Nissan Frontier D40. Manual - part 317

P1849 SOLENOID SHORT

DLN-289

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check for a mechanical malfunction with the differential

lock system. Replace differential solenoid.

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-310, "Removal and Installation"

.

 NG

>> Repair harness or connector.

Component

(+)

(-)

Solenoid operation

Terminal

Terminal

Differential lock 

solenoid

4

2

Yes

AWDIA0310ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

M70

11

C117

4

Yes

12

2

A

—

Continuity

Connector

Terminal

M70

11

Ground

No

12

AWDIA0311ZZ

DLN-290

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

P1850 SOLENOID CURRENT

P1850 SOLENOID CURRENT

Description

INFOID:0000000005275618

The differential lock control unit supplies power and ground to the differential lock solenoid via the differential
lock solenoid relay (integral to the differential lock control unit). 

DTC Logic

INFOID:0000000005275619

Diagnosis Procedure

INFOID:0000000005275620

Regarding Wiring Diagram information, refer to 

DLN-296, "Wiring Diagram"

.

1.

CHECK DIFFERENTIAL SOLENOID CONTROL

1.

Start engine.

2.

Using CONSULT-III, 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

DTC

Display contents of CONSULT-III

DTC Detection Condition

Action to take

P1850

SOL CURRENT
[P1850]

The differential lock relay does not switch to OFF or there 
is a short to power in the harness. 

Inspect the differential lock 
solenoid. Refer to 

DLN-290, 

"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

AWDIA0309ZZ

P1850 SOLENOID CURRENT

DLN-291

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check for a mechanical malfunction with the differential

lock system. Replace differential solenoid.

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-310, "Removal and Installation"

.

 NG

>> Repair harness or connector.

Component

(+)

(-)

Solenoid operation

Terminal

Terminal

Differential lock 

solenoid

4

2

Yes

AWDIA0310ZZ

A

B

Continuity

Connector

Terminal

Connector

Terminal

M70

11

C117

4

Yes

12

2

A

—

Continuity

Connector

Terminal

M70

11

Ground

No

12

AWDIA0311ZZ

DLN-292

< COMPONENT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C1203 ABS SYSTEM

C1203 ABS SYSTEM

Description

INFOID:0000000005275621

The differential lock control unit and the ABS actuator and electric unit (control unit) are in communication via
the CAN communication network. Vehicle speed and wheel slippage information is used by the differential lock
control unit to determine if conditions are met to actuate the differential lock solenoid. 

DTC Logic

INFOID:0000000005275622

DTC

Display contents of CONSULT-III

DTC Detection Condition

Action to take

C1203

ABS SYSTEM
[C1203]

A malfunction related to wheel speed sensors has been 
detected by the ABS actuator and electric unit (control 
unit). 

Check for proper ABS oper-
ation. Refer to 

BRC-95, 

"CONSULT-III Function 
(ABS)"

 (Type 2) or 

BRC-

212, "CONSULT-III Function 
(ABS)"

 (Type 3).