system NISSAN TERRANO 2002 Service Repair Manual

NVH Troubleshooting Chart Ð Engine Noise
Use the chart below to help you find the cause of the symptom.
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
Location of
noiseType of
noiseOperating condition of engine
Source of
noiseCheck itemReference
page Before
warm-upAfter
warm-upWhen
startingWhen
idlingWhen
racingWhile
driving
To p o f
engine
Rocker
cover
Cylinder
headTicking or
clickingC AÐA BÐTappet
noiseValve clearanceMA section
(ªAdjusting
Intake &
Exhaust
Valve
Clearanceº,
ªENGINE
MAINTE-
NANCEº)
Rattle C A Ð A B CCamshaft
bearing
noiseCamshaft bushing clearance
Camshaft runoutEM-31, 31
Crankshaft
pulley
Cylinder
block (Side
of engine)
Oil panSlap or
knockÐAÐB BÐPiston pin
noisePiston and piston pin clear-
ance
Connecting rod bushing
clearanceEM-71, 73
Slap or rap A Ð Ð B B APiston slap
noisePiston-to-bore clearance
Piston ring side clearance
Piston ring end gap
Connecting rod bend and
torsionEM-75, 72,
72, 73
Knock A B C B B BConnecting
rod bearing
noiseConnecting rod bushing
clearance (Small end)
Connecting rod bearing
clearance (Big end)EM-73, 77
Knock A B Ð A B CMain bear-
ing noiseMain bearing oil clearance
Crankshaft runoutEM-78, 76
Front of
engine
Timing gear
coverTapping or
tickingAAÐBBBTiming gear
noiseTiming gear backlash EM-41
Front of
engineSqueaking
or fizzingA BÐBÐCOther drive
belts (Stick-
ing or slip-
ping)Drive belts deflectionMA section
(ªChecking
Drive Beltsº,
ªENGINE
MAINTE-
NANCEº) CreakingABABABOther drive
belts (Slip-
ping)Idler pulley bearing operation
Squall
CreakABÐBABWater pump
bearing
noiseWater pump bearing opera-
tionLC section
(ªWater
Pump
Inspectionº,
ªENGINE
COOLING
SYSTEMº)
A: Closely related B: Related C: Sometimes related Ð: Not related
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGZD
EM-9

Removal and Installation
REMOVAL
1. Remove the following parts.
IUndercover
IUnder guard
IEngine coolant (drain)
Refer to MA section, ªChanging Engine Coolantº.
IExhaust front tube
Refer to FE section, ªRemoval and Installationº, ªEXHAUST
SYSTEMº.
IRemove wires, harnesses, tubes and pipes.
YEM038
SEM296G
CATALYST AND TURBOCHARGERZD
EM-14

Trouble diagnosis of turbocharger
Preliminary check:
Check that the VNT control valve system has no malfunction. Refer
to EC section, ªECM Terminals and Reference Valueº in ªTROUBLE
DIAGNOSIS Ð GENERAL DESCRIPTIONº.
ICheck that the engine oil level is between MIN and MAX of the
dipstick. (When the engine oil amount is more than MAX, the
oil flows into the inlet duct through the blow-by gas passage,
and the turbocharger is misjudged failure.)
IAsk the customer if he/she always runs the vehicle in idle
engine speed to cool the oil down after driving.
IReplace the turbocharger assembly when any malfunction is
found after unit inspections specified in the table below.
IIf no malfunction is found after the unit inspections, judge that
the turbocharger body has no failure. Check the other parts
again.
Inspection item Inspection resultSymptom (when each inspection item
meets each inspection result)
Oil leak-
ageSmoke NoiseInsuffi-
cient
power/
accel-
eration
failure
Turbine wheelOil leaks.g
gg
Carbon is accumulated.g
qq
Friction with housing.gq
q
Blades are bent or broken.
Compressor wheelInside the air inlet is seriously contami-
nated by oil.qq
Friction with housing.gqq
Blades are bent or broken.
After checking both turbine and compressor,
inspect rotor shaft end play.There is resistance when the rotor shaft
is rotated by your fingertips.ggq
The rotor shaft sometimes does not
rotate by your fingertips.
There is too much play in the bearing.ggqg
Oil return portCarbon or sludge is accumulated in the
waste oil hole.g
gg
Operation of VNT control actuatorIThe actuator does not operate
smoothly when vacuum pressure is
gradually applied.
IStroke amount is not in compliance
with the vacuum pressure.q
: Large possibility
q: Medium possibility
g: Small possibility
INSTALLATION
1. Install catalyst.
:29-39N×m (2.9 - 3.3 kg-m, 21 - 23 ft-lb)
Place the protruding area of the gasket between the turbocharger
and the exhaust outlet upwards, and install the lipped side to the
turbocharger side. Refer to the figure, EM-14.
2. Install in the reverse order of removal.
CATALYST AND TURBOCHARGERZD
Inspection (Cont'd)
EM-17

Precautions
IDo not perform operation unless it is perfectly safe.
IDo not start operation unless the exhaust system and coolant
are cooled down.
ILift the engine at the designated support points only.
IPerform operations for the items other than the engine body,
referring to the applicable sections.
IRefer to MT section and AT section for rear mount.
Removal
IAfter removing transmission, hoist the engine and remove it.
Preparation
1. Drain coolant from radiator drain plugs.
2. Remove the following parts.
IEngine hood
IUndercover
IUnder protector
IBattery
IIntercooler
IRadiator shroud
IRadiator
IAccessory belt
ICooling fan
IExhaust front tube
YEM032
ENGINE REMOVALZD
EM-63

WARNING:
a. Situate vehicle on a flat and solid surface.
b. Place chocks at front and back of rear wheels.
c. Do not remove engine until exhaust system has completely
cooled off.
d. For safety during subsequent steps, the tension of wires
should be slackened against the engine.
e. Be sure to hoist engine in a safe manner.
f. For engines not equipped with engine slingers, attach
proper slingers and bolts described in PARTS CATALOG.
CAUTION:
IWhen lifting engine, be careful not to strike adjacent parts,
especially, brake lines and brake master cylinder.
IIn hoisting the engine, always use engine slingers in a safe
manner.
ENGINE REMOVALTD27Ti
EM-124

ACCELERATOR CONTROL, FUEL &
EXHAUST SYSTEM
SECTION
FE
CONTENTS
ZD30DDTi
ACCELERATOR CONTROL SYSTEM...........................2
Removal and Installation .............................................2
FUEL SYSTEM................................................................3
EXHAUST SYSTEM........................................................4TD27TiACCELERATOR CONTROL SYSTEM...........................5
Adjusting Accelerator Cable ........................................5
FUEL SYSTEM................................................................6
Fuel Pump and Gauge ................................................7
EXHAUST SYSTEM......................................................10

Removal and Installation
CAUTION:
The accelerator wire should be adjusted when removing and replacing any parts of the accelerator
control system, shown in the illustration.
a. Warm up engine to normal operating temperature. Then stop it.
b. Check to see if throttle valve fully opens when accelerator pedal is fully depressed and if it returns
to idle position when released.
c. Adjust accelerator pedal free play by turning adjusting nut.
d. Check accelerator control parts for improper contact with any adjacent parts.
e. When connecting accelerator wire, be careful not to twist or scratch its inner wire.
f. Apply a light coat of recommended multi-purpose grease to all sliding or friction surfaces. Do not
apply grease to wire.
g. For ASCD wire adjustment, refer to ªASCD Wire Adjustmentº in EL section.
INSPECTION AFTER INSTALLATION
ICheck if accelerator pedal moves smoothly within its range.
ICheck if accelerator pedal returns securely to its original position.
IPerform ªAccelerator Pedal Released Position Learningº when removing the accelerator pedal position
sensor harness connector. Refer to ªBASIC SERVICE PROCEDUREº in EC section for instructions.
YFE019
ACCELERATOR CONTROL SYSTEMZD30DDTi
FE-2

YFE020
FUEL SYSTEMZD30DDTi
FE-3

YFE021
EXHAUST SYSTEMZD30DDTi
FE-4

Adjusting Accelerator Cable
q1Pedal bracket
q
2Accelerator switchq
3Accelerator position sensor
q
4Accelerator cableq
5Return spring
q
6Accelerator pedal
INSPECTION AFTER INSTALLATION
ICheck if accelerator pedal moves smoothly within its range.
ICheck if accelerator pedal returns securely to its original position.
IPerform ªAccelerator Pedal Released Position Learningº when removing the accelerator pedal position
sensor harness connector. Refer to ªBASIC SERVICE PROCEDUREº in EC section for instructions.
IIf MI illuminates after engine has started, refer to ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº
in EC section for instructions.
NFE032
ACCELERATOR CONTROL SYSTEMTD27Ti
FE-5