Nissan Frontier. Manual - part 284

DLN-38

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: TX15B]

P1816 PNP SWITCH (M/T)

P1816 PNP SWITCH (M/T)

Description

INFOID:0000000009479662

The M/T PNP switch signals neutral position to the transfer control unit. DTC P1816 will set when the M/T

PNP switch signal is malfunctioning.

DTC Logic

INFOID:0000000009479663

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1816 displayed?

YES

>> Perform diagnosis procedure. Refer to 

DLN-38, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009479664

Regarding Wiring Diagram information, refer to 

DLN-63, "Wiring Diagram"

.

1.

CHECK PARK/NEUTRAL POSITION SWITCH SIGNAL

1. Turn ignition switch ON.

2. Check voltage between transfer control unit harness connector

M153 terminal 33 and ground.

Is the inspection result normal?

YES 

>> GO TO 5.

NO

>> GO TO 2.

2.

CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND PARK/NEUTRAL POSITION SWITCH

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

2. Disconnect transfer control unit harness connector and the park/neutral position switch harness connec-

tor.

DTC

CONSULT

Diagnostic item is detected when...

Reference

[P1816]

PNP SW/CIRC

When M/T PNP switch signal is malfunc-
tion.

DLN-38

Connector

Terminal

Condition

Voltage 

(Approx.)

M153

33 - 

Ground

Ignition switch: ON

M/T shift lever neutral 
position

0V

Except the above

Battery 
voltage

WDIA0245E

P1816 PNP SWITCH (M/T)

DLN-39

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3. Check continuity between transfer control unit harness connec-

tor M153 terminal 33 and park/neutral position switch harness

connector F66 terminal 1.

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

Is the inspection result 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 park/neutral position switch harness connector.

3. Check continuity between park/neutral position switch harness

connector F66 terminal 2 and ground.

Also check harness for short to power.

Is the inspection result normal?

YES 

>> GO TO 4.

NO

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

nectors.

4.

CHECK PARK/NEUTRAL POSITION SWITCH

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

2. Remove park/neutral position switch. Refer to 

DLN-13, "Component Parts Location"

.

3. Push and release park/neutral position switch and check conti-

nuity between park/neutral position switch terminals 1 and 2.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace park/neutral position switch. Refer to 

DLN-13,

"Component Parts Location"

.

5.

CHECK TRANSFER CONTROL UNIT

Check transfer control unit input/output signal. Refer to 

DLN-56, "Reference Value"

.

Is the inspection result normal?

YES

>> Inspection End.

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.

Component Inspection

INFOID:0000000009479665

1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect neutral position switch harness connector.
3. Remove neutral position switch. Refer to 

DLN-13, "Component Parts Location"

.

Continuity should exist.

WDIA0246E

Continuity should exist.

WDIA0247E

Terminal

Condition

Continuity

1 - 2

Push park/neutral position switch

Yes

Release park/neutral position 
switch

No

WDIA0273E

DLN-40

< DTC/CIRCUIT DIAGNOSIS >

[TRANSFER: TX15B]

P1816 PNP SWITCH (M/T)

4. Push and release neutral position switch and check continuity

between neutral position switch terminals 1 and 2.

5. If NG, replace the neutral position switch.

Terminal

Condition

Continuity

1 - 2

Push neutral position switch

Yes

Release neutral position switch

No

WDIA0273E

P1817 ACTUATOR MOTOR

DLN-41

< DTC/CIRCUIT DIAGNOSIS >

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P1817 ACTUATOR MOTOR

Description

INFOID:0000000009479666

The actuator motor receives signals from the transfer control unit and controls shift rods which shift the trans-

fer case. DTC P1817 will set when any of the following occur:

• Motor does not operate properly due to open or short circuit in actuator motor.

• Malfunction is detected in the actuator motor. (When 4WD shift switch is operated and actuator motor does

not operate)

• Malfunction is detected in transfer shift high relay or transfer shift low relay.

DTC Logic

INFOID:0000000009479667

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON.

2. Perform self-diagnosis.
Is DTC P1817 detected?

YES

>> Perform diagnosis procedure. Refer to 

DLN-41, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009479668

Regarding Wiring Diagram information, refer to 

DLN-63, "Wiring Diagram"

.

1.

CHECK ACTUATOR MOTOR SIGNAL

With CONSULT

1. Start engine.

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

3. Read out the value of “SHIFT ACT1”, “SHIFT AC MON1”, “SHIFT ACT2”, “SHIFT AC MON2”.

DTC

CONSULT

Diagnostic item is detected when...

Reference

[P1817]

SHIFT ACTUATOR

• Motor does not operate properly due 

to open or short circuit in actuator mo-
tor.

• Malfunction is detected in the actuator 

motor. (When 4WD shift switch is op-
erated and actuator motor is not oper-
ated)

• Malfunction is detected in transfer shift 

high relay or transfer shift low relay.

DLN-41