Nissan Titan. Manual - part 168

DLN-244

< SYMPTOM DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

DIFF LOCK INDICATOR LAMP DOES NOT TURN ON WITH DIFFERENTIAL 

LOCK SWITCHED ON

DIFF LOCK INDICATOR LAMP DOES NOT TURN ON WITH DIFFEREN-
TIAL LOCK SWITCHED ON

Inspection Procedure

INFOID:0000000009886147

SYMPTOM:

DIFF LOCK indicator lamp does not turn ON when turning differential lock mode switch to “ON” after

engine start.

DIAGNOSTIC PROCEDURE

1.

CHECK DIFF LOCK INDICATOR LAMP

Confirm the DIFF LOCK indicator lamp proves out when ignition switch is turned ON.
Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to 

DLN-243, "Inspection Procedure"

 .

2.

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

DLN-214, "CONSULT Function (DIFF LOCK)"

 .

Is any DTC detected by self-diagnosis?

YES

>> Check the malfunctioning system. Refer to 

DLN-237, "DTC Index"

.

NO

>> GO TO 3.

3.

CHECK DIFFERENTIAL LOCK MODE SWITCH OPERATION

Check differential lock mode switch. Refer to 

DLN-222, "Diagnosis Procedure"

 .

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair component, harness or connector.

4.

CHECK DIFFERENTIAL LOCK CONTROL UNIT POWER SUPPLY AND GROUND CIRCUIT

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

DLN-217, "Diagnosis Procedure"

.
Is the inspection result normal?

YES

>> Replace the differential lock control unit. Refer to 

DLN-251, "Removal and Installation"

.

NO

>> Repair harness or connector.

DIFF LOCK INDICATOR LAMP FLASHES WHILE DRIVING

DLN-245

< SYMPTOM DIAGNOSIS >

[REAR FINAL DRIVE: M226 (ELD) ]

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DIFF LOCK INDICATOR LAMP FLASHES WHILE DRIVING

Description

INFOID:0000000009886148

The DIFF LOCK indicator lamp will flash once every 2 seconds when the differential lock system is in standby

condition. Standby condition is the time between when the differential lock mode switch is turned ON and

when the differential lock control unit see’s all conditions are met to engage the differential lock. The DIFF

LOCK indicator lamp should be OFF if there has been a fault detected. For more information regarding the dif-

ferential lock system operation, refer to the Owner’s Manual. 

Inspection Procedure

INFOID:0000000009886149

SYMPTOM:

DIFF LOCK indicator lamp sometimes flashes while driving.

DIAGNOSTIC PROCEDURE

1.

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

DLN-214, "CONSULT Function (DIFF LOCK)"

 .

Is any malfunction detected by self-diagnosis?

YES

>> Check the malfunctioning system. Refer to 

DLN-237, "DTC Index"

.

NO

>> GO TO 2.

2.

CHECK DIFFERENTIAL LOCK MODE SWITCH

Perform trouble diagnosis for differential lock mode switch. Refer to 

DLN-222, "Diagnosis Procedure"

 .

Is the inspection result normal?

YES

>> Condition is intermittent. Refer to 

GI-42, "Intermittent Incident"

.

NO

>> Repair or replace malfunctioning component.

DLN-246

< PRECAUTION >

[REAR FINAL DRIVE: M226 (ELD) ]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"

INFOID:0000000009886150

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SR and SB section of this Service Man-

ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-

tion ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a

hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing

serious injury.

• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

Precaution

INFOID:0000000009886151

• Before connecting or disconnecting differential lock control

unit harness connector, turn ignition switch “OFF” and dis-

connect the battery cable from the negative terminal. Because

battery voltage is applied to differential lock control unit even

if ignition switch is turned “OFF”.

• When connecting or disconnecting pin connectors into or

from differential lock control unit, take care not to damage pin

terminals (bend or break).

When connecting pin connectors make sure that there are not

any bends or breaks on differential lock control unit pin termi-

nal.

SEF289H

SEF291H

PRECAUTIONS

DLN-247

< PRECAUTION >

[REAR FINAL DRIVE: M226 (ELD) ]

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• Before replacing differential lock control unit, perform differ-

ential lock control unit input/output signal inspection and

make sure whether differential lock control unit functions

properly or not. Refer to 

DLN-236, "Reference Value"

.

Precaution for Servicing Rear Final Drive

INFOID:0000000009886152

• Before starting diagnosis of the vehicle, understand the symptoms well. Perform correct and systematic

operations. 

• Check for the correct installation status prior to removal or disassembly. When matching marks are required,

be certain they do not interfere with the function of the parts they are applied to. 

• Overhaul should be done in a clean work area, a dust proof area is recommended.

• Before disassembly, completely remove sand and mud from the exterior of the unit, preventing them from

entering into the unit during disassembly or assembly.

• Always use shop paper for cleaning the inside of components.

• Avoid using cotton gloves or a shop cloth to prevent the entering of lint.

• Check appearance of the disassembled parts for damage, deformation, and abnormal wear. Replace them

with new ones if necessary. 

• Gaskets, seals and O-rings should be replaced any time the unit is disassembled.

• Clean and flush the parts sufficiently and blow them dry.

• Be careful not to damage sliding surfaces and mating surfaces.

• When applying sealant, remove the old sealant from the mating surface; then remove any moisture, oil, and

foreign materials from the application and mating surfaces.

• In principle, tighten nuts or bolts gradually in several steps working diagonally from inside to outside. If a

tightening sequence is specified, observe it.

• During assembly, observe the specified tightening torque.

• Add new differential gear oil, petroleum jelly, or multi-purpose grease, as specified.

SDIA1848E