.2 kgm”, current
value “0.3 kgm” shown on display will be replaced by “1.2 kgm”
and “ADJUSTMENT COMPLETE” will appear at the same time.
Clutch force release limit value setting is now complete.

Self-diagnostic Procedure

EDS001J9

SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)

Refer to

TF-48, "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-54, "Diagnostic Procedure"

1.2 kg-m

: Tight corner braking symptom is allevi-
ated. However, vibration may occur when
accelerating on a low

road (icy road, etc.).

0.3 kg-m

: Initial set value.

0.2 kg-m

: Do not set to this value because the tight
corner braking symptom will get worse.

SMT968D

SMT969D

SMT970D

TF-54

[ATX14B]

TROUBLE DIAGNOSIS

2005 Pathfinder

Diagnostic Procedure

Warn up engine.

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

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

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

Turn 4WD shift switch to “AUTO” position.

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

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

TF-123, "4WD Warning Lamp Does Not Turn ON"

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

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

10. Move A/T selector lever to “D” position.
11. Turn 4WD shift switch to “4H”, “AUTO” and “4H” in order.

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

13. Turn 4WD shift switch to “AUTO” position.

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

15. Read the flickering of 4WD warning lamp.

Refer to

TF-54, "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

Malfunction

Check items

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-61, "Output Shaft
Revolution Signal
(TCM)"

Clutch pressure sole-
noid signal

Proper voltage is not applied to clutch pressure solenoid
valve due to open or short circuit.

TF-88, "Clutch Pres-
sure Solenoid"

2-4WD solenoid signal

Proper voltage is not applied to 2-4WD solenoid valve due
to open or short circuit.

TF-93, "2-4WD Sole-
noid"

Transfer motor

Transfer motor does not operate properly due to open or
short circuit in transfer motor or transfer motor relay.

TF-97, "Transfer Motor"

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-61, "Vehicle Speed
Sensor (ABS)"

CAN communication

Malfunction has been detected from CAN communication
line.

TF-116, "CAN Commu-
nication Line"

AD converter

AD converter system of transfer control unit is malfunction-
ing.

TF-57, "Power Supply
Circuit For Transfer
Control Unit"

TROUBLE DIAGNOSIS

TF-55

[ATX14B]

2005 Pathfinder

Transfer fluid tempera-
ture

Signal voltage from transfer fluid temperature sensor is
abnormally high (Transfer fluid temperature is abnormally
low) while driving.

TF-104, "Transfer Fluid
Temperature"

Neutral-4LO switch

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

TF-62, "Neutral-4LO
Switch"

Clutch pressure switch

●

Improper signal is input due to open or short circuit.

●

Malfunction occurs in clutch pressure switch or hydraulic
circuit.

TF-107, "Clutch Pres-
sure Switch"

Line pressure switch

●

Improper signal is input due to open or short circuit.

●

Malfunction occurs in line pressure switch or hydraulic
circuit.

TF-110, "Line Pressure
Switch"

Engine speed signal
(from ECM)

●

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

●

Improper signal is input while driving.

TF-88, "Engine Speed
Signal (ECM)"

Accelerator pedal
position sensor (from
ECM)

●

Malfunction is detected in accelerator pedal position sig-
nal that is output from ECM through CAN communica-
tion.

●

Signal voltage from accelerator pedal position sensor is
abnormally high or low.

ACC-2, "ACCELERA-
TOR CONTROL SYS-
TEM"

Power supply

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

TF-57, "Power Supply
Circuit For Transfer
Control Unit"

4WD shift switch

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

TF-65, "4WD Shift
Switch"

ABS operation signal
(from ABS)

Malfunction is detected in ABS operation signal that is out-
put from ABS actuator and electric unit (control unit)
through CAN communication.

TF-113, "ABS Opera-
tion Signal (ABS)"

Wait detection switch

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

TF-69, "Wait Detection
Switch"

Actuator

●

Motor does not operate properly due to open or short cir-
cuit 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 and
transfer shift low relay.

TF-73, "Actuator
Motor"

TF-57, "Power

Supply Circuit For
Transfer Control Unit"

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-80, "Actuator Posi-
tion Switch"

Actuator circuit

●

Transfer control device actuator circuit is shorted or
open. (Malfunctions are detected when motor relay cir-
cuit is open/shorted or relay transfer shift circuit is open/
shorted.)

●

Malfunction occurs in transfer control device drive circuit.

TF-84, "Transfer Con-
trol Device"

Malfunction is detected in transfer shut off relay.

TF-57, "Power Supply
Circuit For Transfer
Control Unit"

VDC operation signal
(from VDC)

Malfunction is detected in VDC operation signal that is out-
put from ABS actuator and electric unit (control unit)
through CAN communication.

TF-114, "VDC Opera-
tion Signal (ABS)"

TCS operation signal
(from TCS)

Malfunction is detected in TCS operation signal that is out-
put from ABS actuator and electric unit (control unit)
through CAN communication.

TF-114, "TCS Opera-
tion Signal (ABS)"

Flickering pattern or

flickering condition

Items

Malfunction

Check items

TF-56

[ATX14B]

TROUBLE DIAGNOSIS

2005 Pathfinder

CAUTION:

●

If “CAN communication” is displayed with other DTCs, first perform the trouble diagnosis for CAN communication line.

●

If “ABS operation signal”, “VDC operation signal” or “TCS operation signal” is displayed, first perform the trouble diag-
nosis for ABS system.

●

If “Output shaft revolution signal” is displayed, first perform the trouble diagnosis for A/T system.

NOTE:

●

If "actuator position switch" or “actuator circuit” is displayed, first erase self-diagnostic results. ("Actuator position switch" or “actua-
tor circuit” may be displayed after installing transfer control unit or transfer assembly.)

●

If “clutch pressure switch” or “line pressure switch” is displayed only while driving in reverse, check the continuity of “R” position on
A/T PNP switch. When there is nothing wrong with the electrical system, check the hydraulic system.

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.

PNP switch signal
(from TCM)

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

TF-72, "PNP Switch
Signal (TCM)"

Repeats flickering
every 2 to 5 sec.

—

Circuits that the self-diagnosis covers have no malfunction.

—

Repeats flickering
every 0.25 sec.

Data erase display

●

Power supply failure of memory back-up.

●

Battery performance is poor.

TF-57, "Power Supply
Circuit For Transfer
Control Unit"

No flickering

PNP switch or 4WD
shift switch

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

TF-72, "PNP Switch
Signal (TCM)"

TF-65,

"4WD Shift Switch"

Flickering pattern or

flickering condition

Items

Malfunction

Check items

TROUBLE DIAGNOSIS FOR SYSTEM

TF-57

[ATX14B]

2005 Pathfinder

TROUBLE DIAGNOSIS FOR SYSTEM

PFP:00000

Power Supply Circuit For Transfer Control Unit

EDS001JA

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.)

Ground

Always

Ground

Always

Power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF

W/G

Ignition switch monitor

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Shut off relay

Ignition switch: ON

Ignition switch: OFF

Battery voltage

Ground

Always

Power supply
(Memory back-up)

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Battery voltage

TF-58

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2005 Pathfinder

DIAGNOSTIC PROCEDURE

CHECK POWER SUPPLY

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

Connect transfer control unit harness connector.

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

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

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

OK or NG

>> GO TO 2.

>> 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-60, "COMPONENT INSPECTION"

Connector

Terminal (Wire color)

Voltage (Approx.)

M152

16 - Ground

22 - Ground

M153

29 - Ground

30 - Ground

Battery voltage

47 - Ground

WDIA0165E

Connector

Terminal (Wire color)

Voltage (Approx.)

M152

16 - Ground

Battery voltage

22 - Ground

M153

29 - Ground

30 - Ground

47 - Ground

Battery voltage

WDIA0166E

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