Infiniti QX4 2003 Maintenance Manual

MAINTENANCE

CONTENTS

PRECAUTIONS ...............................................................3

Precautions for Supplemental Restraint System (SRS) ″AIR BAG″ and ″SEAT BELT

PRE-TENSIONER″......................................................3

PREPARATION ...............................................................4

Special Service Tool....................................................4

Commercial Service Tool.............................................4

GENERAL MAINTENANCE............................................5

PERIODIC MAINTENANCE ............................................7

Schedule 1...................................................................8

EMISSION CONTROL SYSTEM MAINTENANCE CHASSIS AND BODY MAINTENANCE

Schedule 2.................................................................10

EMISSION CONTROL SYSTEM MAINTENANCE CHASSIS AND BODY MAINTENANCE

RECOMMENDED FLUIDS AND LUBRICANTS...........12

Fluids and Lubricants ................................................12

SAE Viscosity Number ..............................................13

GASOLINE ENGINE OIL

Anti-freeze Coolant Mixture Ratio .............................13

ENGINE MAINTENANCE..............................................14

Checking Drive Belts.................................................14

Changing Engine Coolant..........................................15

-DRAINING ENGINE COOLANT-

-REFILLING ENGINE COOLANT-

-FLUSHING COOLING SYSTEM-

Checking Fuel Lines..................................................17

Changing Fuel Filter..................................................17

WITH CONSULT-II WITHOUT CONSULT-II

Changing Air Cleaner Filter .......................................18

VISCOUS PAPER TYPE

Changing Engine Oil..................................................18

Changing Oil Filter.....................................................19

Changing Spark Plugs...............................................20

Checking EVAP Vapor Lines.....................................21

CHASSIS AND BODY MAINTENANCE.......................22

Checking Exhaust System.........................................22

Checking A/T Fluid ....................................................22

Changing A/T Fluid....................................................22

..........................................13

..............................................17

.......................................18

...........................................18

........................9

......................11

..............................15

..............................16

.........8

.......10

SECTION

Checking All-mode 4WD Transfer Fluid....................23

Changing All-mode 4WD Transfer Fluid....................23

Checking Propeller Shaft...........................................24

Greasing Propeller Shaft...........................................24

Checking Differential Gear Oil...................................24

Changing Differential Gear Oil ..................................25

LIMITED-SLIP DIFFERENTIAL GEAR

Balancing Wheels......................................................25

Tire Rotation..............................................................25

Checking Brake Fluid Level and Leaks.....................26

Checking Brake Lines and Cables............................26

Checking Disc Brake.................................................26

ROTOR CALIPER PAD

Checking Drum Brake ...............................................27

WHEEL CYLINDER DRUM LINING

Checking Steering Gear, Linkage and Transfer

Gear...........................................................................27

STEERING GEAR STEERING LINKAGE STEERING TRANSFER GEAR

Checking Power Steering Fluid and Lines................27

CHECKING FLUID LEVEL CHECKING LINES

Axle and Suspension Parts.......................................28

FRONT WHEEL BEARING

Drive Shaft.................................................................29

Vacuum Hose ............................................................29

Lubricating Locks, Hinges and Hood Latches...........29

Checking Seat Belts, Buckles, Retractors,

Anchors and Adjusters...............................................30

SERVICE DATA AND SPECIFICATIONS (SDS).........31

Engine Maintenance..................................................31

DRIVE BELT DEFLECTION DRIVE BELT TENSION SPARK PLUG (PLATINUM-TIPPED TYPE)

Chassis and Body Maintenance................................31

...................................................................26

.................................................................26

........................................................................26

.....................................................................27

....................................................................27

........................25

..................................................27

....................................................27

...............................................27

..................................27

........................................27

...................................................28

.......................................28

......................................31

............................................31

................31

IDX

CONTENTS (Cont’d)

WHEEL BALANCE

...................................................31

MA-2

PRECAUTIONS

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”

The Supplemental Restraint System such as “AIR BAG” used along with a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. The SRS system composition which is available to INFINITI QX4 is as follows:

쐌 For a frontal collision

The Supplemental Restraint System consists of driver air bag module (located in the center of the steering wheel), front passenger air bag module (located on the instrument panel on passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning lamp, wiring harness and spiral cable.

쐌 For a side collision

The Supplemental Restraint System consists of side air bag module (located in the outer side of front seat), satellite sensor, diagnosis sensor unit (one ofcomponents of air bags for a frontal collision),wiring harness, warning lamp (one of components of air bags for a frontal collision).

Information necessary to service the system safely is included in the RS section of this Service Manual.

WARNING:

쐌 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 INFINITI dealer.

쐌 Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-

sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the RS section.

쐌 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 harness connector (and by yellow harness protector or yellow insulation tape before the harness connectors).

NBMA0001

MA-3

IDX

Special Service Tool

PREPARATION

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number (Kent-Moore No.) Tool name

KV10115801 (J38956) Oil filter cap wrench

Description

Removing oil filter

a: 64.3 mm (2.531 in)

NT375

Commercial Service Tool

Tool name (Kent-Moore No.)

Belt tension gauge (BT3373-F)

Description

Checking drive belt tension

AMA126

NBMA0002

NBMA0045

MA-4

NBMA0003

GENERAL MAINTENANCE

General maintenance includes those items which should be checked during the normal day-to-day operation of the vehicle. They are essential if the vehicle is to continue operating properly. The owners can perform checks and inspections themselves or they can have their INFINITI dealers do them.

OUTSIDE THE VEHICLE

The maintenance items listed here should be performed from time to time, unless otherwise specified.

Item Reference page

Tires Check the pressure with a gauge, including the spare, at least once a month

and always prior to a long distance trips. Adjust to the specified pressure if necessary. Check carefully for damage, cuts or excessive wear.

Wheel nuts When checking the tires, make sure no nuts are missing, and check for any

loose nuts. Tighten if necessary.

Tire rotation Tires should be rotated every 12,000 km (7,500 miles). MA-25 Wheel alignment and

balance

Windshield wiper blades

Doors and engine hood

If the vehicle pulls to either side while driving on a straight and level road, or if you detect uneven or abnormal tire wear, there may be a need for wheel alignment. If the steering wheel or seat vibrates at normal highway speeds, wheel balancing may be needed.

Check for cracks or wear if they do not wipe properly. —

Check that all doors and the engine hood operate smoothly as well as the trunk lid and back hatch. Also make sure that all latches lock securely. Lubricate if necessary. Make sure that the secondary latch keeps the hood from opening when the primary latch is released. When driving in areas using road salt or other corrosive materials, check lubrication frequently.

MA-25, SU-7, “Front

—

Wheel Alignment”

MA-29

INSIDE THE VEHICLE

The maintenance items listed here should be checked on a regular basis, such as when performing periodic maintenance, cleaning the vehicle, etc.

Item Reference page

Lamps Make sure that the headlamps, stop lamps, tail lamps, turn signal lamps, and

other lamps are all operating properly and installed securely. Also check headlamp aim.

Warning lamps and buzzers/chimes

Windshield wiper and washer

Windshield defroster Check that the air comes out of the defroster outlets properly and in suffi-

Steering wheel Check that it has the specified play. Be sure to check for changes in the

Seats Check seat position controls such as seat adjusters, seatback recliner, etc. to

Seat belts Check that all parts of the seat belt system (e.g. buckles, anchors, adjusters

Brakes Check that the brake does not pull the vehicle to one side when applied. —

Make sure that all warning lamps and buzzers/chimes are operating properly. —

Check that the wipers and washer operate properly and that the wipers do not streak.

cient quantity when operating the heater or air conditioning.

steering condition, such as excessive play, hard steering or strange noises.

Free play: Less than 35 mm (1.38 in)

make sure they operate smoothly and that all latches lock securely in every position. Check that the head restrains move up and down smoothly and that the locks (if equipped) hold securely in all latched positions. Check that the latches lock securely for folding-down rear seatbacks.

and retractors) operate properly and smoothly and are installed securely. Check the belt webbing for cuts, fraying, wear or damage.

RS-7, “Seat Belt Inspec-

—

MA-30

tion”

IDX

MA-5

GENERAL MAINTENANCE

Item Reference page

Brake pedal and booster

Parking brake Check that the lever has the proper travel and make sure that the vehicle is

Automatic transmission “Park” mechanism

Check the pedal for smooth operation and make sure it has the proper distance under it when depressed fully. Check the brake booster function. Be sure to keep floor mats away from the pedal.

held securely on a fairly steep hill when only the parking brake is applied. Check that the lock release button on the selector lever operates properly

and smoothly. On a fairly steep hill check that the vehicle is held securely with the selector lever in the “P” position without applying any brakes.

Refer to BR-12, “Brake

Pedal and Bracket” and

“Brake Booster”

Refer to BR-29, “Parking

Brake Control”

—

UNDER THE HOOD AND VEHICLE

The maintenance items listed here should be checked periodically (e.g. each time you check the engine oil or refuel).

Item Reference page

Windshield washer fluid

Engine coolant level Check the coolant level when the engine is cold. MA-16 Radiator and hoses Check the front of the radiator and clean off any dirt, insects, leaves, etc.,

Brake fluid level Make sure that the brake fluid level is between the “MAX” and “MIN” lines on

Battery Check the fluid level in each cell. It should be between the “MAX” and “MIN”

Check that there is adequate fluid in the tank. —

that may have accumulated. Make sure the hoses have no cracks, deformation, deterioration or loose connections.

the reservoir.

lines. Vehicles operated in high temperatures or under severe conditions require frequent checks of the battery fluid level.

—

MA-26

—

Engine drive belts Make sure that no belt is frayed, worn, cracked or oily. MA-14 Engine oil level Check the level on the dipstick after parking the vehicle on a level spot and

turning off the engine.

Power steering fluid level and lines

Automatic transmission fluid level

Exhaust system Make sure there are no loose supports, cracks or holes. If the sound of the

Underbody The underbody is frequently exposed to corrosive substances such as those

Fluid leaks Check under the vehicle for fuel, oil, water or other fluid leaks after the

Check the level on the dipstick with the engine off. Check the lines for improper attachment, leaks, cracks, etc.

Check the level on the dipstick after putting the selector lever in “P” with the engine idling.

exhaust seems unusual or there is a smell of exhaust fumes, immediately locate the trouble and correct it.

used on icy roads or to control dust. It is very important to remove these substances, otherwise rust will form on the floor pan, frame, fuel lines and around the exhaust system. At the end of winter, the underbody should be thoroughly flushed with plain water, being careful to clean those areas where mud and dirt can easily accumulate.

vehicle has been parked for a while. Water dripping from the air conditioner after use is normal. If you should notice any leaks or gasoline fumes are evident, check for the cause and correct it immediately.

MA-18

MA-27

MA-22

—

MA-6

NBMA0004

PERIODIC MAINTENANCE

Two different maintenance schedules are provided, and should be used, depending upon the conditions in which the vehicle is mainly operated. After 60,000 miles (96,000 km) or 48 months, continue the periodic

maintenance at the same mileage/time intervals.

Schedule 1

Schedule 2

Follow Periodic Maintenance Schedule 1 if your driving habits frequently includes one or more of the following driving conditions:

쐌 Repeated short trips of less than 5 miles (8 km). 쐌 Repeated short trips of less than 10 miles (16 km) with outside tempera-

tures remaining below freezing.

쐌 Operating in hot weather in stop-and-go “rush hour” traffic. 쐌 Extensive idling and/or low speed driving for long distances, such as police,

taxi or door-to-door delivery use.

쐌 Driving in dusty conditions. 쐌 Driving on rough, muddy, or salt spread roads. 쐌 Towing a trailer, using a camper or a car-top carrier.

Follow Periodic Maintenance Schedule 2 if none of the driving conditions shown in Schedule 1 apply to your driving habits.

Emission Control System Maintenance

Chassis and Body Maintenance

Emission Control System Maintenance

Chassis and Body Maintenance

MA-8

MA-9

MA-10

MA-11

Maintenance for off-road driving ( only)

Whenever you drive off-road through sand, mud or water, more frequent maintenance may be required of the following items:

왖 Brake pads and discs 왖 Brake lining and drums 왖 Brake lines and hoses 왖 Wheel bearing grease 왖 Differential, transmission and transfer oil 왖 Steering linkage 왖 Propeller shaft and drive shafts 왖 Air cleaner filter

MA-7

IDX

Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only

EMISSION CONTROL SYSTEM MAINTENANCE

Schedule 1

MAINTENANCE OPERATION MAINTENANCE INTERVAL Perform at number of miles,

kilometers or months, whichever comes first.

Drive belts I* I* MA-14 Air cleaner filter NOTE (1) [R] [R] MA-18 EVAP vapor lines I* I* MA-21 Fuel lines I* I* MA-17 Fuel filter* NOTE (2) MA-17 Engine coolant NOTE (3) R* MA-15 Engine oil R R R R R R R R RRRRR R RR MA-18 Engine oil filter (Use part No.

15208-31U00 or 15208 65F00 or equivalent.)

MA-8

Spark plugs (PLATINUMTIPPED type)

Intake & exhaust valve clearance*

NOTE:

(1) If operating mainly in dusty conditions, more frequent maintenance may be required. (2) When the filter becomes clogged, the vehicle speed cannot be increased as the driver wishes. In such an event, replace the filter. (3) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months. (4) If valve noise increases, inspect valve clearance. ★ Maintenance items and intervals with “*” are recommended by INFINITI for reliable vehicle operation. The owner need not perform such maintenance in order to maintain the

emission warranty or manufacturer recall liability. Other maintenance items and intervals are required.

Miles x 1,000

(km x 1,000)

Months

NOTE (4) EM-54

3.75

7.5

11.25

(6)

(12)

RRRRRRRRRRRRR R RR MA-19

(18)

(24)

18.75

22.5

26.25

(30)

(36)

Replace every 105,000 miles (169,000 km) MA-20

(42)

(48)

33.75 (54)

37.5 (60)

41.25 (66)

(72)

48.75 (78)

52.5 (84)

56.25 (90)

Reference Section

(96)

- Content Title

- Page or

PERIODIC MAINTENANCE

Schedule 1

NBMA0004S0101

NBMA0004S01

Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. L = Lubricate.

CHASSIS AND BODY MAINTENANCE

MAINTENANCE OPERATION MAINTENANCE INTERVAL

Perform at number of miles, kilometers or months, whichever comes first.

Brake lines & cables I I I I MA-26 Brake pads, rotors, drums &

linings Automatic transmission & all-

mode 4WD transfer fluid & differential gear oil (exc. LSD)

LSD gear oil NOTE (1) I R I R MA-25 Steering gear, linkage & transfer

gear, axle & suspension parts Tire rotation NOTE (2) MA-5 Drive shaft boots & propeller

MA-9

shaft ( Propeller shaft ( “Front wheel bearing

grease” Front wheel bearing

grease

)

) NOTE (3) LLLLLLLLMA-24

4x2 I I MA-28

Miles x 1,000

(km x 1,000)

Months

NOTE (1) I I I I MA-22, 23, 24

NOTE (4) I R I R MA-28

3.75

7.5

11.25

(6)

(12)

IIIIIIIIMA-26, 27

IIIIIIII

(18)

(24)

18.75 (30)

22.5 (36)

26.25 (42)

(48)

33.75 (54)

37.5 (60)

41.25 (66)

(72)

48.75 (78)

52.5 (84)

56.25 (90)

(96)

Reference

Section

- Page or

- Content Title

PERIODIC MAINTENANCE

MA-27 MA-28

MA-29 MA-24

Exhaust system IIIIIIIIMA-22

In-cabin microfilter R R R R

ASCD vacuum hoses I I I I

NOTE:

(1) If towing a trailer, using a camper or a car-top carrier, or driving on rough or muddy roads, change (not just inspect) fluid (A/T, all-mode 4WD transfer)/differential gear oil (exc. LSD) at every 30,000 miles (48,000 km) or 24 months, and change LSD gear oil every 15,000 miles (24,000 km) or 12 months.

(2) Refer to “Tire rotation” under the “GENERAL MAINTENANCE” heading earlier in this section. (3) The propeller shaft should be re-greased after being immersed in water. (4) If operating frequently in water, replace grease every 3,750 miles (6,000 km) or 3 months.

IDX

HA-159, “In-cabin

microfilter”

MA-29

EL-277

Schedule 1 (Cont’d)

NBMA0004S0102

Abbreviations: R = Replace. I = Inspect. Correct or replace if necessary. [ ]: At the mileage intervals only

EMISSION CONTROL SYSTEM MAINTENANCE

Schedule 2

MAINTENANCE OPERATION MAINTENANCE INTERVAL

Perform at number of miles, kilometers or months, whichever comes first.

Drive belts I* I* MA-14 Air cleaner filter [R] [R] MA-18 EVAP vapor lines I* I* MA-21 Fuel lines I* I* MA-17 Fuel filter* NOTE (1) MA-17 Engine coolant NOTE (2) R* MA-15 Engine oil RRRRRRRR MA-18 Engine oil filter (Use part No. 15208-31U00

or 15208 65F00 or equivalent.) Spark plugs (PLATINUM-TIPPED type) Replace every 105,000 miles (169,000 km) MA-20

MA-10

Intake & exhaust valve clearance* NOTE (3) EM-54

NOTE:

(1) When the filter becomes clogged, the vehicle speed cannot be increased as the driver wishes. In such an event, replace the filter. (2) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months. (3) If valve noise increases, inspect valve clearance. ★ Maintenance items and intervals with “*” are recommended by INFINITI for reliable vehicle operation. The owner need not perform such maintenance in order to maintain the

emission warranty or manufacturer recall liability. Other maintenance items and intervals are required.

Miles x 1,000

(km x 1,000)

Months

7.5

(12)

RRRRRRRR MA-19

(24)

22.5 (36)

(48)

37.5 (60)

(72)

52.5 (84)

(96)

Reference Section

- Page or

- Content Title

PERIODIC MAINTENANCE

Schedule 2

NBMA0004S0201

NBMA0004S02

+ 22 hidden pages