TOYOTA T100 1996 Factory Service Manual

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SF0BI−03
P01630
− MFI (3RZ−FE)KNOCK SENSOR
MF−47
999 Author: Date:
1996 TOYOTA T100 (RM449U)
KNOCK SENSOR
INSPECTION
1. REMOVE KNOCK SENSOR
(a) Disconnect the knock sensor connector.
(b) Using SST, remove the knock sensor.
SST 09816−30010
2. INSPECT KNOCK SENSOR
Using an ohmmeter, check that there is no continuity between
the terminal and body.
If there is continuity, replace the sensor.
3. REINSTALL KNOCK SENSOR
(a) Using SST, install the knock sensor.
SST 09816−30010
Torque: 44 N·m (450 kgf·cm, 33 ft·lbf)
(b) Connect the knock sensor connector.

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SF0BK−02
FI6320
Ohmmeter MF−48
− MFI (3RZ−FE)EXHAUST GAS RECIRCULATION (EGR) GAS
TEMPERATURE SENSOR
1000 Author: Date:
1996 TOYOTA T100 (RM449U)
EXHAUST GAS RECIRCULATION
(EGR) GAS TEMPERATURE
SENSOR
INSPECTION
1. REMOVE EGR GAS TEMPERATURE SENSOR
2. INSPECT EGR GAS TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance:
64 − 97 kΩ at 50°C (122°F)
11 − 16 kΩ at 100°C (212°F)
2 − 4 kΩ at 150°C (302°F)
If the resistance is not as specified, replace the sensor.
3. REINSTALL EGR GAS TEMPERATURE SENSOR

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SF0BL−02
− MFI (3RZ−FE)HEATED OXYGEN SENSOR
MF−49
1001 Author: Date:
1996 TOYOTA T100 (RM449U)
HEATED OXYGEN SENSOR
INSPECTION
INSPECT HEATER RESISTANCE OF HEATED
OXYGEN SENSORS
(a) Disconnect the heated oxygen sensor connectors.
(b) Using an ohmmeter, measure the resistance between ter-
minals +B and HT.
Resistance:
Bank 1 Sensor 1: 5 − 7 Ω at 20°C (68°F)
Bank 1 Sensor 2: 11 − 16 Ω at 20°C (68°F)
If resistance is not as specified, replace the heated oxygen
sensors.
(c) Reconnect the heated oxygen sensor connectors.

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P21637
MF−50
− MFI (3RZ−FE)ENGINE CONTROL MODULE (ECM)
1002 Author: Date:
1996 TOYOTA T100 (RM449U)
ENGINE CONTROL MODULE (ECM)
COMPONENTS

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P15739
− MFI (3RZ−FE)ENGINE CONTROL MODULE (ECM)
MF−51
1996 TOYOTA T100 (RM449U)
REMOVAL
1. REMOVE FRONT DOOR SCUFF PLATE
Remove the 4 screws and front scuff plate.
2. REMOVE COWL SIDE TRIM
Remove the clip and cowl side trim.
3. REMOVE ECM
(a) Disconnect the 4 ECM connectors.
(b) Remove the 3 bolts and ECM.

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MF−52
− MFI (3RZ−FE)ENGINE CONTROL MODULE (ECM)
1996 TOYOTA T100 (RM449U)
INSPECTION
(See page DI−17)

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− MFI (3RZ−FE)ENGINE CONTROL MODULE (ECM)
MF−53
1996 TOYOTA T100 (RM449U)
INSTALLATION
Installation is in the reverse order of removal (See page MF−51).

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P24764
MF−54
− MFI (3RZ−FE)FUEL CUT RPM
1006 Author: Date:
1996 TOYOTA T100 (RM449U)
FUEL CUT RPM
INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT TOYOTA HAND−HELD TESTER
OR OBDII SCAN TOOL
(See page MF−5)
3. INSPECT FUEL CUT OFF RPM
(a) Increase the engine speed to at least 3,000 rpm.
(b) Using a sound scope, check for injector operating noise.
(c) Check that when the throttle lever is released, injector op-
eration noise stops momentarily and then resumes.
HINT:
Measure with the A/C OFF.
Fuel return rpm:
M/T: 1,400 rpm
A/T: 1,500 rpm
4. DISCONNECT TOYOTA HAND−HELD TESTER
OR OBDII SCAN TOOL

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SFI SYSTEM SF-1
FUEL PUMP SF-5
FUEL PRESSURE REGULATOR SF-14
INJECTOR SF-18
FUEL TANK AND LINE SF-25
MASS AIR FLOW (MAF) METER SF-28
THROTTLE BODY SF-31
IDLE AIR CONTROL (IAC) VALVE SF-39
EFI MAIN RELAY SF-45
CIRCUIT OPENING RELAY SF-46
VSV FOR FUEL PRESSURE CONTROL SF-47
VSV FOR EXHAUST GAS CONTROL
VALVE SF-49
VSV FOR EVAPORATIVE EMISSION
(EVAP) SF-50
ENGINE COOLANT TEMPERATURE
(ECT) SENSOR SF-51
KNOCK SENSOR SF-54
EXHAUST GAS RECIRCULATION
(EGR) GAS TEMPERATURE SENSOR SF-59
HEATED OXYGEN SENSOR SF-60
ENGINE CONTROL MODULE (ECM) SF-61
FUEL CUT RPM SF-63

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− SFI (5VZ−FE)SFI SYSTEM
SF−1
1007 Author: Date:
1996 TOYOTA T100 (RM449U)
SFI SYSTEM
PRECAUTION
1. BEFORE WORKING ON FUEL SYSTEM, DISCON-
NECT NEGATIVE (−) TERMINAL CABLE FROM BAT-
TERY
HINT:
Any diagnostic trouble code retained by the computer will be
erased when the negative (−) terminal cable is removed from
the battery.
Therefore, if necessary, read the diagnosis before 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) In the event of engine misfire, these precautions should
be taken.
(1) Check proper connection to battery terminals, etc.
(2) After repair work, check that the ignition coil termi-
nals and all other ignition system lines are recon-
nected securely.
(3) When cleaning the engine compartment, be espe-
cially careful to protect the electrical system from
water.
(b) Precautions when the handling heated oxygen sensors.
(1) Do not allow the 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 allow air suction and cause the engine to run out
of tune.