Nissan Pathfinder (2011 year). Instruction — part 187

DLN-34

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1808 VEHICLE SPEED SENSOR (ABS)

P1808 VEHICLE SPEED SENSOR (ABS)

Description

INFOID:0000000006244938

The ABS actuator and electric unit (control unit) transmits a vehicle speed signal via CAN communication to

the transfer control unit. DTC P1808 sets when a malfunction is detected in the vehicle speed signal that is

output from the ABS actuator and electric unit (control unit) or an improper signal is input while driving.

DTC Logic

INFOID:0000000006244939

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1808 displayed?

YES

>> Perform diagnosis procedure. Refer to

DLN-34, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244940

1.

CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to

BRC-138, "CONSULT-III

Function (ABS)"

.

Is any malfunction detected by self-diagnosis?

YES

>> Check the malfunctioning system.

NO

>> GO TO 2.

2.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 3.

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.

3.

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> Perform self-diagnosis with ABS actuator and electric unit (control unit) again.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[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.

Refer to

DLN-34

.

2011 Pathfinder

P1810 NEUTRAL-4LO SWITCH

DLN-35

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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DLN

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P1810 NEUTRAL-4LO SWITCH

Description

INFOID:0000000006244941

The neutral-4LO switch detects that the transfer case is in neutral or 4LO range. DTC P1810 will set when an

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

DTC Logic

INFOID:0000000006244942

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-35, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244943

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

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 N POSI SW TF.

Without CONSULT-III

1. Start engine.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1810]

4L POSI SW TF

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

Refer to

DLN-35

.

Condition

Display value

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

4WD shift switch: 2WD,
AUTO or 4H

OFF

4WD shift switch: 4H to
4LO (While actuator mo-
tor is operating.)

OFF

→

ON

4WD shift switch: 4LO to
4H (While actuator motor
is operating.)

ON

→

OFF

4WD shift switch: 4LO

ON

2011 Pathfinder

DLN-36

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1810 NEUTRAL-4LO SWITCH

2. Check voltage between transfer control unit harness connector

terminal and ground.

Are inspection results normal?

YES

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND NEUTRAL-4LO SWITCH

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

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

3. Check continuity between transfer control unit harness connec-

tor M153 terminal 25 and neutral-4LO switch harness connector

F60 terminal 13.

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

Are inspection results normal?

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 neutral-4LO switch harness connector.

3. Check continuity between neutral-4LO switch harness connec-

tor F60 terminal 12 and ground.

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

Are inspection results normal?

YES

>> GO TO 4.

NO

>> Repair open circuit or short to ground or short to power

in harness or connectors.

4.

CHECK 4LO SWITCH

1. Turn ignition switch OFF.

2. Disconnect neutral-4LO switch harness connector.

3. Remove neutral-4LO switch.

Connector

Terminal

(Wire col-

or)

Condition

Voltage

(Approx.)

M153

25 -

Ground

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

N position

• Brake pedal de-

pressed

4WD shift switch:
2WD, AUTO or 4H

Battery
voltage

4WD shift switch: 4H to
4LO (While actuator
motor is operating.)

Battery
voltage

→

0V

4WD shift switch: 4LO
to 4H (While actuator
motor is operating.)

0V

→

Battery
voltage

4WD shift switch: 4LO

0V

SDIA2693E

Continuity should exist.

SDIA2694E

Continuity should exist.

SDIA2695E

2011 Pathfinder

P1810 NEUTRAL-4LO SWITCH

DLN-37

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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4. Push and release neutral-4LO switch and check continuity

between neutral-4LO switch terminals 12 and 13.

Are inspection results normal?

YES

>> GO TO 5.

NO

>> Replace neutral-4LO switch. Refer to

DLN-19, "Compo-

nent Parts Location"

.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

Are 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.
Are inspection results normal?

YES

>> Inspection End.

NO

>> Replace transfer control unit. Refer to

DLN-140, "Removal and Installation"

.

Component Inspection

INFOID:0000000006244944

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect neutral-4LO switch harness connector.
3. Remove neutral-4LO switch. Refer to

DLN-19, "Component Parts Location"

.

4. Push and release neutral-4LO switch and check continuity

between neutral-4LO switch terminals 12 and 13.

5. If the inspection results are abnormal replace the neutral-4LO

switch.

Terminal

Condition

Continuity

12 - 13

Push neutral-4LO switch

Yes

Release neutral-4LO switch

No

SDIA2696E

Terminal

Condition

Continuity

12 - 13

Push neutral-4LO switch

Yes

Release neutral-4LO switch

No

SDIA2696E

2011 Pathfinder

DLN-38

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1813 4WD SHIFT SWITCH

P1813 4WD SHIFT SWITCH

Description

INFOID:0000000006244945

The 4WD shift switch allows the driver to select AUTO, 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:0000000006244946

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-38, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244947

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

1.

CHECK 4WD SHIFT SWITCH SIGNAL

With CONSULT-III

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

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

3. Read out ON/OFF switching action of the “2WD SWITCH”, “AUTO SWITCH”, “LOCK SWITCH” and “4L

SWITCH” while operating 4WD shift switch.

Without CONSULT-III

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

2. Check voltage between transfer control unit harness connector

terminals and ground.

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.

Refer to

DLN-38

.

Connector

Terminal

Condition

Voltage (Ap-

prox.)

M152

9 - ground

4WD shift switch: 2WD

Battery voltage

4WD shift switch: AUTO, 4H or 4LO 0V

18 - ground

4WD shift switch: 4H

Battery voltage

4WD shift switch: 2WD, AUTO or
4LO

0V

23 - ground

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD, AUTO or 4H 0V

24 - ground

4WD shift switch: AUTO

Battery voltage

4WD shift switch: 2WD, 4H or 4LO

0V

WDIA0167E

2011 Pathfinder

P1813 4WD SHIFT SWITCH

DLN-39

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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OK or NG

OK

>> GO TO 5.

NG

>> GO TO 2.

2.

CHECK 4WD SHIFT SWITCH POWER SUPPLY CIRCUIT

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

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.

OK or NG

OK

>> GO TO 3.

NG

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

or replace damaged parts.

• Harness for short or open between transfer shut off

relay harness connector E155 terminal 5.

• Power supply circuit for transfer control unit. Refer to

DLN-28, "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 9 and

4WD shift switch harness connector M141 terminal 2.

-

Transfer control unit harness connector M152 terminal 18 and

4WD shift switch harness connector M141 terminal 5.

-

Transfer control unit harness connector M152 terminal 23 and

4WD shift switch harness connector M141 terminal 6.

-

Transfer control unit harness connector M152 terminal 24 and

4WD shift switch harness connector M141 terminal 3.

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

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4.

CHECK 4WD SHIFT SWITCH

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

2. Disconnect 4WD shift switch harness connector.

Connector Terminal

Voltage

(Approx.)

M141

1 - Ground

0V

WDIA0183E

Connector

Terminal

Voltage (Approx.)

M141

1 - Ground

Battery voltage

WDIA0184E

Continuity should exist.

WDIA0185E

2011 Pathfinder

DLN-40

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1813 4WD SHIFT SWITCH

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

shift switch terminals.

OK or NG

OK

>> GO TO 5.

NG

>> Replace 4WD shift switch.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

OK or NG

OK

>> GO TO 6.

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.

6.

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

DLN-140, "Removal and Installation"

.

Component Inspection

INFOID:0000000006244948

4WD SHIFT SWITCH

1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect 4WD shift switch harness connector.
3. Operate 4WD shift switch and check continuity between 4WD

shift switch terminals.

Connector

Terminal

Condition

Continuity

M141

1 - 2

4WD shift switch: 2WD

Yes

4WD shift switch: AUTO, 4H and
4LO

No

1 - 3

4WD shift switch: AUTO

Yes

4WD shift switch: 2WD, 4H and
4LO

No

1 - 4

4WD shift switch: 2WD

No

4WD shift switch: AUTO, 4H and
4LO

Yes

1 - 5

4WD shift switch: 4H

Yes

4WD shift switch: 2WD, AUTO,
and 4LO

No

1 - 6

4WD shift switch: 4LO

Yes

4WD shift switch: 2WD, AUTO and
4H

No

WDIA0168E

WDIA0168E

2011 Pathfinder

P1813 4WD SHIFT SWITCH

DLN-41

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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4. If NG, replace the 4WD shift switch.

Connector

Terminal

Condition

Continuity

M141

1 - 2

4WD shift switch: 2WD

Yes

4WD shift switch: AUTO, 4H and
4LO

No

1 - 3

4WD shift switch: AUTO

Yes

4WD shift switch: 2WD, 4H and
4LO

No

1 - 4

4WD shift switch: 2WD

No

4WD shift switch: AUTO, 4H and
4LO

Yes

1 - 5

4WD shift switch: 4H

Yes

4WD shift switch: 2WD, AUTO,
and 4LO

No

1 - 6

4WD shift switch: 4LO

Yes

4WD shift switch: 2WD, AUTO and
4H

No

2011 Pathfinder