Nissan Pathfinder (2008 year). Manual - part 203

 

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Nissan Pathfinder (2008 year). Manual - part 203

 

 

DLN-208

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1810 4 LO SWITCH

P1810 4 LO SWITCH

Description

INFOID:0000000001500025

The 4LO switch detects that the transfer case is in 4LO range.  DTC P1810 will set when an improper signal
from the 4LO switch is input due to an open or short circuit.

DTC Logic

INFOID:0000000001500026

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Perform self-diagnosis.

Is DTC P1810 displayed?

YES

>> Perform diagnosis procedure. Refer to 

DLN-208, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001500027

1.

CHECK 4LO POSITION SWITCH SIGNAL

 With CONSULT-III

1.

Start engine.

2.

Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-III.

3.

Read out the value of “4L POSI SW”.

 Without CONSULT-III

1.

Start engine.

2.

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

Are the inspection results normal?

YES 

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND 4LO SWITCH

1.

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

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1810]

4L POSI SW TF

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

DLN-208

Condition

Display value

• Vehicle stopped
• Engine running
• A/T selector lever “N” position
• Brake pedal depressed

4WD shift switch: 4LO

ON

Except the above

OFF

Connector

Terminal

Condition

Voltage 

(Approx.)

E142

 24 - 

Ground

• Vehicle stopped
• Engine running
• A/T selector lever 

“N” position

• Brake pedal de-

pressed

4WD shift switch: 4LO

0V

Except the above

Battery 
voltage

SDIA3363E

P1810 4 LO SWITCH

DLN-209

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

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2.

Disconnect transfer control unit harness connector and the 4LO switch harness connector.

3.

Check continuity between transfer control unit harness connec-
tor M152 terminal 24 and 4LO switch harness connector F60
terminal 13.

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

Is there continuity?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK GROUND CIRCUIT

1.

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

2.

Disconnect 4LO switch harness connector.

3.

Check continuity between 4LO switch harness connector F60
terminal 12 and ground.

Also check harness for short to power.

Is there continuity?

 YES  >> GO TO 4.
 NO

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

nectors.

4.

CHECK 4LO SWITCH 

1.

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

2.

Disconnect 4LO switch harness connector.

3.

Remove 4LO switch. Refer to 

DLN-193, "Component Parts Location"

.

4.

Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.

Are the inspection results normal?

YES

>> GO TO 5.

NO

>> Replace 4LO switch.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-232, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 6.

NO

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

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

6.

CHECK DTC

Drive the vehicle and then perform self-diagnosis.
Is DTC P1810 displayed?

YES

>> Replace transfer control unit. Refer to 

DLN-270, "Removal and Installation"

.

NO

>> Inspection End.

Continuity should exist.

SDIA3364E

Continuity should exist.

PDIA0203E

Terminal

Condition

Continuity

12 - 13

Push 4LO switch

Yes

Release 4LO switch

No

PDIA0204E

DLN-210

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1810 4 LO SWITCH

Component Inspection

INFOID:0000000001500029

1.

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

2.

Disconnect 4LO switch harness connector.

3.

Remove 4LO switch.  Refer to 

DLN-193, "Component Parts Location"

.

4.

Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.

5.

If the inspection results are not normal replace the 4LO switch.

Terminal

Condition

Continuity

12 - 13

Push 4LO switch

Yes

Release 4LO switch

No

PDIA0204E

P1813 4WD SHIFT SWITCH

DLN-211

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

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P1813 4WD SHIFT SWITCH

Description

INFOID:0000000001500030

The 4WD shift switch allows the driver to select 2WD or 4WD and 4H or 4LO.  DTC P1813 will set if more than
two switch inputs are simultaneously detected by the transfer control unit due to a short circuit in the 4WD shift
switch.

DTC Logic

INFOID:0000000001500031

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Perform self-diagnosis.

Is DTC P1813 displayed?

YES

>> Perform diagnosis procedure. Refer to 

DLN-211, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001500032

1.

CHECK 4WD SHIFT SWITCH SIGNAL

 With CONSULT-III

1.

Turn ignition switch “ON”.

2.

Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-III.

3.

Read out ON/OFF switching action of the “2WD SWITCH”, “4H SWITCH”, “4L SWITCH” with operating
4WD shift switch.

 Without CONSULT-III

1.

Turn ignition switch “ON”.

2.

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

Are the inspection results normal?

YES 

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK 4WD SHIFT SWITCH POWER SUPPLY CIRCUIT

1.

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

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1813]

4WD MODE SW

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

DLN-211

Connector

Terminal

Condition

Voltage (Ap-

prox.)

M152

14 - Ground

4WD shift switch: 2WD

Battery voltage

4WD shift switch: 4H and 4LO

0V

15 - Ground

4WD shift switch: 4H

Battery voltage

4WD shift switch: 2WD and 4LO

0V

 16 - Ground

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD and 4H

0V

SDIA3365E

DLN-212

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1813 4WD SHIFT SWITCH

2.

Disconnect 4WD shift switch harness connector.

3.

Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.

4.

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

5.

Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.

Is there voltage?

YES

>> GO TO 3.

NO

>> 1.

Check harness for short or open between 4WD shift
switch harness connector terminal 1 and transfer
shut off relay 2 harness connector E157 terminal 5
and 10A fuse (No. 61 located in the fuse block).  If any items are damaged, repair or replace
damaged parts.

2.

Perform trouble diagnosis for power supply circuit.  Refer to 

DLN-201, "Diagnosis Procedure"

.

3.

CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER CONTROL UNIT

1.

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

2.

Disconnect transfer control unit harness connector and the 4WD shift switch harness connector.

3.

Check continuity between the following terminals.

-

Transfer control unit harness connector M152 terminal 14 and
4WD shift switch harness connector M141 terminal 3.

-

Transfer control unit harness connector M152 terminal 15 and
4WD shift switch harness connector M141 terminal 5.

-

Transfer control unit harness connector M152 terminal 16 and
4WD shift switch harness connector M141 terminal 6.

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

Is there continuity?

YES 

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK 4WD SHIFT SWITCH

1.

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

2.

Remove 4WD shift switch harness connector.

Connector

Terminal

Voltage (Approx.)

M141

1 - Ground

0V

SDIA2803E

Connector

Terminal

Voltage (Approx.)

M141

1 - Ground

Battery voltage

SDIA2802E

Continuity should exist.

SDIA3366E

P1813 4WD SHIFT SWITCH

DLN-213

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

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3.

Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.

Are the inspection results normal?

YES

>> GO TO 5.

NO

>> Replace 4WD shift switch.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-232, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 6.

NO

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

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

6.

CHECK DTC

Drive the vehicle and then perform self-diagnosis.

Is DTC P1813 displayed?

YES

>> Replace transfer control unit. Refer to 

DLN-270, "Removal and Installation"

.

NO

>> Inspection End.

Component Inspection

INFOID:0000000001500034

1.

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

2.

Remove 4WD shift switch harness connector. 

3.

Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.

4.

If the inspection results are abnormal replace the 4WD shift switch.

Terminal

Condition

Continuity

1 - 3

4WD shift switch: 2WD

Yes

4WD shift switch: 4H and 4LO

No

1 - 5

4WD shift switch: 4H

Yes

4WD shift switch: 2WD and 4LO

No

1 - 6

4WD shift switch: 4LO

Yes

4WD shift switch: 2WD and 4H

No

SDIA2805E

Terminal

Condition

Continuity

1 - 3

4WD shift switch: 2WD

Yes

4WD shift switch: 4H and 4LO

No

1 - 5

4WD shift switch: 4H

Yes

4WD shift switch: 2WD and 4LO

No

1 - 6

4WD shift switch: 4LO

Yes

4WD shift switch: 2WD and 4H

No

SDIA2805E

DLN-214

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1814 WAIT DETECTION SWITCH

P1814 WAIT DETECTION SWITCH

Description

INFOID:0000000001500035

The wait detection switch detects if the transfer case is in 4WD.  DTC P1814 will set if an improper signal from
the wait detection switch is input due to open or short circuit.

DTC Logic

INFOID:0000000001500036

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Perform self-diagnosis.

Is DTC P1814 detected?

YES

>> Perform diagnosis procedure. Refer to 

DLN-214, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000001500037

1.

CHECK WAIT DETECTION SWITCH SIGNAL

 With CONSULT-III

1.

Start engine.

2.

Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-III.

3.

Read out the value of “WAIT DETCT SW”.

 Without CONSULT-III

1.

Start engine.

2.

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

Are the inspection results normal?

YES 

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1814]

4WD DETECT SWITCH

Improper signal from wait detection 
switch is input due to open or short cir-
cuit.

DLN-214

Condition

Display value

• Vehicle stopped
• Engine running
• A/T selector lever “N” position
• Brake pedal depressed

4WD shift switch: 4H and 4LO

ON

4WD shift switch: 2WD

OFF

Connector

Terminal

Condition

Voltage 

(Approx.)

E142

17 - 

Ground

• Vehicle stopped
• Engine running
• A/T selector lever 

“N” position

• Brake pedal de-

pressed

4WD shift switch
: 4H and 4LO

0V

4WD shift switch: 2WD

Battery 
voltage

SDIA3367E

P1814 WAIT DETECTION SWITCH

DLN-215

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

C

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DLN

N

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1.

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

2.

Disconnect transfer control unit harness connector and the wait detection switch harness connector.

3.

Check continuity between transfer control unit harness connec-
tor M152 terminal 17 and wait detection switch harness connec-
tor F59 terminal 10.

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

Is there continuity?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK GROUND CIRCUIT

1.

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

2.

Disconnect wait detection switch harness connector.

3.

Check continuity between wait detection switch harness con-
nector F59 terminal 11 and ground.

Also check harness for short to power.

Is there continuity?

 YES  >> GO TO 4.
 NO

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

nectors.

4.

CHECK WAIT DETECTION SWITCH 

1.

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

2.

Disconnect wait detection switch harness connector.

3.

Remove wait detection switch. Refer to 

DLN-193, "Component Parts Location"

.

4.

Push and release wait detection switch and check continuity
between wait detection switch terminals 10 and 11.

Are the inspection results normal?

YES

>> GO TO 5.

NO

>> Replace wait detection switch.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-232, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 6.

NO

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

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

6.

CHECK DTC

Drive the vehicle and then perform self-diagnosis.

Is DTC P1814 displayed?

YES

>> Replace transfer control unit. Refer to 

DLN-270, "Removal and Installation"

.

NO

>> Inspection End.

Continuity should exist.

SDIA3368E

Continuity should exist.

PDIA0207E

Terminal

Condition

Continuity

10 - 11

Push wait detection switch

Yes

Release wait detection switch

No

PDIA0208E

 

 

 

 

 

 

 

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