Nissan Frontier D40. Manual - part 253

P1813 4WD SHIFT SWITCH

DLN-33

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

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-55, "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-94, "Removal and Installation"

.

NO

>> Inspection End.

Component Inspection

INFOID:0000000005275433

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-34

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1814 WAIT DETECTION SWITCH

P1814 WAIT DETECTION SWITCH

Description

INFOID:0000000005275434

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:0000000005275435

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-34, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005275436

Regarding Wiring Diagram information, refer to 

DLN-60, "Wiring Diagram"

.

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?

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-34

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.)

M152

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-35

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

YES 

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH

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-13, "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-55, "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?

Continuity should exist.

SDIA3368E

Continuity should exist.

PDIA0207E

Terminal

Condition

Continuity

10 - 11

Push wait detection switch

Yes

Release wait detection switch

No

PDIA0208E

DLN-36

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1814 WAIT DETECTION SWITCH

YES

>> Replace transfer control unit. Refer to 

DLN-94, "Removal and Installation"

.

NO

>> Inspection End.

Component Inspection

INFOID:0000000005275437

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-13, "Component Parts Location"

.

4.

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

5.

If the inspection results are abnormal replace the wait detection
switch.

Terminal

Condition

Continuity

10 - 11

Push wait detection switch

Yes

Release wait detection switch

No

PDIA0208E