Nissan Pathfinder (2009 year). Manual - part 192

DLN-18

< FUNCTION DIAGNOSIS >

[TRANSFER: ATX14B]

4WD SYSTEM

Actuator Motor

Moves shift rods when signaled by transfer control unit.

Actuator Position Switch

Detects actuator motor position and then sends signal to transfer control unit.

Component Parts Location

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WDIA0124E

2009 Pathfinder

4WD SYSTEM

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CAN Communication

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Refer to 

LAN-57, "CAN System Specification Chart"

.

Cross-Sectional View

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Power Transfer

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POWER TRANSFER DIAGRAM

1.

Center case

2.

Front case

3.

Internal gear

4.

Planetary carrier assembly

5.

Sun gear assembly

6.

Main shaft

7.

L-H sleeve

8.

L-H fork

9.

Shift rod

10. 2-4 sleeve

11.

2-4 fork

12. Drive chain

13. Front drive shaft

14. Control valve assembly

15. Transfer motor

16. Rear case

17. Clutch piston

18. Press flange

19. Multiple disc clutch

20. Clutch hub assembly

21. Clutch drum assembly

WDIA0202E

2009 Pathfinder

DLN-20

< FUNCTION DIAGNOSIS >

[TRANSFER: ATX14B]

4WD SYSTEM

POWER TRANSFER FLOW

1.

Center case

2.

Chain

3.

Multiple disc clutch

4.

Rear case

5.

Mainshaft

6.

Clutch hub assembly

7.

Sub oil pump

8.

Transfer motor

9.

Control valve

10. Front drive shaft

11.

Drain plug

12. 2-4 sleeve

13. Sun gear assembly

14. L-H sleeve

15. Planetary carrier assembly

16. Internal gear

17. Front case

LDIA0053E

2009 Pathfinder

4WD SYSTEM

DLN-21

< FUNCTION DIAGNOSIS >

[TRANSFER: ATX14B]

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SDIA3327E

2009 Pathfinder

DLN-22

< FUNCTION DIAGNOSIS >

[TRANSFER: ATX14B]

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

CONSULT-III Function (ALL MODE AWD/4WD)

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FUNCTION

CONSULT-III can display each diagnostic item using the diagnostic test modes shown following.

SELF-DIAG RESULT MODE

Operation Procedure

1.

Connect CONSULT-III.

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).

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-III.

3.

Touch ERASE on CONSULT-III screen to erase DTC memory.

CAUTION:

If memory cannot be erased, perform applicable diagnosis.

 SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-III)

Description

If the engine starts when there is a malfunction in 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 malfunction, start the self-
diagnosis function. The 4WD warning lamp in the combination meter will indicate the malfunction area by
flashing according to the self-diagnostic results.  Refer to 

DLN-102, "DTC Index"

.

Diagnostic Procedure

1.

Warn up engine. 

2.

Move A/T selector lever to P position.

3.

Turn 4WD shift switch to 2WD position.

4.

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

5.

Turn 4WD shift switch to AUTO position.

6.

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

7.

4WD warning lamp ON.

8.

Move A/T selector lever to R position.

9.

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.

ALL MODE AWD/4WD diagnostic mode

Description

SELF-DIAG RESULTS

Displays transfer control unit self-diagnosis results.

DATA MONITOR

Displays transfer control unit input/output data in real time.

WORK SUPPORT

Supports inspections and adjustments.  Commands are transmitted to the transfer control 
unit for setting the status suitable for required operation, input/output signals are received 
from the transfer control unit and received data is displayed.

CAN DIAG SUPPORT MNTR

The results of transmit/receive diagnosis of CAN communication can be read.

ECU PART NUMBER

Transfer control unit part number can be read.

2009 Pathfinder

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

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< FUNCTION DIAGNOSIS >

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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.

Self-diagnosis example

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-III.

DATA MONITOR MODE

Operation Procedure

1.

Connect CONSULT-III.

2.

Touch DATA MONITOR.

3.

Select from SELECT MONITOR ITEM, screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-III performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed at real time.

Display Item List

×

: Standard

–: Not applicable

PDIA0227E

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELEC-

TION 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 calculated by ECM.
Signal input with CAN communication line.

THRTL POS SEN [V]

×

–

×

Accelerator pedal position (APP) sensor sig-
nal voltage is displayed.
Signal input with CAN communication line.

FLUID TEMP SE [V]

×

–

×

Transfer fluid temperature sensor signal volt-
age is displayed.

BATTERY VOLT [V]

×

–

×

Power supply voltage for transfer control unit.

2WD SWITCH [ON/OFF]

×

–

×

4WD shift switch status is displayed.

AUTO SWITCH [ON/OFF]

×

–

×

4WD shift switch status is displayed.

LOCK SWITCH [ON/OFF]

×

–

×

4WD shift switch status is displayed.
(LOCK means 4H of 4WD shift switch.)

2009 Pathfinder

DLN-24

< FUNCTION DIAGNOSIS >

[TRANSFER: ATX14B]

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

4L SW [ON/OFF]

×

–

×

4WD shift switch status is displayed.
(4L means 4LO of 4WD shift switch.)

N POSI SW TF [ON/OFF]

×

–

×

Neutral-4LO switch signal status is displayed.

ATP SWITCH [ON/OFF]

×

–

×

ATP switch signal status is displayed.

WAIT DETCT SW [ON/OFF]

×

–

×

Wait detection switch status is displayed.

LINE PRES SW [ON/OFF]

×

–

×

Line pressure switch status is displayed.

CL PRES SW [ON / OFF]

×

–

×

Clutch pressure switch status is displayed.

N POSI SW AT [ON/OFF]

×

–

×

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

R POSI SW AT [ON/OFF]

×

–

×

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

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)

VHCL/S COMP [km/h] or [mph]

 –

×

×

Vehicle speed recognized by transfer control 
unit.

COMP CL TORQ [kgm]

 –

×

×

Calculated torque recognized by transfer con-
trol 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 displayed.

4L IND [ON/OFF]

–

–

×

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

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELEC-

TION FROM 

MENU

2009 Pathfinder

DIAGNOSIS SYSTEM (TRANSFER CONTROL UNIT)

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< FUNCTION DIAGNOSIS >

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WORK SUPPORT

When there is no malfunction with transfer and 4WD system, the following symptoms in AUTO mode may be
claimed by a customer: vibration when accelerating on a low 

µ

 road (snow-covered or icy road) or a slight

shock is felt at a few hertz as if it were being pushed lightly from behind.
It is possible to deal with these symptoms by changing the CLUTCH FORCE RELEASE LIMIT VALUE. How-
ever, be careful when changing the value because it may adversely affect driving performance.

Operation Procedure

1.

Connect CONSULT-III.

2.

Touch WORK SUPPORT.

3.

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

Clutch Force Release Limit Adjustment

1.

Initial CLUTCH FORCE RELEASE LIMIT value 0.3 kgm appears under CONDITION SETTING on CON-
SULT-III display.

2.

Touch 1.2 on the display.

3.

Display changes to NOW ADJUSTING in a short time.

4.

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.

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 (clockwise)

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

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.

Monitored item (Unit)

Monitor item selection

Remarks

ECU INPUT 

SIGNALS

MAIN

SIGNALS

SELEC-

TION FROM 

MENU

1.2 kg-m

: Tight corner braking symptom is alleviated. 
However, vibration may occur when acceler-
ating on a low 

µ

 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.

2009 Pathfinder