TOYOTA T100 1996 Factory Service Manual

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− MFI (3RZ−FE)FUEL PUMP
MF−7
959 Author: Date:
1996 TOYOTA T100 (RM449U)
(u) Check that the fuel pressure remains as specified for 5
minutes after the engine has stopped.
Fuel pressure:
147 kPa (1.5 kgf/cm
2, 21 psi) or more
If pressure is not as specified, check the fuel pump, pressure
regulator and/or injector.
(v) After checking fuel pressure, disconnect the negative (−)
terminal cable from the battery and carefully remove SST
to prevent gasoline from splashing.
SST 09268−45012
(w) Reconnect the fuel inlet pipe to the delivery pipe with 2
new gaskets and the union bolt.
Torque: 29 N·m (300 kgf·cm, 22 ft·lbf)
(x) Reconnect the negative (−) terminal cable to the battery.
(y) Check for fuel leakage.

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MF−8
− MFI (3RZ−FE)FUEL PUMP
1996 TOYOTA T100 (RM449U)
COMPONENTS

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B02579
− MFI (3RZ−FE)FUEL PUMP
MF−9
1996 TOYOTA T100 (RM449U)
REMOVAL
CAUTION:
Do not smoke or work near an open flame when working on
the fuel pump.
1. REMOVE FUEL TANK
(See page MF−23)
2. REMOVE FUEL PUMP BRACKET ASSEMBLY FROM
FUEL TANK
(a) Disconnect the fuel pump connector from the clamp.
(b) Remove the 7 bolts.
Torque: 3.9 N·m ( 40 kgf·cm, 35 in.·lbf)
(c) Pull out the pump bracket assembly.
(d) Remove the gasket from the pump bracket.
HINT:
At the time assembly please refer to the following items.
Install the fuel pump bracket with a new gasket.

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P15055
P15059
MF−10
− MFI (3RZ−FE)FUEL PUMP
1996 TOYOTA T100 (RM449U)
DISASSEMBLY
1. INSPECT FUEL PUMP RESISTANCE
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: 0.2 − 3.0 Ω at 20°C (68°F)
If the resistance is not as specified, replace the fuel pump and/
or set plate.
2. INSPECT FUEL PUMP OPERATION
Connect the positive (+) lead from the battery to terminal 1 of
the connector, and the negative (−) lead to terminal 2. Check
that the fuel pump operates.
NOTICE:
These tests must be done quickly (within 10 seconds) to
prevent the coil from burning out. Keep the fuel pump as far
away from the battery as possible. Always do the switching
at the battery side.
If operation is not as specified, replace the fuel pump and/or
plate.
3. REMOVE FUEL PUMP FROM FUEL PUMP BRACKET
(a) Disconnect the fuel pump connector.
(b) Pull off the lower side of the fuel pump from the pump
bracket.
(c) Disconnect the fuel hose from the fuel pump, and remove
the fuel pump.
(d) Remove the rubber cushion from the fuel pump.
4. REMOVE FUEL PUMP FILTER FROM FUEL PUMP
(a) Using a small screwdriver, remove the clip.
(b) Pull out the pump filter.

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− MFI (3RZ−FE)FUEL PUMP
MF−11
1996 TOYOTA T100 (RM449U)
REASSEMBLY
Reassembly is in the reverse order of disassembly (See page MF−10).

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MF−12
− MFI (3RZ−FE)FUEL PUMP
1996 TOYOTA T100 (RM449U)
INSTALLATION
Installation is in the reverse order of removal (See page MF−9).

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P25123 Non−reusable part Vacuum Sensing
Hose
 O−RingFuel Pressure
Regulator
Fuel Return
Hose
− MFI (3RZ−FE)FUEL PRESSURE REGULATOR
MF−13
965 Author: Date:
1996 TOYOTA T100 (RM449U)
FUEL PRESSURE REGULATOR
COMPONENTS

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P14968
MF−14
− MFI (3RZ−FE)FUEL PRESSURE REGULATOR
1996 TOYOTA T100 (RM449U)
REMOVAL
1. DISCONNECT VACUUM SENSING HOSE FROM FUEL
PRESSURE REGULATOR
2. DISCONNECT FUEL RETURN HOSE FROM FUEL
PRESSURE REGULATOR
HINT:
Put a suitable container or shop towel under the pressure regu-
lator.
3. REMOVE FUEL PRESSURE REGULATOR
(a) Remove the 2 bolts and the fuel pressure regulator.
Torque: 8.8 N·m (90 kgf·cm, 78 in.·lbf)
(b) Remove the O−ring.
HINT:
At the time of installation please refer to the following items.
Install the pressure regulator with a new O−ring.

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− MFI (3RZ−FE)FUEL PRESSURE REGULATOR
MF−15
1996 TOYOTA T100 (RM449U)
INSTALLATION
Installation is in the reverse order of removal (See page MF−14).

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SF0AP−03
P24765
P25103
Ohmmeter MF−16
− MFI (3RZ−FE)INJECTOR
968 Author: Date:
1996 TOYOTA T100 (RM449U)
INJECTOR
ON−VEHICLE INSPECTION
1. INSPECT INJECTOR OPERATION
Check operation sound from each injector.
(1) With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine speed.
(2) If you have no sound scope, you can check the in-
jector transmission operation with your finger.
If no sound or unusual sound is heard, check the wiring connec-
tor, injector or injection signal from the ECM.
2. INSPECT INJECTOR RESISTANCE
(a) Remove the throttle body.
(See page MF−28)
(b) Disconnect the injector connectors.
(c) Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
12 − 16 Ω at 20°C (68°F)
If the resistance is not as specified, replace the injector.
(d) Reconnect the injector connectors.
(e) Reinstall the throttle body.
(See page MF−30)