Nissan Frontier D40. Manual - part 257

P1818 ACTUATOR POSITION SWITCH

DLN-49

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

2.

Depress brake pedal and stop vehicle.

3.

Set A/T selector lever to "N" position.

4.

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

Are the inspection results normal?

YES 

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH

1.

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

2.

Disconnect transfer control unit harness connector and the transfer control device (actuator position
switch) harness connector.

3.

Check continuity between the following terminals.

-

Transfer control unit harness connector M152 terminal 10 and
transfer control device (actuator position switch) harness con-
nector F58 terminal 26.

-

Transfer control unit harness connector M152 terminal 11 and
transfer control device (actuator position switch) harness con-
nector F58 terminal 20.

-

Transfer control unit harness connector M152 terminal 12 and
transfer control device (actuator position switch) harness con-
nector F58 terminal 21.

-

Transfer control unit harness connector M152 terminal 13 and
transfer control device (actuator position switch) harness con-
nector F58 terminal 25.

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.)

Connector

Terminal

Condition

Voltage 

(Approx.)

M152

10 - 

Ground

4WD shift switch: 2WD and 4LO

0V

4WD shift switch: 4H

Battery 
voltage

11 - 

Ground

4WD shift switch: 4LO

0V

4WD shift switch: 2WD and 4H

Battery 
voltage

12 - 

Ground

4WD shift switch: 2WD and 4H

0V

4WD shift switch: 4LO

Battery 
voltage

13 - 

Ground

4WD shift switch: 4H and 4LO

0V

4WD shift switch: 2WD

Battery 
voltage

SDIA3369E

Continuity should exist.

SDIA3370E

DLN-50

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1818 ACTUATOR POSITION SWITCH

2.

Check continuity between transfer control device (actuator posi-
tion switch) harness connector F58 terminal 22 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 TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-55, "Reference Value"

.

Are the inspection results normal?

YES

>> GO TO 5.

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.

5.

CHECK DTC

Perform the self-diagnosis, after driving a vehicle for a while.

Is DTC P1818 displayed?

YES

>> Replace transfer control device. Refer to 

DLN-99, "Removal and Installation"

.

NO

>> Inspection End.

Continuity should exist.

SDIA2815E

P1819 TRANSFER CONTROL DEVICE

DLN-51

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1819 TRANSFER CONTROL DEVICE

Description

INFOID:0000000005275452

The transfer control device integrates the actuator motor and actuator position switch.  DTC P1819 will set if
either of the following conditions exist:
• Malfunction occurs in transfer control device drive circuit.
• Malfunction is detected in transfer shut off relay 1 and transfer shut off relay 2.

DTC Logic

INFOID:0000000005275453

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON.

2.

Perform self-diagnosis.

Is DTC P1819 detected?

YES

>> Perform diagnosis procedure. Refer to 

DLN-51, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000005275454

Regarding Wiring Diagram information, refer to 

DLN-60, "Wiring Diagram"

.

1.

CHECK POWER SUPPLY 

1.

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

2.

Disconnect transfer control unit harness connector.

3.

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

DTC

CONSULT-III

Diagnostic item is detected when...

Reference

[P1819]

SHIFT ACT CIR

• Malfunction is detected in transfer 

shut off relay 1 and transfer shut off re-
lay 2.

• Malfunction occurs in transfer control 

device drive circuit.

DLN-51

Connector

Terminal

Voltage (Approx.)

M152

25 - Ground

0V

M153

27 - Ground

SDIA3371E

DLN-52

< COMPONENT DIAGNOSIS >

[TRANSFER: TX15B]

P1819 TRANSFER CONTROL DEVICE

4.

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

5.

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

Are the inspection results normal?

YES

>> GO TO 2.

NO

>>

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

• 10A fuse (No. 57, located in the fuse and relay box).
• 40A fuse (No. J, located in the fuse and fusible link box).
• Harness for short or open between battery and transfer shut off relay 1 harness connector E156

terminal 3.

• Harness for short or open between transfer control unit harness connector M153 terminal 27

and transfer shut off relay 1 harness connector E156 terminal 5.

• Harness for short or open between ignition switch and transfer shut off relay 1 harness connec-

tor E156 terminal 1.

• Harness for short or open between transfer shut off relay 1 harness connector E156 terminal 2

and ground.

• Harness for short or open between ignition switch and transfer control unit harness connector

M152 terminal 25.

• Battery and ignition switch.
• Transfer shut off relay 1. Refer to 

DLN-23, "Component Inspection"

.

2.

CHECK GROUND CIRCUIT

1.

Turn ignition switch "OFF".

2.

Disconnect transfer control unit harness connector.

3.

Check continuity between transfer control unit harness connec-
tor M153 terminal 32 and ground.

Also check harness for short to power.

Is there continuity?

YES

>> GO TO 3.

NO

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

nectors.

3.

CHECK POWER SUPPLY SIGNAL

1.

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

2.

Connect transfer control unit harness connector.

3.

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

Connector

Terminal

Voltage (Approx.)

M152

25 - Ground

Battery voltage

M153

27 - Ground

SDIA3372E

Continuity should exist.

SDIA2818E

Connector

Terminal

Voltage (Approx.)

M153

40 - Ground

Battery voltage

SDIA2819E