Nissan Frontier D40. Manual - part 314

P1835 CONTROL UNIT 2

DLN-277

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

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K

L

M

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DLN

N

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P

P1835 CONTROL UNIT 2

Description

INFOID:0000000005275595

Replace the differential lock control unit if this DTC is displayed. Refer to 

DLN-310, "Removal and Installation"

.

DTC Logic

INFOID:0000000005275596

DTC

Display contents of CONSULT-III

DTC Detection Condition

Action to take

P1835

CONTROL UNIT 2
[P1835]

A malfunction is detected in the memory (ROM) of the dif-
ferential lock control unit. 

Replace differential lock 
control unit. Refer to 

DLN-

310, "Removal and Installa-
tion"

.

DLN-278

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

P1836 CONTROL UNIT 3

P1836 CONTROL UNIT 3

Description

INFOID:0000000005275597

Replace the differential lock control unit if this DTC is displayed. Refer to 

DLN-310, "Removal and Installation"

.

DTC Logic

INFOID:0000000005275598

DTC

Display contents of CONSULT-III

DTC Detection Condition

Action to take

P1836

CONTROL UNIT 3
[P1836]

A malfunction is detected in the memory (EEPROM) of 
the differential lock control unit. 

Replace differential lock 
control unit. Refer to 

DLN-

310, "Removal and Installa-
tion"

.

P1837 CONTROL UNIT 4

DLN-279

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1837 CONTROL UNIT 4

Description

INFOID:0000000005275599

Replace the differential lock control unit if this DTC is displayed. Refer to 

DLN-310, "Removal and Installation"

.

DTC Logic

INFOID:0000000005275600

DTC

Display contents of CONSULT-III

DTC Detection Condition

Action to take

P1837

CONTROL UNIT 4
[P1837]

The AD converter system of the differential lock control 
unit is malfunctioning. 

Replace differential lock 
control unit. Refer to 

DLN-

310, "Removal and Installa-
tion"

.

DLN-280

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

P1838 ON SWITCH

P1838 ON SWITCH

Description

INFOID:0000000005275601

The differential lock mode switch sends differential lock ON/OFF request signals to the differential lock control
unit.

DTC Logic

INFOID:0000000005275602

Diagnosis Procedure

INFOID:0000000005275603

Regarding Wiring Diagram information, refer to 

DLN-296, "Wiring Diagram"

.

1.

CHECK DIFFERENTIAL LOCK MODE SWITCH OPERATION

1.

Turn ignition switch ON.

2.

Using CONSULT-III, select “D-LOCK SW SIG” of DIFF LOCK data monitor items.

3.

While operating the differential lock mode switch, check that the display value changes between ON/OFF.

Is the inspection result normal?

YES

>> Differential lock mode switch is operating properly.

NO

>> GO TO 2.

2.

CHECK DIFFERENTIAL LOCK MODE SWITCH POWER SUPPLY CIRCUIT

1.

Disconnect differential lock mode switch harness connector.

2.

Turn ignition switch ON.

3.

Check voltage between differential lock mode switch harness
connector M149 terminal 3 and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK DIFFERENTIAL LOCK MODE SWITCH SIGNAL

DTC

Display contents of CONSULT-III

DTC Detection Condition

Action to take

P1838

ON SW
[P1838]

Two switch inputs were simultaneously detected due to a 
short circuit in the differential lock mode switch. 

Inspect the differential lock 
mode switch. Refer to 

DLN-

280, "Diagnosis Procedure"

.

Switch ON

Display item ON

Switch OFF

Display item OFF

(+)

(-)

Voltage (Approx.)

Connector

Terminal

M149

 3

 Ground

Battery voltage

SDIA2534E