Nissan Pathfinder (2011 year). Manual — part 190

DLN-58

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1819 TRANSFER CONTROL DEVICE

With CONSULT-III

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

2. Select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-III.

3. Touch “ERASE”.

4. Turn ignition switch “OFF” and wait at least 10 seconds.

5. Perform the self-diagnosis again.
Is the “SHIFT ACT CIR [P1819]” displayed?

YES

>> Replace transfer control unit. Refer to

DLN-140, "Removal and Installation"

.

NO

>> Inspection End.

8.

PERFORM SELF-DIAGNOSIS (WITHOUT CONSULT-III)

Without CONSULT-III

1. Perform the self-diagnosis and then erase self-diagnostic results. Refer to

DLN-23, "CONSULT-III Func-

tion (ALL MODE AWD/4WD)"

.

2. Perform the self-diagnosis again.
Do the self-diagnostic results indicate transfer control device?

YES

>> Replace transfer control unit.

NO

>> Inspection End.

2011 Pathfinder

P1820 ENGINE SPEED SIGNAL

DLN-59

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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P1820 ENGINE SPEED SIGNAL

Description

INFOID:0000000006244967

The ECM transmits the engine speed signal via CAN communication to the transfer control unit. DTC P1820

will set when either of the following occur:

• Malfunction is detected in engine speed signal that is output from the ECM.

• Improper signal is input while driving.

DTC Logic

INFOID:0000000006244968

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1820 detected?

YES

>> Perform diagnosis procedure. Refer to

DLN-59, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244969

1.

CHECK DTC WITH ECM

Perform self-diagnosis with ECM. Refer to

EC-530, "CONSULT-III Function"

.

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

Drive the vehicle and then perform self-diagnosis.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> Perform self-diagnosis with ECM again.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1820]

ENGINE SPEED SIG

• Malfunction is detected in engine

speed signal that is output from ECM
through CAN communication.

• Improper signal is input while driving.

Refer to

DLN-59

.

2011 Pathfinder

DLN-60

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1822 CLUTCH PRESSURE SOLENOID

P1822 CLUTCH PRESSURE SOLENOID

Description

INFOID:0000000006244970

Proper voltage is not applied to the clutch pressure solenoid valve due to open or short circuit.

DTC Logic

INFOID:0000000006244971

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1822 displayed?

YES

>> Perform diagnosis procedure. Refer to

DLN-60, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244972

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

1.

CHECK CLUTCH PRESSURE 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 DUTY SOLENOID.

Without CONSULT-III

1. Start engine.

2. Check voltage between transfer control unit harness connector

terminal and ground.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1822]

DUTY SOLENOID

Proper voltage is not applied to clutch
pressure solenoid valve due to open or
short circuit.

Refer to

DLN-60

.

Condition

Display value

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

4WD shift switch: 2WD

4%

4WD shift switch: AUTO

96 - 4%

4WD shift switch: 4H or
4LO

4%

SDIA2719E

2011 Pathfinder

P1822 CLUTCH PRESSURE SOLENOID

DLN-61

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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Are the inspection results normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND CLUTCH PRESSURE SOLENOID

VALVE

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

2. Disconnect transfer control unit harness connector, transfer terminal cord assembly harness connector

and transfer dropping resistor.

3. Check continuity between transfer control unit harness connec-

tor M152 terminal 19 and transfer terminal cord assembly har-

ness connector F56 terminal 6.

4. Check continuity between transfer dropping resistor harness

connector E135 terminal 2 and transfer terminal cord assembly

harness connector F56 terminal 6.

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

Are the inspection results normal?

YES

>> GO TO 3.

NO

>> Repair or replace damaged parts.

3.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER DROPPING RESISTOR

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

2. Disconnect transfer control unit harness connector and transfer dropping resistor harness connector.

Connector

Terminal

Condition

Voltage

(Approx.)

M152

10 -

Ground

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

N position

• Brake pedal de-

pressed

4WD shift switch:
AUTO

4 - 14V

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

Less than
1V

19 -

Ground

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

N position

• Brake pedal de-

pressed

4WD shift switch:
AUTO

1.5 - 3V

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

Less than
1V

Continuity should exist.

SDIA2720E

Continuity should exist.

SDIA2721E

2011 Pathfinder

DLN-62

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1822 CLUTCH PRESSURE SOLENOID

3. Check continuity between transfer control unit harness connec-

tor M152 terminal 10 and transfer dropping resistor harness

connector E135 terminal 1.

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

Are the inspection results normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK GROUND CIRCUIT

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

2. Disconnect transfer terminal cord assembly harness connector.

3. Check continuity between transfer terminal cord assembly har-

ness connector F56 terminal 19 and ground.

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

Are the inspection results normal?

YES

>> GO TO 5.

NO

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

in harness or connectors.

5.

CHECK CLUTCH PRESSURE SOLENOID

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 har-

ness connector F56 terminals 6 and 19.

Are the inspection results normal?

YES

>> GO TO 6.

NO

>> Replace clutch pressure solenoid. Refer to

DLN-19,

"Component Parts Location"

.

6.

CHECK TRANSFER DROPPING RESISTOR

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

2. Disconnect transfer dropping resistor harness connector.

3. Check resistance between transfer dropping resistor terminals 1

and 2.

Are the inspection results normal?

YES

>> GO TO 7.

NO

>> Replace transfer dropping resistor.

7.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to

DLN-88, "Reference Value"

.

Continuity should exist.

SDIA2722E

Continuity should exist.

SDIA2723E

6 - 19

: Approx. 3.0 - 3.4

Ω

WDIA0225E

1 - 2

: Approx. 11.2 - 12.8

Ω

SDIA2725E

2011 Pathfinder

P1822 CLUTCH PRESSURE SOLENOID

DLN-63

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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Are the inspection results normal?

YES

>> GO TO 8.

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.

8.

CHECK DTC

Drive the vehicle and then perform self-diagnosis.
Are the inspection results normal?

YES

>> Inspection End.

NO

>> Replace transfer control unit. Refer to

DLN-140, "Removal and Installation"

.

Component Inspection

INFOID:0000000006244973

CLUTCH PRESSURE SOLENOID

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 6 and 19.

4. If the inspection results are abnormal replace clutch pressure

solenoid. Refer to

DLN-19, "Component Parts Location"

.

TRANSFER DROPPING RESISTOR

1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer dropping resistor harness connector.
3. Check resistance between transfer dropping resistor terminals 1

and 2.

4. If the inspection results are abnormal replace transfer dropping

resistor. Refer to

DLN-19, "Component Parts Location"

.

6 - 19

: Approx. 3.0 - 3.4

Ω

WDIA0225E

1 - 2

: Approx. 11.2 - 12.8

Ω

SDIA2725E

2011 Pathfinder

DLN-64

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

P1823 2-4 SOLENOID

P1823 2-4 SOLENOID

Description

INFOID:0000000006244974

Proper voltage is not applied to the 2-4WD solenoid valve due to an open or short circuit.

DTC Logic

INFOID:0000000006244975

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1823 displayed?

YES

>> Perform diagnosis procedure. Refer to

DLN-64, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000006244976

Regarding Wiring Diagram information, refer to

DLN-100, "Wiring Diagram"

.

1.

CHECK 4WD SHIFT SWITCH SYSTEM

Perform self-diagnosis. Refer to

DLN-23, "CONSULT-III Function (ALL MODE AWD/4WD)"

.

Is the "4WD MOD SW [P1814]" (with CONSULT-III) or "Flickering pattern:16" (without CONSULT-III)

detected?

YES

>> Perform trouble diagnosis for 4WD shift switch. Refer to

DLN-38, "Diagnosis Procedure"

.

NO

>> GO TO 2

2.

CHECK 2-4WD SHIFT SOLENOID 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 “2-4WD SOL” and “2-4WD SOL MON”.

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1823]

2-4WD SOLENOID

Proper voltage is not applied to 2-4WD
solenoid valve due to open or short cir-
cuit.

Refer to

DLN-64

.

Monitored

item

Condition

Display

value

2-4WD SOL

• Vehicle stopped
• Engine running
• A/T selector lever “N”

position

• Brake pedal de-

pressed

4WD shift switch: 2WD

OFF

4WD shift switch: AUTO

ON

4WD shift switch: 4H

4WD shift switch: 4LO

4WD shift switch: AUTO
(“Wait” function is operating.)

OFF

4WD shift switch: 4H (“Wait”
function is operating.)

OFF

2011 Pathfinder

P1823 2-4 SOLENOID

DLN-65

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: ATX14B]

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Without CONSULT-III

1. Start engine.

2. Check voltage between transfer control unit harness connector

terminal and ground.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 3.

3.

CHECK 4WD SHIFT SWITCH SIGNAL

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

2. Check voltage between transfer control unit harness connector

terminals and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Check 4WD shift switch. Refer to

DLN-40, "Component Inspection"

.

4.

CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER TERMINAL CORD ASSEMBLY

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

2. Disconnect 4WD shift switch harness connector and transfer terminal cord assembly harness connector.

2-4WD SOL
MON

• Vehicle stopped
• Engine running
• A/T selector lever “N”

position

• Brake pedal de-

pressed

4WD shift switch: 2WD

OFF

4WD shift switch: AUTO

ON

4WD shift switch: 4H

4WD shift switch: 4LO

4WD shift switch: AUTO
(“Wait” function is operating.)

OFF

4WD shift switch: 4H (“Wait”
function is operating.)

OFF

Monitored

item

Condition

Display

value

Connector

Terminal

Condition

Voltage

(Approx.)

M152

1 -

Ground

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

“N” position

• Brake pedal de-

pressed

4WD shift switch: 2WD 0V

4WD shift switch: AU-
TO, 4H or 4LO

Battery
voltage

SDIA2728E

Connector

Terminal

Condition

Voltage (Ap-

prox.)

M141

4 - ground

4WD shift switch: AUTO, 4H or 4LO Battery voltage

4WD shift switch: 2WD

0V

SDIA2729E

2011 Pathfinder