Nissan Pathfinder (2005 year). Instruction — part 435

TROUBLE DIAGNOSIS FOR SYSTEM

TF-99

[ATX14B]

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TF

2005 Pathfinder

DIAGNOSTIC PROCEDURE

1.

CHECK TRANSFER MOTOR RELAY 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 “MOTOR RELAY” and “MOTOR RELAY
MON”.

Without CONSULT-II

1.

Start engine.

Monitored

item

Condition

Display value

(Approx.)

MOTOR
RELAY

●

Accelerator
pedal depressed

●

Vehicle stopped

●

Engine running

●

Brake pedal
depressed

4WD shift switch: 2WD

OFF

4WD shift switch: AUTO or
4LO (A/T selector lever “P” or
“N” position)

OFF
("ON" for
approx. 2 sec.
after shifting to
“P” and “N”.)

4WD shift switch: AUTO or
4LO (Except for A/T selector
lever “P” or “N” position)

ON

4WD shift switch: 4H (A/T
selector lever “P” position)

OFF
("ON" for
approx. 2 sec.
after shifting to
“P”.)

4WD shift switch: 4H (Except
for A/T selector lever “P” posi-
tion)

ON

MOTOR
RELAY
MON

●

Accelerator
pedal depressed

●

Vehicle stopped

●

Engine running

●

Brake pedal
depressed

4WD shift switch: 2WD

OFF

4WD shift switch: AUTO or
4LO (A/T selector lever “P” or
“N” position)

OFF
("ON" for
approx. 2 sec.
after shifting to
“P” and “N”.)

4WD shift switch: AUTO or
4LO (Except for A/T selector
lever “P” or “N” position)

ON

4WD shift switch: 4H (A/T
selector lever “P” position)

OFF
("ON" for
approx. 2 sec.
after shifting to
“P”.)

4WD shift switch: 4H (Except
for A/T selector lever “P” posi-
tion)

ON

SDIA2734E

TF-100

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2005 Pathfinder

2.

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

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 2.

Connector

Terminal

(Wire

color)

Condition

Voltage (Approx.)

M152

14 -

Ground

●

Throttle
valve
closed

●

Vehicle
stopped

●

Engine
running

●

Brake
pedal
depressed

4WD shift switch:
2WD

Battery voltage

4WD shift switch:
AUTO or 4LO (A/T
selector lever “P” or
“N” position)

Battery voltage
(0V for approx. 2
sec. after shifting
to “P” and “N”.)

4WD shift switch:
AUTO or 4LO
(Except for A/T
selector lever “P” or
“N” position)

0V

4WD shift switch:
4H (A/T selector
lever “P” position)

Battery voltage
(0V for approx. 2
sec. after shifting
to “P”.)

4WD shift switch:
4H (Except for A/T
selector lever “P”
position)

0V

M153

41 -

Ground

●

Throttle
valve
closed

●

Vehicle
stopped

●

Engine
running

●

Brake
pedal
depressed

4WD shift switch:
2WD

0V

4WD shift switch:
AUTO or 4LO (A/T
selector lever “P” or
“N” position)

0V
(Battery voltage
for approx. 2 sec.
after shifting to
“P” and “N”.)

4WD shift switch:
AUTO or 4LO
(Except for A/T
selector lever “P” or
“N” position)

Battery voltage

4WD shift switch:
4H (A/T selector
lever “P” position)

0V
(Battery voltage
for approx. 2 sec.
after shifting to
“P”.)

4WD shift switch:
4H (Except for A/T
selector lever “P”
position)

Battery voltage

SDIA2735E

TROUBLE DIAGNOSIS FOR SYSTEM

TF-101

[ATX14B]

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TF

2005 Pathfinder

2.

CHECK TRANSFER MOTOR RELAY POWER SUPPLY CIRCUIT

1.

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

2.

Connect transfer control unit harness connector.

3.

Disconnect transfer motor relay.

4.

Check voltage between transfer motor relay harness connector
terminals and ground.

5.

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

6.

Check voltage between transfer motor relay harness connector
terminals and ground.

OK or NG

OK

>> GO TO 3.

NG

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

replace damaged parts.

●

20A fuse [No. 57, located in the fuse and relay box]. Refer to

PG-4, "POWER SUPPLY ROUT-

ING CIRCUIT"

.

●

10A fuse [No. 59, located in the fuse and relay box]. Refer to

PG-4, "POWER SUPPLY ROUT-

ING CIRCUIT"

.

●

Harness for short or open between battery and transfer motor relay harness connector E154
terminals 5.

●

Harness for short or open between transfer shut off relay harness connector E155 terminal 5
and transfer motor relay harness connector E153 terminal 2.

●

Battery and ignition switch. Refer to

PG-4, "POWER SUPPLY ROUTING CIRCUIT"

.

3.

CHECK TRANSFER MOTOR RELAY

1.

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

2.

Remove transfer motor relay. Refer to

TF-24, "Location of Electrical Parts"

.

3.

Apply 12V direct current between transfer motor relay terminals
1 and 2.

4.

Check continuity between relay terminals 3 and 5.

OK or NG

OK

>> GO TO 4.

NG

>> Replace the transfer motor relay. Refer to

TF-24, "Loca-

tion of Electrical Parts"

.

Connector

Terminal (Wire color)

Voltage (Approx.)

E153

2 - Ground

0V

E154

5 - Ground

Battery voltage

WDIA0169E

Connector

Terminal (Wire color)

Voltage (Approx.)

E153

2 - Ground

Battery voltage

E154

5 - Ground

Battery voltage

WDIA0170E

Condition

Continuity

12V direct current supply between terminals 1 and 2

Yes

OFF

No

LDIA0098E

TF-102

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2005 Pathfinder

4.

CHECK TRANSFER MOTOR CONTROL CIRCUIT

1.

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

2.

Remove transfer motor relay. Refer to

TF-24, "Location of Electrical Parts"

.

3.

Disconnect transfer control unit harness connector and transfer motor relay connector.

4.

Check continuity between the following terminals.

–

Transfer control unit harness connector M152 terminal 14 and transfer motor relay harness connector
E153 terminal 1.

–

Transfer control unit harness connector M153 terminal 41 and transfer motor relay harness connector
E154 terminal 3.

–

Transfer control unit harness connector M153 terminal 41 and transfer motor harness connector F57 ter-
minal 14.

5.

Check continuity between transfer control unit harness connec-
tor M152 terminal 14 and transfer motor relay harness connec-
tor E153 terminal 1.

6.

Check continuity between transfer control unit harness connec-
tor M153 terminal 41, transfer motor relay harness connector
E154 terminal 3 and transfer motor harness connector F57 ter-
minal 14.

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

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

5.

CHECK TRANSFER MOTOR GROUND CIRCUIT

1.

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

2.

Disconnect transfer motor harness connector.

3.

Check continuity between transfer motor harness connector F57
terminal 15 and ground.

Also check harness for short to power.

OK or NG

OK

>> GO TO 6.

NG

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

nectors.

SDIA2738E

Continuity should exist.

WDIA0143E

Continuity should exist.

SDIA2740E

TROUBLE DIAGNOSIS FOR SYSTEM

TF-103

[ATX14B]

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TF

2005 Pathfinder

6.

CHECK TRANSFER MOTOR

1.

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

2.

Disconnect transfer motor harness connector.

3.

Apply 12V direct current between transfer motor terminals 14
and 15.

Does transfer motor operate?

YES

>> GO TO 7.

NO

>> Replace transfer motor. Refer to

TF-142, "Removal and

Installation"

.

7.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

TF-38, "Transfer Control Unit Input/Output Signal Ref-

erence Values"

.

OK or NG

OK

>> GO TO 8.

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.

8.

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-134, "Removal and Installation"

.

LDIA0097E

TF-104

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2005 Pathfinder

COMPONENT INSPECTION
Transfer Motor Relay

1.

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

2.

Remove transfer motor relay. Refer to

TF-24, "Location of Electrical Parts"

.

3.

Apply 12V direct current between transfer motor relay terminals
1 and 2.

4.

Check continuity between relay terminals 3 and 5.

5.

If NG, replace transfer motor relay. Refer to

TF-24, "Location of

Electrical Parts"

.

Transfer Motor

1.

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

2.

Remove transfer motor. Refer to

TF-142, "Removal and Installation"

.

3.

Apply 12V direct current between transfer motor terminals 14
and 15.

4.

If transfer motor does not operate, replace transfer motor. Refer
to

TF-142, "Removal and Installation"

.

Transfer Fluid Temperature

EDS001JP

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.

Condition

Continuity

12V direct current supply between terminals 1 and 2

Yes

OFF

No

LDIA0098E

LDIA0097E

Monitored item [Unit]

Content

Condition

Display value

(Approx.)

FLUID TEMP SE [V]

Condition of transfer fluid
temperature

Transfer fluid temperature approx. 20 - 80

°

C (68 -

176

°

F)

1.1 - 0.3V

Terminal

Wire

color

Item

Condition

Data (Approx.)

28

P

Sensor ground

Always

0V

31

G

Transfer fluid temperature
sensor

Ignition switch: ON

Transfer fluid temperature approx. 20

°

C

(68

°

F)

1.1V

Transfer fluid temperature approx. 80

°

C

(176

°

F)

0.3V

TROUBLE DIAGNOSIS FOR SYSTEM

TF-105

[ATX14B]

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2005 Pathfinder

DIAGNOSTIC PROCEDURE

1.

CHECK TRANSFER FLUID TEMPERATURE SENSOR 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 “FLUID TEMP SE”.

Without CONSULT-II

1.

Start engine.

2.

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

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER TERMINAL CORD

ASSEMBLY

1.

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

2.

Disconnect transfer control unit harness connector and transfer terminal cord assembly harness connec-
tor.

3.

Check continuity between the following terminals.

–

Transfer control unit harness connector M153 terminal 28 and
transfer terminal cord assembly harness connector F56 terminal
3.

–

Transfer control unit harness connector M153 terminal 3 and
transfer terminal cord assembly harness connector F56 terminal
2.

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

(Approx.)

Transfer fluid temperature approx. 20 - 80

°

C (68 - 176

°

F)

1.1 - 0.3V

SDIA2741E

Connector

Terminal

(Wire

color)

Condition

Data

(Approx.)

M153

28 -

Ground

Always

0V

31 -

Ground

Ignition switch:
ON

Transfer fluid temperature
approx. 20

°

C (68

°

F)

1.1V

Transfer fluid temperature
approx. 80

°

C (176

°

F)

0.3V

SDIA2742E

Continuity should exist.

SDIA2743E

TF-106

[ATX14B]

TROUBLE DIAGNOSIS FOR SYSTEM

2005 Pathfinder

3.

CHECK TRANSFER FLUID TEMPERATURE SENSOR

1.

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

2.

Disconnect transfer terminal cord assembly harness connector.

3.

Check resistance between transfer terminal cord assembly ter-
minals 2 and 3.

OK or NG

OK

>> GO TO 4.

NG

>> Replace transfer fluid temperature sensor. Refer to

TF-

146, "Disassembly and Assembly"

.

4.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

TF-38, "Transfer Control Unit Input/Output Signal Ref-

erence Values"

.

OK or NG

OK

>> GO TO 5.

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.

5.

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-134, "Removal and Installation"

.

COMPONENT INSPECTION

1.

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

2.

Disconnect transfer terminal cord assembly harness connector.

3.

Check resistance between transfer terminal cord assembly ter-
minals 2 and 3.

4.

If NG, replace the transfer fluid temperature sensor. Refer to

TF-

24, "Location of Electrical Parts"

.

Temperature

°

C (

°

F)

Resistance (Approx.)

20 (68)

2.5 k

Ω

80 (176)

0.3 k

Ω

WDIA0188E

Temperature

°

C (

°

F)

Resistance (Approx.)

20 (68)

2.5 k

Ω

80 (176)

0.3 k

Ω

WDIA0188E