Nissan Frontier. Manual - part 346

DLN-286

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

P1847 SOLENOID CIRCUIT

P1847 SOLENOID CIRCUIT

Description

INFOID:0000000009479842

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

DLN-311, "Removal and Installation"

.

DTC Logic

INFOID:0000000009479843

DTC

Display contents of CONSULT

DTC Detection Condition

Action to take

P1847

SOL CIRCUIT
[P1847]

A malfunction is detected in the differential lock control 
unit internal circuit. 

Replace differential lock 
control unit. Refer to 

DLN-

311, "Removal and Installa-
tion"

.

P1848 SOLENOID DISCONNECT

DLN-287

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1848 SOLENOID DISCONNECT

Description

INFOID:0000000009479844

When power and ground is supplied from the differential lock control unit, the differential lock solenoid will

actuate to move the pressure plate against the cam ring to lock the differential. By reversing polarity at the dif-

ferential lock control unit, the differential lock solenoid moves the pressure plate away from the cam ring to

unlock the differential. 

DTC Logic

INFOID:0000000009479845

Diagnosis Procedure

INFOID:0000000009479846

Regarding Wiring Diagram information, refer to 

DLN-298, "Wiring Diagram"

.

1.

CHECK DIFFERENTIAL SOLENOID CONTROL

1. Start engine.

2. Using CONSULT, select “RELAY ON”, “RELAY MTR”, “SOL MTR” of DIFF LOCK data monitor.

3. Observe the display values while operating the differential lock system.

Is the inspection result normal?

YES

 >> Differential lock solenoid control system is operating normally.

NO

>> GO TO 2.

2.

CHECK DIFFERENTIAL LOCK SOLENOID RESISTANCE

1. Turn ignition switch OFF.

2. Disconnect differential lock solenoid harness connector C117.

3. Check resistance between differential lock solenoid terminals 2 and 4.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace differential solenoid.

3.

CHECK DIFFERENTIAL LOCK SOLENOID OPERATION

Check operation by applying power and ground to the differential lock solenoid terminals.

DTC

Display contents of CONSULT

DTC Detection Condition

Action to take

P1848

SOL DISCONNECT
[P1848]

An open was detected in the differential lock solenoid or 
circuit.

Inspect differential lock sole-
noid. Refer to 

DLN-287, "Di-

agnosis Procedure"

.

Monitor item

Condition

Differential lock mode switch

Display value

RELAY ON

• Vehicle stopped
• Engine running
• VDC OFF switch: ON
• 4WD shift switch: 4LO

ON

ON

OFF

OFF

RELAY MTR

ON

ON

OFF

OFF

SOL MTR

ON

ON

OFF

OFF

2 - 4

: Approx. 3.4

Ω

DLN-288

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

P1848 SOLENOID DISCONNECT

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check for a mechanical malfunction with the differential lock system. Replace differential sole-

noid.

4.

CHECK DIFFERENTIAL LOCK SOLENOID CIRCUIT

1. Disconnect differential lock control unit harness connector.

2. Check continuity between differential lock control unit harness

connector M70 (A) terminals 11, 12 and differential lock solenoid

harness connector C117 (B) terminals 4, 2.

3. Check continuity between differential lock control unit harness

connector M70 (A) terminals 11, 12 and ground.

Is the inspection result normal?

 YES

>> Replace the differential lock control unit. Refer to 

DLN-311, "Removal and Installation"

.

 NG

>> Repair harness or connector.

Component

(+)

(-)

Solenoid operation

Terminal

Terminal

Differential lock 

solenoid

4

2

Yes

A

B

Continuity

Connector

Terminal

Connector

Terminal

M70

11

C117

4

Yes

12

2

A

—

Continuity

Connector

Terminal

M70

11

Ground

No

12

AWDIA0311ZZ

P1849 SOLENOID SHORT

DLN-289

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

P1849 SOLENOID SHORT

Description

INFOID:0000000009479847

When power and ground is supplied from the differential lock control unit, the differential lock solenoid will

actuate to move the pressure plate against the cam ring to lock the differential. By reversing polarity at the dif-

ferential lock control unit, the differential lock solenoid moves the pressure plate away from the cam ring to

unlock the differential. 

DTC Logic

INFOID:0000000009479848

Diagnosis Procedure

INFOID:0000000009479849

Regarding Wiring Diagram information, refer to 

DLN-298, "Wiring Diagram"

.

1.

CHECK DIFFERENTIAL SOLENOID CONTROL

1. Start engine.

2. Using CONSULT, select “RELAY ON”, “RELAY MTR”, “SOL MTR” of DIFF LOCK data monitor.

3. Observe the display values while operating the differential lock system.

Is the inspection result normal?

YES

 >> Differential lock solenoid control system is operating normally.

NO

>> GO TO 2.

2.

CHECK DIFFERENTIAL LOCK SOLENOID RESISTANCE

1. Turn ignition switch OFF.

2. Disconnect differential lock solenoid harness connector C117.

3. Check resistance between differential lock solenoid terminals 2 and 4.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace differential solenoid.

3.

CHECK DIFFERENTIAL LOCK SOLENOID OPERATION

Check operation by applying power and ground to the differential lock solenoid terminals.

DTC

Display contents of CONSULT

DTC Detection Condition

Action to take

P1849

SOL SHORT
[P1849]

A short was detected in the differential lock solenoid inter-
nal circuit or in the harness. 

Inspect the differential lock 
solenoid. Refer to 

DLN-289, 

"Diagnosis Procedure"

.

Monitor item

Condition

Differential lock mode switch

Display value

RELAY ON

• Vehicle stopped
• Engine running
• VDC OFF switch: ON
• 4WD shift switch: 4LO

ON

ON

OFF

OFF

RELAY MTR

ON

ON

OFF

OFF

SOL MTR

ON

ON

OFF

OFF

2 - 4

: Approx. 3.4

Ω