Nissan Frontier. Manual - part 348

 

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Nissan Frontier. Manual - part 348

 

 

DLN-294

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

LOCK INDICATOR LAMP

LOCK INDICATOR LAMP

Description

INFOID:0000000009479855

The DIFF LOCK indicator lamp has power available to it any time the ignition switch is in the ON or START

position. The differential lock control unit supplies ground to activate the DIFF LOCK indicator lamp. The DIFF

LOCK indicator lamp will go through a prove out at initial key ON. The DIFF LOCK will flash while the differen-

tial lock system is activating or while waiting for conditions to be met to activate. Once the differential lock has

been engaged, the DIFF LOCK indicator lamp will remain ON. For more information about the DIFF LOCK

indicator lamp, refer to the Owner’s Manual. 

Component Function Check

INFOID:0000000009479856

1.

CHECK DIFF LOCK INDICATOR LAMP OPERATION

1. Turn the ignition switch ON.

2. Observe the DIFF LOCK indicator lamp.

Does the DIFF LOCK indicator lamp prove out normally?

YES

>> DIFF LOCK indicator lamp is operating normally.

NO, ALWAYS ON>> Perform self diagnostics on differential lock control unit. Refer to 

DLN-273, "DIFFEREN-

TIAL LOCK CONTROL UNIT : CONSULT Function (DIFF LOCK)"

.

NO, ALWAYS OFF>>Check DIFF LOCK indicator lamp control circuit. Refer to 

DLN-294, "Diagnosis Proce-

dure"

.

Diagnosis Procedure

INFOID:0000000009479857

Regarding Wiring Diagram information, refer to 

DLN-298, "Wiring Diagram"

.

1.

CHECK DIFFERENTIAL LOCK CONTROL UNIT POWER AND GROUND SUPPLY

Check the differential lock control unit power and ground supply. Refer to 

DLN-276, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace malfunctioning component. 

2.

CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND COMBINATION METER

1. Turn ignition switch OFF.

2. Disconnect differential lock control unit harness connector and

combination meter harness connector.

3. Check continuity between differential lock control unit harness

connector M70 (A) terminal 21 and combination meter harness

connector M24 (B) terminal 25.

4. Check continuity between differential lock control unit harness

connector M70 (A) terminal 21 and ground.

Is the inspection result normal?

Ignition switch ON

Indicator prove out

A

B

Continuity

Connector

Terminal

Connector

Terminal

M70

21

M24

25

Yes

A

Continuity

Connector

Terminal

M70

21

Ground

No

AWDIA0312ZZ

LOCK INDICATOR LAMP

DLN-295

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

YES

 >> Replace combination meter. Refer to 

MWI-90, "Removal and Installation"

.

NO

>> Repair harness or connector.

DLN-296

< ECU DIAGNOSIS INFORMATION >

[REAR FINAL DRIVE: M226 (ELD) ]

DIFFERENTIAL LOCK CONTROL UNIT

ECU DIAGNOSIS INFORMATION

DIFFERENTIAL LOCK CONTROL UNIT

Reference Value

INFOID:0000000009479858

DIFFERENTIAL LOCK CONTROL UNIT TERMINAL CONNECTOR LAYOUT

Data are reference value and are measured between each terminal and ground.

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

SDIA2573E

Terminal No.

(Wire color)

Description

Condition

Voltage (V) (Ap-

prox.)

+

-

Signal name

Input/

Output

1

(W/G)

Ground

Ign power supply

Input

Ignition ON or START

Battery voltage

2

(W/G)

Ground

Ign power supply

Input

Ignition ON or START

Battery voltage

3

(B)

Ground

Ground

Input

Ignition ON

Less than 0.2V

4

(P)

CAN-L

5

(L)

CAN-H

9

(Y)

Ground

Differential lock mode switch 
(ON)

Input

Differential lock mode switch: ON

Battery voltage

Differential lock mode switch: OFF

0V

10

(B)

Ground

Ground

Input

Ignition ON

Less than 0.2V

11

(GR)

Ground

Differential lock solenoid 
(LO)

Output

Differential lock mode switch: ON

0V

Differential lock mode switch: OFF

Battery voltage

12

(L)

Ground

Differential lock solenoid 
(HIGH)

Output

Differential lock mode switch: ON

0V

Differential lock mode switch: OFF

Battery voltage

13

(SB)

K-LINE

15

(R/Y)

Ground

Battery power supply
(Memory back-up)

Input

Ignition OFF

Battery voltage

20

(BR)

Ground

Differential lock position 
switch

Input

Differential lock mode switch: ON
(DIFF LOCK indicator lamp: ON)

0V

Differential lock mode switch: OFF
(DIFF LOCK indicator lamp: OFF)

Battery voltage

21

(SB)

Ground

DIFF LOCK indicator lamp

Output

DIFF LOCK indicator lamp: ON

0V

DIFF LOCK indicator lamp: OFF

Battery voltage

22

(G)

Ground

Differential lock mode switch 
(OFF)

Input

Differential lock mode switch: ON

0V

Differential lock mode switch: OFF

Battery voltage

DIFFERENTIAL LOCK CONTROL UNIT

DLN-297

< ECU DIAGNOSIS INFORMATION >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

DTC Index

INFOID:0000000009479859

CAUTION:

If “CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform the trouble diagnosis for CAN communication
line.

Items (CONSULT screen 

terms)

Diagnostic item is detected when...

Check item

INITIAL START
[P1833]

Due to removal of battery which cuts off power supply to differential 
control unit, self-diagnosis memory function is suspended.

DLN-276, "Description"

CONTROL UNIT 1
[P1834]

Malfunction is detected in the memory (RAM) system of differential 
lock control unit.

DLN-277, "Description"

CONTROL UNIT 2
[P1835]

Malfunction is detected in the memory (ROM) system of differential 
lock control unit.

DLN-278, "Description"

CONTROL UNIT 3
[P1836]

Malfunction is detected in the memory (EEPROM) system of differ-
ential lock control unit.

DLN-279, "Description"

CONTROL UNIT 4
[P1837]

AD converter system of differential lock control unit is malfunctioning.

DLN-280, "Description"

ON SW
[P1838]

More than two switch inputs are simultaneously detected due to 
short circuit of differential lock mode switch.

DLN-281, "Description"

POSI SW ON
[P1839]

When differential lock position switch is ON, rotation difference oc-
curs in wheel speed (rear wheel right and left).

DLN-283, "Description"

RELAY
[P1844]

Differential lock control unit detects as irregular by comparing target 
value with monitor value.

DLN-285, "Description"

SOL CIRCUIT
[P1847]

Malfunction is detected in differential lock control unit internal circuit.

DLN-286, "Description"

SOL DISCONNECT
[P1848]

• Differential lock solenoid internal circuit or harness is open.
• Differential lock solenoid relay does not switch to ON position.

DLN-287, "Description"

SOL SHORT
[P1849]

Differential lock solenoid internal circuit or harness is shorted.

DLN-289, "Description"

SOL CURRENT
[P1850]

Differential lock solenoid relay does not switch to OFF position.

DLN-291, "Description"

ABS SYSTEM
[C1203]

Malfunction related to wheel sensor has been detected by ABS ac-
tuator and electric unit (control unit).

DLN-293, "Description"

CAN COMM CIRCUIT
[U1000]

Malfunction has been detected from CAN communication line.

DLN-275, "Description"

NO DTC IS DETECTED.
FURTHER TESTING MAY 
BE REQUIRED.

No malfunction has been detected.

 

 

 

 

 

 

 

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