spark plugs TOYOTA T100 1996 Factory Service Manual

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P08488
Back Front
− MAINTENANCEENGINE
MA−5
40 Author: Date:
1996 TOYOTA T100 (RM449U)
ENGINE
INSPECTION
HINT:
Inspect these items when the engine is cold.
1. (5VZ−FE ENGINE)
REPLACE TIMING BELT
(See page EM−11 )
2. INSPECT DRIVE BELTS
GENERATOR:
(3RZ−FE: See page CH−2)
(5VZ−FE: See page CH−1)
PS:
(3RZ−FE: See page SR−3)
(5VZ−FE: See page SR−3)
A/C:
(3RZ−FE: See page AC−14)
(5VZ−FE: See page AC−14)
3. REPLACE SPARK PLUGS
(3RZ−FE: See page IG−1)
(5VZ−FE: See page IG−1)
4. INSPECT AIR FILTER
(a) Visually check that the air cleaner element is not exces-
sively dirty, damaged or oily.
HINT:
Oiliness may indicate a stuck PCV valve.
If necessary, replace the air cleaner element.
(b) Clean the element with compressed air.
First blow from back side thoroughly, then blow off the
front side of the element.
5. REPLACE AIR FILTER
Replace the used air cleaner element with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER
(3RZ−FE: See page LU−3)
(5VZ−FE: See page LU−3)
7. REPLACE ENGINE COOLANT
(3RZ−FE: See page CO−2)
(5VZ−FE: See page CO−
2)
8. CALIFORNIA, MASSACHUSETTS, MAIN, VERMONT,
RHODE ISLAND and NEW HAMPSHIRE:
INSPECT CHARCOAL CANISTER
(3RZ−FE: See page EC−5)
(5VZ−FE: See page EC−5)
9. REPLACE GASKET IN FUEL TANK CAP
(3RZ−FE: See page EC−5)
(5VZ−FE: See page EC−5)

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From BatteryIgnition Coil
Spark Plug
IGC1
IGC2
IGC3
GND TA C IGT1
IGT2
IGT3
IGF
To Tachometer ECM G
NE
Camshaft
Position
Sensor
Crankshaft
Position
Sensor
Various
SensorNo.1 Cylinder
No.4 Cylinder
No.5 Cylinder
No.2 Cylinder
No.3 Cylinder
No.6 Cylinder
− DIAGNOSTICSENGINE (5VZ−FE)
DI−235
1996 TOYOTA T100 (RM449U)
DTC P1300 Igniter Circuit Malfunction
CIRCUIT DESCRIPTION
A DIS (Direct Ignition System) has been adopted. The DIS improves the ignition timing accuracy, reduces
high−voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor.
The DIS is a 2−cylinder simultaneous ignition system which ignites 2 cylinders simultaneously with one igni-
tion coil. In the 2−cylinder simultaneous ignition system, each of the 2 spark plugs is connected to the end
of the secondary winding. High voltage generated in the secondary winding is applied directly to the spark
plugs. The sparks of the 2 spark plugs pass simultaneously from the center electrode to the ground elec-
trode.
The ECM determines ignition timing end outputs the ignition signals (IGT) for each cylinder. Based on IGT
signals, the igniter controls the primary ignition signals (IGC) for all ignition coils. At the same time, the igniter
also sends an ignition confirmation signal (IGF) as a fail−safe measure to the ECM.
DTC No.DTC Detecting ConditionTrouble Area
P1300
No IGF signal to ECM for 6 consecutively IGT signals during
engine runningOpen or short in IGF or IGT circuit from igniter to ECM
Igniter
ECM
DI0V5−01

Downloaded from www.Manualslib.com manuals search engine EM06R−03
P15972
Compression Gauge
− ENGINE MECHANICAL (3RZ−FE)COMPRESSION
EM−3
718 Author: Date:
1996 TOYOTA T100 (RM449U)
COMPRESSION
INSPECTION
HINT:
If there is lack of power, excessive oil consumption or poor fuel
economy, measure the compression pressure.
1. WARM UP AND STOP ENGINE
2. REMOVE INTAKE AIR CONNECTOR
(See page EM−65)
3. DISCONNECT HIGH−TENSION CORDS FROM
SPARK PLUGS
NOTICE:
Pulling on or bending the cords may damage the conductor
inside.
4. REMOVE SPARK PLUGS
5. CHECK CYLINDER COMPRESSION PRESSURE
(a) Insert a compression gauge into the spark plug hole.
(b) Fully open the throttle.
(c) While cranking the engine, measure the compression
pressure.
HINT:
Always use a fully charged battery to obtain engine speed of
250 rpm or more.
(d) Repeat steps (a) through (c) for each cylinder.
NOTICE:
This measurement must be done in as short a time as pos-
sible.
Compression pressure:
1,230 kPa (12.5 kgf/cm
2, 178 psi) or more
Minimum pressure:
880 kPa (9.0 kgf/cm
2, 127 psi)
Difference between each cylinder:
98 kPa (1.0 kgf/cm
2, 14 psi) or less
(e) If the cylinder compression in one or more cylinders is low,
pour a small amount of engine oil into the cylinder through
the spark plug hole and repeat steps (a) through (c) for
cylinders with low compression.
If adding oil helps the compression, chances are
that the piston rings and/or cylinder bore are worn
or damage.
If pressure stays low, a valve may be sticking or
seating is improper, or there may be leakage past
the gasket.

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− ENGINE MECHANICAL (3RZ−FE)COMPRESSION
719 Author: Date:
1996 TOYOTA T100 (RM449U)
6. REINSTALL SPARK PLUGS
Torque:19 N·m (200 kgf·cm, 14 ft·lbf)
7. REINSTALL HIGH−TENSION CORDS TO SPARK
PLUGS
8. REINSTALL AIR INTAKE CONNECTOR
(See page EM−70)

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P24401A03713
P14695
− ENGINE MECHANICAL (3RZ−FE)VALVE CLEARANCE
EM−5
720 Author: Date:
1996 TOYOTA T100 (RM449U)
VALVE CLEARANCE
INSPECTION
HINT:
Inspect and adjust the valve clearance when the engine is cold.
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP, MAF METER AND RES-
ONATOR (See page EM−65)
3. REMOVE NO.1 AND NO.2 PCV HOSES
4. DISCONNECT HIGH−TENSION CORDS FROM SPARK
PLUGS
NOTICE:
Pulling on or bending the cords may damage the conductor
inside.
5. REMOVE THROTTLE BODY (See page MF−28)
6. DISCONNECT ENGINE WIRE
(a) Disconnect these connectors:
w/ A/C:
A/C compressor connector
Oil pressure sensor connector
ECT sensor connector
(b) Disconnect the 5 engine wire clamps and engine wire.
7. REMOVE CYLINDER HEAD COVER
Remove the 10 bolts, cylinder head cover and gasket.
8. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley clockwise and align its groove
with the ”0” mark on the timing chain cover.

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EM−10
− ENGINE MECHANICAL (3RZ−FE)VALVE CLEARANCE
725 Author: Date:
1996 TOYOTA T100 (RM449U)
11. REINSTALL CYLINDER HEAD COVER
(a) Install the gasket to the cylinder head cover.
(b) Install the cylinder head cover with the 10 bolts.
12. RECONNECT ENGINE WIRE
(a) Connect the 5 engine wire clamps.
(b) Connect these connectors:
ECT sensor connector
Oil pressure sensor connector
w/ A/C:
A/C compressor connector
13. REINSTALL THROTTLE BODY (See page MF−30)
14. REINSTALL HIGH−TENSION CORDS TO SPARK
PLUGS
15. REINSTALL NO.1 AND NO.2 PCV HOSES
16. REINSTALL AIR INTAKE CONNECTOR (See page
EM−70)
17. REFILL WITH ENGINE COOLANT
18. CHECK IGNITION TIMING

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P14695
A01399
Dot Mark
P14636
P15751A03790
EM−32
− ENGINE MECHANICAL (3RZ−FE)CYLINDER HEAD
1996 TOYOTA T100 (RM449U)
24. REMOVE CYLINDER HEAD COVER
Remove the 10 bolts, cylinder head cover and gasket.
25. REMOVE SPARK PLUGS
26. SET NO.1 CYLINDER TO TDC/COMPRESSION
(a) Turn the crankshaft pulley clockwise and align its groove
with the ”0” mark on the timing chain cover.
(b) Check that the timing marks (1 and 2 dots) of the camshaft
drive and driven gears are in straight line on the cylinder
head surface as shown in the illustration. If not, turn the
crankshaft 1 revolution (360°) and align the marks as
above.
27. REMOVE CHAIN TENSIONER
Remove the 2 nuts, chain tensioner and gasket.
28. REMOVE CAMSHAFT TIMING GEAR
(a) Remove the 2 semi−circular plugs.
(b) Place the matchmarks on the camshaft timing gear and
No.1 timing chain.

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A01597
P14695
A01399
Dot Mark
− ENGINE MECHANICAL (3RZ−FE)CYLINDER HEAD
EM−55
1996 TOYOTA T100 (RM449U)
8. SET CHAIN TENSIONER
Turn the crankshaft to the left so that the hook of the chain ten-
sioner is released from the pin of the plunger, causing the plung-
er to spring out and the slipper to be pushed into the chain.
HINT:
If the plunger does not spring out, press the slipper into the
chain tensioner with a screwdriver or your finger so that the
hook is released and the plunger springs out.
9. CHECK VALVE TIMING
(a) Turn the crankshaft pulley, and align its groove with the
timing mark ”0” of the timing chain cover.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that the timing marks (1 and 2 dots) of the camshaft
drive and driven gears are in straight line on the cylinder
head surface as shown in the illustration.
If not, turn the crankshaft 1 revolution (360°) and align the
marks as above.
10. CHECK AND ADJUST VALVE CLEARANCE (See page
EM−5)
Turn the camshaft and position the cam lobe upward and check
and adjust the valve clearance.
Valve clearance (Cold):
Intake
0.15 − 0.25 mm (0.006 − 0.010 in.)
Exhaust
0.25 − 0.35 mm (0.010 − 0.014 in.)
11. INSTALL SPARK PLUGS
Using a 16 mm plug wrench, install the spark plug.
Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)

Downloaded from www.Manualslib.com manuals search engine EM06C−05
P21054
EM−2
− ENGINE MECHANICAL (5VZ−FE)COMPRESSION
821 Author: Date:
1996 TOYOTA T100 (RM449U)
COMPRESSION
INSPECTION
HINT:
If there is lack of power, excessive oil consumption or poor fuel
economy, measure the compression pressure.
1. WARM UP AND STOP ENGINE
Allow the engine to warm up to normal operating temperature.
2. REMOVE HIGH−TENSION CORDS WITH IGNITION
COILS (See page IG−1)
3. REMOVE SPARK PLUGS
4. CHECK CYLINDER COMPRESSION PRESSURE
(a) Insert a compression gauge into the spark plug hole.
(b) Fully open the throttle.
(c) While cranking the engine, measure the compression
pressure.
HINT:
Always use a fully charged battery to obtain engine speed of
250 rpm or more.
(d) Repeat steps (a) through (c) for each cylinder.
NOTICE:
This measurement must be done in as short a time as pos-
sible.
Compression pressure:
1,200 kPa (12.2 kgf/cm
2, 174 psi) or more
Minimum pressure:
1,000 kPa (10.2 kgf/cm
2, 145 psi)
Difference between each cylinder:
100 kPa (1.0 kgf/cm
2, 15 psi) or less
(e) If the cylinder compression in 1 or more cylinders is low,
pour a small amount of engine oil into the cylinder through
the spark plug hole and repeat steps (a) through (c) for
cylinders with low compression.
If adding oil helps the compression, it is likely that
the piston rings and/or cylinder bore are worn or
damaged.
If pressure stays low, a valve may be sticking or
seating is improper, or there may be leakage past
the gasket.
5. REINSTALL SPARK PLUGS

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EM−30
− ENGINE MECHANICAL (5VZ−FE)CYLINDER HEAD
1996 TOYOTA T100 (RM449U)
REMOVAL
1. 4WD:
REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT
3. REMOVE FRONT EXHAUST PIPE (See page EM−108)
4. REMOVE AIR CLEANER CAP, MAF METER AND RES-
ONATOR
5. DISCONNECT THESE CABLES:
(a) w/ Cruise control:
Cruise control actuator cable
(b) Accelerator cable
(c) A/T:
Throttle cable
6. DISCONNECT HEATER HOSE
7. DISCONNECT UPPER RADIATOR HOSE
8. REMOVE DRIVE BELT FOR PS PUMP
(a) Stretch the belt and loosen the fan pulley mounting nuts.
9. w/ A/C:
REMOVE DRIVE BELT FOR A/C COMPRESSOR
10. REMOVE DRIVE BELT FOR GENERATOR
11. REMOVE NO. 2 FAN SHROUD
12. REMOVE FAN WITH FLUID COUPLING AND FAN PUL-
LEYS
13. DISCONNECT PS PUMP FROM ENGINE
HINT:
Put aside the pump, and suspend it.
14. w/ A/C:
DISCONNECT A/C COMPRESSOR FROM ENGINE
HINT:
Put aside the compressor, and suspend it.
15. w/ A/C:
REMOVE A/C COMPRESSOR BRACKET
16. REMOVE HIGH−TENSION CORDS WITH IGNITION
COILS
17. REMOVE SPARK PLUGS
18. REMOVE TIMING BELT AND CAMSHAFT TIMING
PULLEYS (See page EM−13)
19. REMOVE TIMING BELT IDLER NO. 2 (See page
EM−13)
20. REMOVE GENERATOR