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Nissan Pathfinder (2010 year). Manual - part 209

TRANSFER CONTROL UNIT

DLN-245

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

DLN

ABDIA0119GB

2010 Pathfinder

DLN-246

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

ABDIA0120GB

2010 Pathfinder

TRANSFER CONTROL UNIT

DLN-247

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

DLN

DTC Index

INFOID:0000000005258411

DTC CHART

ABDIA0121GB

2010 Pathfinder

DLN-248

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

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.)

FLASH CODE CHART

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1801] *INITIAL START*

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

DLN-204

[P1802]

CONTROL UNIT (1,2,3)

Malfunction is detected in the memory (RAM) sys-
tem of transfer control unit.

DLN-207

[P1803]

Malfunction is detected in the memory (ROM) sys-
tem of transfer control unit.

[P1804]

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

[P1807] VHCL SPEED SEN·AT

• Malfunction is detected in output shaft revolution

signal that is output from TCM through CAN
communication.

• Improper signal is input while driving.

DLN-209

[P1808] VHCL SPEED SEN·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.

DLN-210

[P1809] CONTROL UNIT 4

AD converter system of transfer control unit is mal-
functioning.

DLN-207

[P1810] 4L POSI SW TF

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

DLN-211

[P1811]

BATTERY VOLTAGE

Power supply voltage for transfer control unit is ab-
normally low while driving.

DLN-204

[P1813] 4WD MODE SW

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

DLN-214

[P1814] 4WD DETECT SWITCH

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

DLN-217

[P1816] PNP SW/CIRC

When transmission range switch signal is malfunc-
tion or communication error between the modules.

DLN-220

[P1817] SHIFT ACTUATOR

• 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.

DLN-221

[P1818] SHIFT ACT POSI SW

• Improper signal from actuator position switch is

input due to open or short circuit.

• Malfunction is detected in actuator position

switch.

DLN-228

[P1819] SHIFT ACT CIR

• Malfunction is detected in transfer shut off relay

1 and transfer shut off relay 2.

• Malfunction occurs in transfer control device

drive circuit.

DLN-231

[P1820] ENGINE SPEED SIG

• Malfunction is detected in engine speed signal

that is output from ECM through CAN communi-
cation.

• Improper signal is input while driving.

DLN-234

2010 Pathfinder

TRANSFER CONTROL UNIT

DLN-249

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

DLN

NOTE:

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

Flashing pattern

Item

Diagnostic item is detected when...

Reference

Output shaft revolution
signal (from TCM)

• Malfunction is detected in output shaft revo-

lution signal that is output from TCM through
CAN communication.

• Improper signal is input while driving.

DLN-209

Vehicle speed signal
(from ABS)

• Malfunction is detected in vehicle speed sig-

nal that is output from ABS actuator and
electric unit (control unit) through CAN com-
munication.

• Improper signal is input while driving.

DLN-210

CAN communication

Malfunction has been detected from CAN
communication.

DLN-197

AD converter

AD converter system of transfer control unit is
malfunctioning.

DLN-207

4LO switch

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

DLN-211

Engine speed signal

• Malfunction is detected in engine speed sig-

nal that is output from ECM through CAN
communication.

• Improper signal is input while driving.

DLN-234

Power supply

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

DLN-204

4WD shift switch

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

DLN-214

Wait detection switch

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

DLN-217

Actuator motor

• Motor does not operate properly due to open

or short circuit in actuator motor.

• Malfunction is detected in the actuator mo-

tor. (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.

DLN-221

Actuator position
switch

• Improper signal from actuator position

switch is input due to open or short circuit.

• Malfunction is detected in the actuator posi-

tion switch.

DLN-228

Transfer control device

• Malfunction is detected in transfer shut off

relay 1 and transfer shut off 2.

• Malfunction occurs in transfer control device

drive circuit.

DLN-231

Transmission range
switch signal

Transmission range switch signal is malfunc-
tion or communication error between the mod-
ules.

DLN-220

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.

DLN-204

Repeats flickering

every 2 to 5 sec.

—

Circuits that the self-diagnosis covers have no
malfunction.

—

No flickering

Transmission range
switch or 4WD shift
switch

Transmission range switch or 4WD shift switch
circuit is shorted or open.

DLN-220

DLN-214

2010 Pathfinder

DLN-250

< SYMPTOM DIAGNOSIS >

[TRANSFER: TX15B]

4WD SYSTEM SYMPTOMS

SYMPTOM DIAGNOSIS

4WD SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000005258412

Symptom

Condition

Reference page

4WD shift indicator lamp and 4LO indicator lamp do not turn ON (lamp check)

Ignition switch: ON

DLN-253

4WD warning lamp does not turn ON (lamp check)

DLN-251

4WD shift indicator lamp or 4LO indicator lamp does not change

Engine running

DLN-255

ATP warning lamp does not turn ON

DLN-257

ATP switch is malfunctioning

DLN-261

4WD shift indicator lamp repeats flashing

While driving

DLN-259

4WD warning lamp flashes slowly (1 time/2 seconds)

DLN-260

2010 Pathfinder

4WD WARNING LAMP DOES NOT TURN ON

DLN-251

< SYMPTOM DIAGNOSIS >

[TRANSFER: TX15B]

DLN

4WD WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000005258413

4WD warning lamp does not turn ON when turning ignition switch to ON.

Diagnosis Procedure

INFOID:0000000005258414

Regarding Wiring Diagram information, refer to

DLN-240, "Wiring Diagram - PART TIME 4WD SYSTEM -"

CHECK TRANSFER CONTROL UNIT POWER SUPPLY AND GROUND CIRCUITS

Refer to

DLN-204, "Diagnosis Procedure"

Are the inspection results normal?

YES

>> GO TO 2.

>> Perform repairs as necessary.

CHECK COMBINATION METER POWER SUPPLY CIRCUIT

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

2. Disconnect combination meter harness connector.

3. Check voltage between combination meter harness connector

terminals and ground.

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

5. Check voltage between combination meter harness connector

terminals and ground.

Are the inspection results normal?

YES

>> GO TO 3.

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

or replace damaged parts.

• 10A fuse [No. 14, located in the fuse block (J/B)] or

ignition switch.

• Harness for short or open between ignition switch and combination meter harness connector

terminal 16

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER

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

Connector

Terminal

Voltage (Approx.)

M24

16 - Ground

WDIA0178E

Connector

Terminal

Voltage (Approx.)

M24

16 - Ground

Battery voltage

WDIA0179E

2010 Pathfinder

DLN-252

< SYMPTOM DIAGNOSIS >

[TRANSFER: TX15B]

4WD WARNING LAMP DOES NOT TURN ON

2. Check continuity between transfer control unit harness connec-

tor M166 terminal 38 and combination meter harness connector

M24 terminal 28.

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

Is there continuity?

YES

>> GO TO 4.

>> Repair or replace damaged parts.

CHECK INDICATOR LAMP CIRCUIT

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

2. Connect combination meter harness connector.

3. Disconnect transfer control unit harness connector.

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

5. Ground the following terminal using suitable wiring.

Transfer control unit harness connector M166 terminal 38 and

ground.

Does the indicator lamp turn on?

YES

>> GO TO 5.

>> Replace the combination meter. Refer to

MWI-96,

"Removal and Installation"

SYMPTOM CHECK

Check again.
Does the symptom still occur?

YES

>> GO TO 6.

>> Inspection End.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-235, "Reference Value"

Are the inspection results normal?

YES

>> Inspection End.

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

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

Continuity should exist.

WDIA0180E

SDIA3452E

2010 Pathfinder

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