Infiniti I35 (A33). Manual — part 561
Overheating Cause Analysis
NHLC0029
Symptom
Check items
Cooling sys-
tem parts
malfunction
Poor heat transfer
Water pump malfunction
Worn or loose drive belt
—
Thermostat stuck closed
—
Damaged fins
Dust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tube
Excess foreign material
(rust, dirt, sand, etc.)
Reduced air flow
Cooling fan does not oper-
ate
Refer to DTC P1217 in EC
section.
—
High resistance to fan rota-
tion
Fan assembly
Damaged fan blades
Damaged radiator shroud
—
—
—
Improper coolant mixture
ratio
—
—
—
Poor coolant quality
—
Coolant density
—
Insufficient coolant
Coolant leaks
Cooling hose
Loose clamp
Cracked hose
Water pump
Poor sealing
Radiator cap
Loose
Poor sealing
Radiator
O-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank
Cracked reservoir tank
Overflowing reservoir tank
Exhaust gas leaks into
cooling system
Cylinder head deterioration
Cylinder head gasket dete-
rioration
GI
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EC
FE
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AX
SU
BR
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RS
BT
HA
SC
EL
IDX
ENGINE COOLING SYSTEM
Overheating Cause Analysis
LC-25
Symptom
Check items
Except cool-
ing system
parts mal-
function
—
Overload on engine
Abusive driving
High engine rpm under no
load
Driving in low gear for
extended time
Driving at extremely high
speed
Powertrain system mal-
function
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow
Blocked bumper
—
—
Blocked radiator grille
Installed car brassiere
Mud contamination or
paper clogging
Blocked radiator
—
Blocked condenser
Blocked air flow
Installed large fog lamp
Service Data and Specifications (SDS)
THERMOSTAT
NHLC0030
Valve opening temperature
82°C (180°F)
Valve lift
More than 8.6 mm/95°C (0.339 in/203°F)
RADIATOR
NHLC0031
Unit: kPa (kg/cm
2
, psi)
Cap relief pressure
Standard
78 - 98 (0.8 - 1.0, 11 - 14)
Limit
59 (0.6, 9)
Leakage test pressure
157 (1.6, 23)
ENGINE COOLING SYSTEM
Overheating Cause Analysis (Cont’d)
LC-26
MAINTENANCE
CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . ...2
Precautions for Supplemental Restraint System
(SRS)
. . . . . . . . . . . . . ..2
PREPARATION . . . . . . . . . . . . . . . ...3
Special Service Tool . . . . . . . . . . . . . 3
Commercial Service Tool. . . . . . . . . . . .3
GENERAL MAINTENANCE . . . . . . . . . . . 4
PERIODIC MAINTENANCE . . . . . . . . . . . 6
Schedule 1. . . . . . . . . . . . . . . . ...7
EMISSION CONTROL SYSTEM MAINTENANCE
. . .7
. . . . . . 8
Schedule 2. . . . . . . . . . . . . . . . ...9
EMISSION CONTROL SYSTEM MAINTENANCE
. . .9
. . . . . ..10
RECOMMENDED FLUIDS AND LUBRICANTS. . ... 11
Fluids and Lubricants . . . . . . . . . . . . 11
SAE Viscosity Number . . . . . . . . . . . .. 11
. . . . . . . . . . .. 11
Anti-freeze Coolant Mixture Ratio . . . . . . . .12
ENGINE MAINTENANCE . . . . . . . . . . . ..13
Checking Drive Belts . . . . . . . . . . . . .13
Changing Engine Coolant. . . . . . . . . . ..14
. . . . . . . 14
. . . . . . ...14
. . . . . . . 15
Checking Fuel Lines . . . . . . . . . . . . ..15
Changing Air Cleaner Filter . . . . . . . . . ...16
. . . . . . . . . . ...16
Changing Engine Oil. . . . . . . . . . . . ..16
Changing Oil Filter. . . . . . . . . . . . . .17
Changing Spark Plugs. . . . . . . . . . . ...17
Checking EVAP Vapor Lines . . . . . . . . . .19
CHASSIS AND BODY MAINTENANCE . . . . . ...20
Checking Exhaust System. . . . . . . . . . .20
Checking A/T Fluid . . . . . . . . . . . . . 20
Changing A/T Fluid . . . . . . . . . . . . . 21
Balancing Wheels (Bonding Weight Type) . . . . 21
. . . . . . . . . . . . . . . ...21
. . . . . . . 21
Tire Rotation . . . . . . . . . . . . . . . ..23
Checking Brake Fluid Level and Leaks. . . . . .23
Checking Brake Lines and Cables . . . . . . . 23
Checking Disc Brake . . . . . . . . . . . . .23
. . . . . . . . . . . . . . . . ...23
. . . . . . . . . . . . . . . . .24
. . . . . . . . . . . . . . . . . . 24
Checking Steering Gear and Linkage . . . . . ...24
. . . . . . . . . . . . . 24
. . . . . . . . . . . ...24
Checking Power Steering Fluid and Lines . . . . 24
Axle and Suspension Parts . . . . . . . . . ...25
Drive Shaft . . . . . . . . . . . . . . . . .25
Lubricating Locks, Hinges and Hood Latches. . ...25
Checking Seat Belts, Buckles, Retractors,
Anchors and Adjusters. . . . . . . . . . . ...26
SERVICE DATA AND SPECIFICATIONS (SDS) . . .27
Engine Maintenance . . . . . . . . . . . . ..27
. . . . . . ..27
. . . . . . . . . . . . . . ..27
Chassis and Body Maintenance. . . . . . . . 27
. . . . . . . . . . . . ...27
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EC
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RS
BT
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Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT
PRE-TENSIONER”
NHMA0034
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 sys-
tem 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 that is necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
I
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.
I
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.
I
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
harness connectors.
PRECAUTIONS
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER”
MA-2
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