check engine NISSAN PATROL 2000 Electronic Repair Manual

DIAGNOSTIC PROCEDURE 6
Self-diagnostic results:
ªLOCK MODEº displayed on CONSULT-II screen
Confirm SELF-DIAGNOSTIC RESULTS
ªLOCK MODEº is displayed on CON-
SULT-II screen.
1. Turn the ignition switch to OFF posi-
tion.
2. Turn the ignition key switch to ON
position with a registered key.
(Do not start engine.) Wait 5 seconds.
3. Return the key to the OFF position.
4. Repeat steps 2 and 3 twice (total of
three cycles).
5. Start the engine.
Does the engine start?
No
cYes
System is OK.
(Now the system is
escaped from ªLOCK
MODEº.)
CHECK NATS IMMU INSTALLATION.
Refer to ªHow to Replace NATS IMMUº in
EL-1183.
OK
cNG
Reinstall NATS IMMU cor-
rectly.
PERFORM INITIALIZATION.
Perform initialization with CONSULT-II.
For the initialization procedure, refer to
ªCONSULT-II operation manual NATSº.
Can the system be initialized?
Note: If the initialization is incompleted or
failed, CONSULT-II shows
message on the screen.
No
cYes
System is OK.
Go to DIAGNOSTIC PROCEDURE 4,
EL-1179 to check ªCHAIN OF IMMU-
KEYº.
SEL167X
SEL566W
.
.
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-1181

DIAGNOSTIC PROCEDURE 7
ªSECURITY IND. DOES NOT LIGHT UPº
Check 7.5A fuse [No.24, located in the
fuse block (J/B)].
OK
cNG
Replace fuse.
NATS INITIALIZATION
1) Install the 7.5A fuse.
2) Perform initialization with CON-
SULT-II.
For the operation of
initialization, refer to ªCON-
SULT-II operation manual
NATSº.
Turn ignition switch ªOFFº.
Start engine and turn ignition switch
ªOFFº.
Check the security ind. lighting.
NG
cOK
END
Check voltage between security ind. con-
nector terminal
V1and ground.
Voltage: Battery voltage
OK
cNG
Check harness for open or
short between fuse and
security ind.
CHECK INDICATOR LAMP.
OK
cNG
Repair harness.
CHECK NATS IMMU FUNCTION.
1. Connect NATS IMMU connector.
2. Disconnect security ind. connector.
3. Check continuity between NATS IMMU
terminal
V6and ground.
Continuity should exist intermit-
tently.
OK
cNG
NATS IMMU is malfunc-
tioning. Replace IMMU.
Perform initializa-
tion with CON-
SULT-II.
For the operation
of initialization,
refer to ªCON-
SULT-II operation
manual NATSº.
Check harness for open or short between
security indicator and NATS IMMU.
SEL931UA
SEL164X
.
.
.
.
.
.
.
.
.
NATS (Nissan Anti-Theft System)
Trouble Diagnoses (Cont'd)
EL-1182

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
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingCAÐABÐTappet
noiseValve clearanceMA section
(ªAdjusting
Intake &
Exhaust
Valve
Clearanceº,
ªENGINE
MAINTE-
NANCEº)
Rattle C A Ð A B CCamshaft
bearing
noiseCamshaft bushing clearance
Camshaft runoutEM-1032,
1032
Crankshaft
pulley
Cylinder
block (Side
of engine)
Oil panSlap or
knockÐAÐB BÐPiston pin
noisePiston and piston pin clear-
ance
Connecting rod bushing
clearanceEM-1072,
1074
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-1076,
1073, 1073,
1074
Knock A B C B B BConnecting
rod bearing
noiseConnecting rod bushing
clearance (Small end)
Connecting rod bearing
clearance (Big end)EM-1074,
1078
Knock A B Ð A B CMain bear-
ing noiseMain bearing oil clearance
Crankshaft runoutEM-1079,
1077
Front of
engine
Timing gear
coverTapping or
tickingAAÐBBBTiming gear
noiseTiming gear backlash EM-1042
Front of
engineSqueaking
or fizzingABÐBÐCOther 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-1009

1. Warm up engine.
2. Turn ignition switch OFF.
3.
Using CONSULT-II, make sure no error codes are indicated for
self-diagnosis items. Refer to EC section, ªFuel Pressure
Releaseº.
+Do not disconnect CONSULT-II until the end of this opera-
tion; it will be used to check engine rpm and for error detec-
tion at the end of this operation.
4. Disconnect the negative battery terminal.
5. Remove the following parts.
+Intercooler cover
+Intercooler
+Throttle body
+Rocker cover
6. To prevent fuel from being injected during inspection, remove
fuel injection pump fuse [ENG CONT (20A)] from fuse box on
the right side of engine compartment.
7. Remove glow plugs from all the cylinders.
+Before removal, clean the surrounding area to prevent
entry of any foreign materials into the engine.
+Carefully remove glow plugs to prevent any damage or
breakage.
+
Handle with care to avoid applying any shock to glow plugs.
8. Install adapter (SST) to installation holes of glow plugs and
connect compression gauge for diesel engine.
:15-19Nzm (1.5 - 2.0 kg-m, 11 - 14 ft-lb)
9. Connect battery negative terminal.
10. Set the ignition switch to ªSTARTº and crank. When gauge
pointer stabilizes, read compression pressure and engine
rpm. Repeat the above steps for each cylinder.
+Always use a fully-charged battery to obtain specified
engine speed.
Unit: kPa (bar, kg/cm2, psi)/rpm
Standard MinimumDifference limit between
cylinders
2,942 (29.42, 30.0, 427)/
2002,452 (24.52, 25.0, 356)/
200294 (2.94, 3.0, 43)/200
+When engine rpm is out of the specified range, check the
specific gravity of battery liquid. Measure again under cor-
rected conditions.
+If engine rpm exceeds the limit, check valve clearance and
combustion chamber components (valves, valve seats, cyl-
inder head gaskets, piston rings, pistons, cylinder bores, cyl-
inder block upper and lower surfaces) and measure again.
11. Complete this operation as follows:
a. Turn the ignition switch to ªOFFº.
b. Disconnect battery negative terminal.
c. Replace glow plug oil seals and install glow plugs.
d. Install fuel injection pump fuse [ENG CONT (20A)].
e. Connect battery negative terminal.
f. Using CONSULT-II make sure no error code is indicated for
items of self-diagnosis. Refer to EC section, ªTrouble Diag-
nosis Ð Indexº.
SEM318G
SEM334G
MEASUREMENT OF COMPRESSION PRESSURE
TROUBLESHOOTINGZD
EM-1010

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.
+Check 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.)
+Ask the customer if he/she always runs the vehicle in idle
engine speed to cool the oil down after driving.
+Replace the turbocharger assembly when any malfunction is
found after unit inspections specified in the table below.
+If 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.n
nn
Carbon is accumulated.n
jj
Friction with housing.nj
j
Blades are bent or broken.
Compressor wheelInside the air inlet is seriously contami-
nated by oil.jj
Friction with housing.njj
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.nnj
The rotor shaft sometimes does not
rotate by your fingertips.
There is too much play in the bearing.nnjn
Oil return portCarbon or sludge is accumulated in the
waste oil hole.n
nn
Operation of VNT control actuator+The actuator does not operate
smoothly when vacuum pressure is
gradually applied.
+Stroke amount is not in compliance
with the vacuum pressure.j
: Large possibility
j: Medium possibility
n: Small possibility
INSTALLATION
1. Install catalyst.
:29-39Nzm (2.9 - 3.3 kg-m, 21 - 23 ft-lb)
Place the protruding area of the gasket between the turbo-
charger and the exhaust outlet upwards, and install the lipped
side to the turbocharger side. Refer to the figure, EM-1014.
2. Install in the reverse order of removal.
CATALYST AND TURBOCHARGERZD
Inspection (Cont'd)
EM-1017

3. Remove injection tube and injection nozzle assembly. Refer
to EC section, ªInjection Tube and Injection Nozzleº in
ªBASIC SERVICE PROCEDUREº.
4. Remove the camshaft.
+Place distinguishing marks on the right and left sides with
paint.
+Loosen and remove the installation bolt in reverse order
shown in the figure.
5. Remove the adjusting shim and valve lifter.
+Remove by taking notice of the installation position, and
place outside engine in order to prevent confusion.
Inspection
VISUAL CHECK OF CAMSHAFT
+Check the camshaft for one sided wear or scratches.
+Replace the camshaft if there are abnormalities.
CAMSHAFT RUNOUT
+Prepare V-block on a flat surface and secure camshaft jour-
nals No. 1 and No. 5.
+Set the dial gauge vertically on journal No. 3.
+Rotate camshaft in one direction by hand, then read needle
movement on dial indicator.
Camshaft bend value is 1/2 of needle movement.
Limit: 0.02 mm (0.0008 in)
HEIGHT OF CAM NOSE
Measure by using a micrometer.
Standard:
Intake
40.488 0.02 mm (1.5940 0.0008 in)
Exhaust
40.850 0.02 mm (1.6083 0.0008 in)
CAMSHAFT OIL CLEARANCE
Measure by using a micrometer.
Cam journal outer diameter:
Standard
29.931 - 29.955 mm (1.1784 - 1.1793 in) dia.
FEM012
FEM013
FEM014
FEM015
CAMSHAFTZD
Removal (Cont'd)
EM-1032

GradePiston crown
depressionGasket thick-
ness*1No. of notches
1Less than þ0.078
(þ0.0031)*20.65 (0.0256) 1
2More than þ0.078
(þ0.0031)*30.70 (0.0276) 2
*1: Thickness of gasket tightened with head bolts
*2: Indicates values such as þ0.080 mm (þ0.0031 in).
*3: Indicates values such as þ0.075 mm (þ0.0030 in).
2. Install idler gear and idler shaft.
+Check that the counter marks with cam gear, ªAAº and ªBBº,
are located on the front side of the engine.
Refer to EM- 1053.
CAUTION:
Since idler gear cannot be installed or removed with cylin-
der head assembly mounted on the engine because of inter-
ference with gear case, make sure that there are no reverse
installations or uninstalled parts.
3. Install cylinder head assembly.
1) Attach gasket onto the rear of gear case.
2) Install O-ring to the rear of gear case.
3) Align cylinder head assembly with dowel pin of cylinder block
and install.
CAUTION:
+Make sure the O-ring does not fall off. Be careful not to
drop the O-ring.
+Do not damage gasket located at the front.
4. Position cylinder head assembly close to the rear of the gear
case.
1) Install cylinder head bolts to the front and rear of cylinder
head respectively, and tighten to the specified torque.
:40-49Nzm (4.0 - 5.0 kg-m, 29 - 36 ft-lb)
2) Loosen cylinder head bolts completely.
3) Install gear case mounting bolts to 2 positions shown by
arrows in the figure, and tighten to the specified torque.
: Less than 9.8 Nzm (1.0 kg-m, 7 in-lb)
5. Tighten cylinder head bolts in the order indicated in the fig-
ure.
1) Apply engine oil to installation bolt threads and washers.
2) Tighten bolts to 98 to 102 Nzm (10.0 to 10.5 kg-m, 73 to 75
ft-lb).
3) Loosen bolts completely until the torque becomes 0 Nzm(0
kg-m, 0 in-lb).
CAUTION:
For procedure 3), loosen bolts in the reverse order as indi-
cated in the figure.
4) Tighten bolts to 40 to 44 Nzm (4.0 to 4.5 kg-m, 29 to 32 ft-
lb).
FEM061
FEM062
FEM055
CYLINDER HEADZD
Installation (Cont'd)
EM-1056

5)Tighten bolts at the angle of 90 to 95É (target is 95É). (Angle
tightening)
6) Once again, tighten bolts at the angle of 90 to 95É (target is
95É). (Angle tightening)
CAUTION:
Perform the following procedure to check turning angle of
angle tightening, and do not judge by visual check.
ANGLE TIGHTENING PROCEDURE
With protractor
+Make counter marks on the bolt head of cylinder head and
cylinder head surface with paint, and check the turning angle.
With angle wrench (SST)
+Check the turning angle using angle indicator of angle
wrench.
6. Loosen gear case mounting bolts which were tightened in 3)
of procedure 4, retighten them to the specified torque.
7. Install glow plug.
+2 different types (manufacturers) of glow plugs are provided
in parallel. (Refer to the figure for identification.)
+Do not install 2 different types of glow plugs in the engine.
Make sure that the same glow plugs are installed.
+Using reamer, remove the carbon adhering to the installation
hole of glow plug, and install glow plug.
FEM063
FEM064
CYLINDER HEADZD
Installation (Cont'd)
EM-1057

For details, Refer to EM-1088, ªValve Seatº in ªSERVICE DATA
AND SPECIFICATIONS (SDS)º.
VALVE SPRING RIGHT ANGLE
Position a straightedge to valve spring, turn the spring, and mea-
sure the maximum clearance value between top surface of
spring and the straightedge
Limit: 2.4 mm (0.0945 in)
VALVE SPRING FREE LENGTH AND COMPRESSIVE
LOAD
Using valve spring tester, check the following.
Free length: 55.43 mm (2.1823 in)
Installation height: 40.8 mm (1.6063 in)
Installation load: 180 - 206 N (18.4 - 21.0 kg, 40.6 -
46.3 lb)
Height at valve open: 32.3 mm (1.2717 in)
Load at valve open: 336 - 372 N (34.3 - 37.9 kg, 75.6 -
83.6 lb)
Assembly
1. Install valve guides, referring to EM-1061, ªVALVE SEAT
REPLACEMENTº.
2. Install valve seats, referring to EM-1061, ªVALVE SEAT
CONTACTº.
3. Using valve oil seal drift (SST), install valve oil seals refer-
ring to the dimension shown in the figure.
+The figure shows the dimension before valve spring seats
are installed.
4. Install valve spring seats.
5. Install valves.
+Install the valves with bigger openings to intake valve side.
+Note that valve layout here is different from that of conven-
tional the engine.
FEM076
FEM077
FEM078
FEM079
CYLINDER HEADZD
Inspection (Cont'd)
EM-1062

21. Hook hoists to slingers to secure the position.
22. Remove installation nuts for left and right engine mount insu-
lators.
23. While adjusting position frequently, hoist and remove the
engine.
CAUTION:
+While performing operation, check that all necessary
wires and pipes are disconnected.
+Avoid interference with parts on the vehicle.
Installation
Install the engine in the reverse order of the removal procedure.
+Keep each mount insulator from oil adherence and damage.
+As for identification and installation direction of left and right
insulators, refer to stamping on the top surface. Refer to
EM-1064.
+As for a location with positioning pin, insert the pin correctly
to the hole of mating part.
+While keeping each mount insulator free from twisting,
tighten mounting bolts and nuts for the engine mount.
Inspection
+Before starting the engine, check coolant level and grease
amount, and if necessary, refill them to the specified level.
+Start the engine, and check that there is no abnormal noise
or vibration.
+Warm up the engine to the sufficient temperature, and check
that there is no leakage of coolant, greases, fuel, or exhaust
gas.
SEM363G
ENGINE REMOVALZD
Removal (Cont'd)
EM-1066