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Nissan Titan A60. Manual - part 319

DIFFERENTIAL LOCK SYSTEM

DLN-215

< SYSTEM DESCRIPTION >

[REAR FINAL DRIVE: M226 (ELD) ]

DLN

Component Description

INFOID:0000000006179571

Component

Function

Differential lock control unit

• Controls differential lock solenoid to lock/unlock the differential.
• As a fail-safe function, the differential lock disengages when a malfunction is detected

within the differential lock system.

Differential lock solenoid

Controls pressure plate operation when provided power and ground from the differential
lock control unit.

Differential lock position switch

Detects differential lock/unlock condition based on the position of the pressure plate.

Differential lock mode switch

Allows driver input for differential LOCK/UNLOCK to the differential lock control unit.

DIFF LOCK indicator lamp

Illuminates to indicate the differential lock is locked or in standby condition.

ABS actuator and electric unit (control unit)

Transmits the following signals via CAN communication to the differential lock control
unit.
• Vehicle speed signal
• VDC operation signal

Transfer control unit

Transmits the 4WD shift switch signal via CAN communication to the differential lock
control unit.

DLN-216

< SYSTEM DESCRIPTION >

[REAR FINAL DRIVE: M226 (ELD) ]

DIAGNOSIS SYSTEM (DIFFERENTIAL LOCK CONTROL UNIT)

DIAGNOSIS SYSTEM (DIFFERENTIAL LOCK CONTROL UNIT)

CONSULT-III Function (DIFF LOCK)

INFOID:0000000006179572

CONSULT-III can display each diagnostic item using the following direct diagnostic modes.

SELF DIAGNOSTIC RESULT

Display Item List

Refer to

DLN-239, "DTC Index"

DATA MONITOR

Direct Diagnostic Mode

Description

Ecu Identification

The differential lock control unit part number is displayed.

Self Diagnostic Result

The differential lock control unit self diagnostic results are displayed.

Data Monitor

The differential lock control unit input/output data is displayed in real time.

CAN Diag Support Mntr

The result of transmit/receive diagnosis of CAN communication is displayed.

Monitor Item [Unit]

Description

BATTERY VOLT [V]

Displays power supply voltage for the differential lock control unit.

4WD MODE [2H/4H/4Lo]

Displays 4WD shift switch position.

VHCL S/SEN-RL [km/h/mph]

Displays average of rear wheel speed sensors (left and right). Value is approximately equal to
the indication of vehicle speed on the speedometer (inside

±10%).

D-LOCK SW SIG [On/Off]

Displays differential lock mode switch position.

D-LOCK SIG [On/Off]

Displays control status of differential lock.

RELAY ON [On/Off]

Displays operating condition of differential lock solenoid relay (integrated in differential lock
control unit).

RELAY MTR [On/Off]

Displays control status of differential lock solenoid relay (integrated in differential lock control
unit).

SOL MTR [On/Off]

Displays control status of differential lock solenoid.

IND MTR [On/Off]

Displays control status of DIFF LOCK indicator lamp.

D-LOCK POS SW [On/Off]

Displays condition of differential lock position switch

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

DLN-217

< SYSTEM DESCRIPTION >

[REAR FINAL DRIVE: M226 (ELD) ]

DLN

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting Chart

INFOID:0000000006179573

Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.

×: Applicable

Reference page

Possible cause and SUSPECTED PARTS

ar t

oot

h ro

r co

t im

pro

h s

urf

worn

ckl

h i

ncorre

Com

fla

e e

xce

e ru

r oi

l im

rop

PROPELLER SHAF

REAR AXLE

REAR SUSPE

NSION

TIRES

ROA

WHEEL

AXLE SHAFT

BRAKES

STEERI

Symptom

Noise

DLN-218

< DTC/CIRCUIT DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000006179574

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-

tiplex communication line with high data communication speed and excellent error detection ability. Many elec-

tronic control units are equipped onto a vehicle and each control unit shares information and links with other

control units during operation (not independent). In CAN communication, control units are connected with 2

communication lines (CAN-H, CAN-L) allowing a high rate of information transmission with less wiring. Each

control unit transmits/receives data but selectively reads required data only.

CAN Communication Signal Chart. Refer to

LAN-51, "CAN Communication Signal Chart"

DTC Logic

INFOID:0000000006179575

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000006179576

PERFORM SELF DIAGNOSTIC

1. Turn ignition switch ON and wait for 2 seconds or more.

2. Check “Self Diagnostic Result” of differential lock control unit.
Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to

DLN-216, "CONSULT-III Function (DIFF LOCK)"

>> Refer to

GI-39, "Intermittent Incident"

DTC

Display contents of CON-

SULT-III

Diagnostic item is detected when ...

Probable malfunction location

U1000

CAN COMM CIRCUIT

When differential lock control unit is not trans-
mitting or receiving CAN communication signal
for 2 seconds or more.

CAN communication system

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