1996 TOYOTA T100 sensor

Downloaded from www.Manualslib.com manuals search engine EC031−04
P21187
P21181
− EMISSION CONTROL (5VZ−FE)THREE−WAY CATALYTIC CONVERTER (TWC)
SYSTEMEC−13
1996 TOYOTA T100 (RM449U)
REPLACEMENT
1. REMOVE CENTER EXHAUST PIPE
(a) 2WD:
Disconnect the 2 rings from the support bracket.
(b) Remove the 2 nuts and gasket, and disconnect the
heated oxygen sensor (bank 1 sensor 2).
Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
HINT:
Use a new gasket.
(c) Remove the 4 bolts, TWC joint retainer, center exhaust
pipe and 2 gasket.
Torque: 48 N·m (490 kgf·cm, 35 ft·lbf)
2. REINSTALL CENTER EXHAUST PIPE
HINT:
Place 2 new gaskets on the front exhaust and tail pipes, and
temporarily install the center exhaust pipe.

Downloaded from www.Manualslib.com manuals search engine MF – MFI SYSTEM (3RZ-FE)

MFI SYSTEM MF-1
FUEL PUMP MF-5
FUEL PRESSURE REGULATOR MF-13
INJECTOR MF-16
FUEL TANK AND LINE MF-23
THROTTLE BODY MF-25
IDLE AIR CONTROL (IAC) VALVE MF-31
MASS AIR FLOW (MAF) METER MF-36
EFI MAIN RELAY MF-40
CIRCUIT OPENING RELAY MF-41
VSV FOR EVAPORATIVE EMISSION
(EVAP) MF-43
VSV FOR EXHAUST GAS
RECIRCULATION (EGR) MF-44
ENGINE COOLANT TEMPERATURE
(ECT) SENSOR MF-45
INTAKE AIR TEMPERATURE (IAT)
SENSOR MF-46
KNOCK SENSOR MF-47
EXHAUST GAS RECIRCULATION
(EGR) GAS TEMPERATURE SENSOR MF-48
HEATED OXYGEN SENSOR MF-49
ENGINE CONTROL MODULE (ECM) MF-50
FUEL CUT RPM MF-54

Downloaded from www.Manualslib.com manuals search engine SF0AF−04
− MFI (3RZ−FE)MFI SYSTEM
MF−1
953 Author: Date:
1996 TOYOTA T100 (RM449U)
MFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (−) TERMINAL CABLE FROM BAT-
TERY
HINT:
Any diagnostic trouble code retained by the ECM will be erased
when the battery negative (−) terminal cable is removed from
the battery.
Therefore, if necessary, read the diagnostic trouble code(s) be-
fore removing the negative (−) terminal cable from the battery.
2. DO NOT SMOKE OR WORK NEAR AN OPEN FLAME
WHEN WORKING ON FUEL SYSTEM
3. KEEP GASOLINE AWAY FROM RUBBER OR LEATH-
ER PARTS
4. MAINTENANCE PRECAUTIONS
(a) Precaution when the connecting gauge.
Use battery as the power source for the timing light, etc.
(b) In the event of engine misfire, these precautions should
be taken.
(1) Check proper connection of battery terminals, etc.
(2) Handle high−tension cords carefully.
(3) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(4) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(c) Precautions when the handling heated oxygen sensors.
(1) Do not allow oxygen sensor to drop or hit against an
object.
(2) Do not allow the sensor to come into contact with
water.
If Vehicle is Equipped with Mobile Radio System (ham, cb, etc.)
If the vehicle is equipped with a mobile communication system,
refer to the precaution in the IN section.
5. AIR INDUCTION SYSTEM
(a) Separation of the engine oil dipstick, oil filler cap, PCV
hose, etc. may cause the engine to run out of tune.
(b) Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder
head will cause air suction and cause the engine to run
out of tune.

Downloaded from www.Manualslib.com manuals search engine SF1QI−01
MF−18
− MFI (3RZ−FE)INJECTOR
1996 TOYOTA T100 (RM449U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP, MAF METER AND RES-
ONATOR
(a) Disconnect the MAF meter connector, IAT sensor con-
nector and wire clamp.
(b) Loosen the air cleaner hose clamp.
(c) Loosen the 4 clips, and remove the air cleaner cap, MAF
meter and resonator.
3. M/T:
DISCONNECT ACCELERATOR CABLE FROM
THROTTLE BODY
4. A/T:
DISCONNECT THROTTLE AND ACCELERATOR
CABLES FROM THROTTLE BODY
5. REMOVE INTAKE AIR CONNECTOR
(a) Disconnect the 2 air hoses.
(b) Remove the 2 bolts, hose clamp and intake air connector.
6. REMOVE NO. 1 AND NO. 2 PCV HOSES
7. DISCONNECT HIGH−TENSION CORDS FROM SPARK
PLUGS
NOTICE:
Pulling on or bending the cords may damage the conductor
inside.
Disconnect the distributor connector.
8. REMOVE THROTTLE BODY (See page MF−28)
9. REMOVE DELIVERY PIPE AND INJECTORS

Downloaded from www.Manualslib.com manuals search engine B02580
SF1QK−01
− MFI (3RZ−FE)THROTTLE BODY
MF−25
977 Author: Date:
1996 TOYOTA T100 (RM449U)
THROTTLE BODY
ON−VEHICLE INSPECTION
1. INSPECT THROTTLE BODY
(a) Check that the throttle linkage moves smoothly.
(b) Check the vacuum at each port.
(1) Start the engine.
(2) Check the vacuum with your finger.
Port nameAt idleAt 3,500 rpm
PNo vacuumVacuum
ENo vacuumVacuum
RNo vacuumVacuum
2. INSPECT THROTTLE POSITION SENSOR
(a) Disconnect the sensor connector.
(b) Apply vacuum to the throttle opener.
(c) Using an ohmmeter, measure the resistance between
each terminal.
Throttle valve
conditionBetween
terminalsResistance
Fully closedVTA − E20.2 − 5.7 kΩ
Fully closedIDL − E22.3 kΩ or less
OpenIDL − E2Infinity
Fully openVTA − E22.0 − 10.2 kΩ
−VC − E22.5 − 5.9 kΩ
(d) Connect the sensor connector.
3. INSPECT THROTTLE OPENER
(a) Warm up engine
Allow the engine to warm up to normal operating tempera-
ture.
(b) Connect TOYOTA hand−held tester or OBD II scan tool.
(c) Check idle speed
Idle speed: 700 rpm
(d) Disconnect the vacuum hose from the throttle opener,
and plug the hose end.

Downloaded from www.Manualslib.com manuals search engine SF0B2−02
P24769
P21655
P21654
MF−28
− MFI (3RZ−FE)THROTTLE BODY
1996 TOYOTA T100 (RM449U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP, MAF METER AND
RESONATOR
(a) Disconnect the MAF meter connector, IAT sensor con-
nector and wire clamp.
(b) Loosen the air cleaner hose clamp.
(c) Loosen the 4 clips, and remove the air cleaner cap, MAF
meter and resonator.
3. M/T:
DISCONNECT ACCELERATOR CABLE FROM
THROTTLE BODY
4. A/T:
DISCONNECT ACCELERATOR AND THROTTLE
CABLES FROM THROTTLE BODY
5. REMOVE INTAKE AIR CONNECTOR
(a) Disconnect the 2 air hoses.
(b) Remove the 2 bolts, hose clamp and intake air connector.
6. REMOVE NO.1 AND NO.2 PCV HOSES
7. REMOVE THROTTLE BODY
(a) Disconnect the throttle position sensor connector.
(b) Disconnect the IAC valve connector.
(c) Disconnect the EVAP hose.
(d) Disconnect the 3 vacuum hoses.
(e) Remove the 2 bolts, 2 nuts and disconnect the throttle
body from the air intake chamber.
Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
(f) Remove the throttle body gasket.
HINT:
At the time assembly please refer to the following items.
Install the throttle body with a new gasket.
(g) Disconnect the No.1 and No.2 water bypass hoses from
the throttle body, and remove the throttle body.

Downloaded from www.Manualslib.com manuals search engine SF0B3−03
P21653
− MFI (3RZ−FE)THROTTLE BODY
MF−29
1996 TOYOTA T100 (RM449U)
INSPECTION
1. CLEAN THROTTLE BODY
(a) Using a soft brush and carburetor cleaner, clean the cast
parts.
(b) Using compressed air, clean all the passages and aper-
tures.
NOTICE:
To prevent deterioration, do not clean the throttle position
sensor and IAC valve.
2. INSPECT THROTTLE VALVE
(a) Apply vacuum to the throttle opener.
(b) Check that there is no clearance between the throttle stop
screw and throttle lever when the closed throttle position.
3. INSPECT THROTTLE POSITION SENSOR
(a) Apply vacuum to the throttle opener.
(b) Insert a thickness gauge between the throttle stop screw
and stop lever.
(c) Using an ohmmeter, measure the resistance between
each terminal.
Clearance between lever
and stop screwBetween terminalsResistance
0 mm (0 in.)VTA − E20.2 − 5.7 kΩ
0.50 mm (0.020 in.)IDL − E22.3 kΩ or less
0.75 mm (0.030 in.)IDL − E2Infinity
Throttle valve fully openVTA − E22.0 − 10.2 kΩ
−VC − E22.5 − 5.9 kΩ

Downloaded from www.Manualslib.com manuals search engine SF1QJ−01
− MFI (3RZ−FE)MASS AIR FLOW (MAF) METER
MF−37
1996 TOYOTA T100 (RM449U)
REMOVAL
1. REMOVE AIR CLEANER CAP AND MAF METER
(a) Disconnect the MAF meter connector, IAT sensor con-
nector and wire clamp.
(b) Loosen the air cleaner hose clamp.
(c) Loosen the 4 clips, and remove the air cleaner cap and
MAF meter.
2. REMOVE MAF METER FROM AIR CLEANER CAP
(a) Remove the 4 nuts, MAF meter and gasket.
(b) Remove the IAT sensor from air cleaner cap.