Nissan Titan. Manual - part 166

DLN-236

< ECU DIAGNOSIS INFORMATION >

[REAR FINAL DRIVE: M226 (ELD) ]

DIFFERENTIAL LOCK CONTROL UNIT

ECU DIAGNOSIS INFORMATION

DIFFERENTIAL LOCK CONTROL UNIT

Reference Value

INFOID:0000000009886143

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

(L)

Ground

Ign power supply

Input

Ignition ON or START

Battery voltage

2

(L)

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

(G)

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

(V)

Ground

Differential lock solenoid 
(LO)

Output

Differential lock mode switch: ON

0V

Differential lock mode switch: OFF

Battery voltage

12

(Y)

Ground

Differential lock solenoid 
(HIGH)

Output

Differential lock mode switch: ON

0V

Differential lock mode switch: OFF

Battery voltage

13

(G/W)

–

K-LINE

–

–

–

15

(Y/R)

Ground

Battery power supply
(Memory back-up)

Input

Ignition OFF

Battery voltage

20

(W/R)

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

(L)

Ground

DIFF LOCK indicator lamp

Output

DIFF LOCK indicator lamp: ON

0V

DIFF LOCK indicator lamp: OFF

Battery voltage

22

(O)

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-237

< 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:0000000009886144

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-217, "Description"

CONTROL UNIT 1
[P1834]

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

DLN-218, "Description"

CONTROL UNIT 2
[P1835]

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

DLN-219, "Description"

CONTROL UNIT 3
[P1836]

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

DLN-220, "Description"

CONTROL UNIT 4
[P1837]

AD converter system of differential lock control unit is malfunctioning.

DLN-221, "Description"

ON SW
[P1838]

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

DLN-222, "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-224, "Description"

RELAY
[P1844]

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

DLN-226, "Description"

SOL CIRCUIT
[P1847]

Malfunction is detected in differential lock control unit internal circuit.

DLN-227, "Description"

SOL DISCONNECT
[P1848]

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

DLN-228, "Description"

SOL SHORT
[P1849]

Differential lock solenoid internal circuit or harness is shorted.

DLN-230, "Description"

SOL CURRENT
[P1850]

Differential lock solenoid relay does not switch to OFF position.

DLN-232, "Description"

ABS SYSTEM
[C1203]

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

DLN-234, "Description"

CAN COMM CIRCUIT
[U1000]

Malfunction has been detected from CAN communication line.

DLN-216, "Description"

DLN-238

< WIRING DIAGRAM >

[REAR FINAL DRIVE: M226 (ELD) ]

REAR FINAL DRIVE

WIRING DIAGRAM

REAR FINAL DRIVE

Wiring Diagram

INFOID:0000000009886145

ABDWA0620GB

REAR FINAL DRIVE

DLN-239

< WIRING DIAGRAM >

[REAR FINAL DRIVE: M226 (ELD) ]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

ABDIA0941GB