fuel pump TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine − INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN−23
1996 TOYOTA T100 (RM449U)
5. PROBLEM SYMPTOMS TABLE
The suspect circuits or parts for each problem symptom are shown in the table below. Use this table to trou-
bleshoot the problem when a ”Normal” code is displayed in the diagnostic trouble code check but the prob-
lem is still occurring. Numbers in the table indicate the inspection order in which the circuits or parts should
be checked.
HINT:
When the problem is not detected by the diagnostic system even though the problem symptom is present,
it is considered that the problem is occurring outside the detection range of the diagnostic system, or that
the problem is occurring in a system other than the diagnostic system.
Symptom
Suspect AreaSee page
Engine does not crank (Does not start)
No initial combustion (Does not start)
No complete combustion (Does not start)1. Starter and starter relay
1. ECM power source circuit
2. Fuel pump control circuit
3. Engine control module (ECM)
1. Starter signal circuit
2. Fuel pump control circuit1. Fuel pump control circuitST − 2, ST − 17
DI − 101
DI − 104
IN − 28
PROBLEM SYMPTOMS TABLE
1. Compression
2. Fuel pump control circuit 1. A/C signal circuit
2. Fuel pump control circuit 1. A/C signal circuit (Compressor circuit)
2. ECM power source circuit 1. Starter signal circuit
2. Fuel pump control circuit1. Starter signal circuit
2. Fuel pump control circuit
3. Compression
idling) High engine idle speed (Poor idling) Hot engine Cold engine (Difficult to start)Engine cranks normally (Difficult to start)
DI − 101 DI − 173
DI − 104 DI − 173
DI − 104 DI − 104
DI − 173
DI − 104
 Problem Symptom Page
Indicates the page where the flow chart for each circuit
is located.
 Circuit Inspection, Inspection Order
Indicates the circuit which needs to be checked for each problem
symptom. Check in the order indicated by the numbers.
 Circuit or Part Name
Indicates the circuit or part which needs to be checked.
AC − 85 EM − 3

Downloaded from www.Manualslib.com manuals search engine IN02M−01
− INTRODUCTIONTERMS
IN−33
1996 TOYOTA T100 (RM449U)
GLOSSARY OF SAE AND TOYOTA TERMS
This glossary lists all SAE−J1930 terms and abbreviations used in this manual in compliance with SAE rec-
ommendations, as well as their Toyota equivalents.
SAE
ABBREVIATIONSSAE TERMSTOYOTA TERMS
( )−−ABBREVIATIONS
A/CAir ConditioningAir Conditioner
ACLAir CleanerAir Cleaner
AIRSecondary Air InjectionAir Injection (AI)
APAccelerator Pedal−
B+Battery Positive Voltage+B, Battery Voltage
BAROBarometric Pressure−
CACCharge Air CoolerIntercooler
CARBCarburetorCarburetor
CFIContinuous Fuel Injection−
CKPCrankshaft PositionCrank Angle
CLClosed LoopClosed Loop
CMPCamshaft PositionCam Angle
CPPClutch Pedal Position−
CTOXContinuous Trap Oxidizer−
CTPClosed Throttle Position−
DFIDirect Fuel Injection (Diesel)Direct Injection (DI)
DIDistributor Ignition−
DLC1
DLC2
DLC3Data Link Connector 1
Data Link Connector 2
Data Link Connector 31: Check Connector
2: Total Diagnosis Comunication Link (TDCL)
3: OBD II Diagnostic Connector
DTCDiagnostic Trouble CodeDiagnostic Code
DTMDiagnostic Test Mode−
ECLEngine Control Level−
ECMEngine Control ModuleEngine ECU (Electronic Control Unit)
ECTEngine Coolant TemperatureCoolant Temperature, Water Temperature (THW)
EEPROMElectrically Erasable Programmable Read Only Memory
Electrically Erasable Programmable Read Only Memory
(EEPROM),
Erasable Programmable Read Only Memory (EPROM)
EFEEarly Fuel EvaporationCold Mixture Heater (CMH), Heat Control Valve (HCV)
EGRExhaust Gas RecirculationExhaust Gas Recirculation (EGR)
EIElectronic IgnitionDistributorless Ignition (DI)
EMEngine ModificationEngine Modification (EM)
EPROMErasable Programmable Read Only MemoryProgrammable Read Only Memory (PROM)
EVAPEvaporative EmissionEvaporative Emission Control (EVAP)
FCFan Control−
FEEPROMFlash Electrically Erasable Programmable
Read Only Memory−
FEPROMFlash Erasable Programmable Read Only Memory−
FFFlexible Fuel−
FPFuel PumpFuel Pump
GENGeneratorAlternator
GNDGroundGround (GND)

Downloaded from www.Manualslib.com manuals search engine SS093−02
− SERVICE SPECIFICATIONSENGINE MECHANICAL (3RZ−FE)
SS−7
1996 TOYOTA T100 (RM449U)
TORQUE SPECIFICATION
Part tightenedN·mkgf·cmft·lbf
Throttle body x Air intake chamber2020014
Spark plug x Cylinder head1920014
Cylinder head x Cylinder block 1st
2nd
3rd39
Turn 90°
Turn 90°
40029
Cylinder head x Timing chain cover2121015
Camshaft bearing cap x Cylinder head15.516012
Camshaft timing gear x Camshaft73.575054
Distributor gear x Camshaft4646534
Chain tensioner x Cylinder head2121015
Engine hanger x Cylinder head4242030
Exhaust manifold x Cylinder head4950036
Heat insulator x Exhaust manifold5.55548 in.·lbf
Front exhaust pipe x Exhaust manifold6263046
No.1 support bracket x Transmission3940029
No.1 support bracket clamp bolt1919514
Front exhaust pipe x TWC3940029
Intake manifold x Cylinder head2930022
Delivery pipe x Intake manifold2121015
Fuel inlet tube x Fuel filter2930022
Fuel inlet tube x Delivery pipe2930022
EGR valve x Air intake chamber, EGR pipe1919514
EGR vacuum modulator x Air intake chamber8.58574 in.·lbf
EGR pipe x Exhaust manifold2020015
EGR pipe x Cylinder head1818514
Cylinder head rear cover x Cylinder head13.513510
Water outlet x Cylinder head2020014
PS pump bracket x Cylinder head2020014
PS pump bracket x PS pump5859043
PS pump x PS pump pulley4344032
PS pump idler pulley x Cylinder head2020014
Balance shaft drive gear x Balance shaft2525018
No.2 chain tensioner, No.3 vibration damper x Cylinder block1818513
No.2 vibration damper x Cylinder block2727020
No.1 vibration damper x Cylinder block1818513
No.1 timing chain tensioner slipper x Cylinder block2727020
Timing chain cover x Cylinder block Bolt A
Bolt B
Bolt C
Nut D20
24.5
44
20200
250
440
20014
18
32
14
Timing chain cover mounting bolt1818513
No.1 water bypass pipe mounting nut2020014
Crankshaft pulley x Crankshaft2602,650193
No.2 and No.3 crankshaft pulley x Crankshaft pulley2525018

Downloaded from www.Manualslib.com manuals search engine SS−8
− SERVICE SPECIFICATIONSENGINE MECHANICAL (3RZ−FE)
1996 TOYOTA T100 (RM449U) Oil strainer x Cylinder block
1818513
Oil pan x Cylinder block12.51309
Crankshaft position sensor x Timing chain cover8.58574 in.·lbf
Generator bracket x Cylinder block74.576055
Generator bracket x Timing chain cover1818513
Generator adjusting bar x Timing chain cover63.565047
A/C compressor bracket x Cylinder block4444032
A/C compressor x A/C compressor bracket2525018
Water pump pulley x Water pump2121016
Connecting rod cap x Connecting rod 1st
2nd45
Turn 90°46033
Main bearing cap x Cylinder block 1st
2nd39
Turn 90°40029
No.1 balance shaft x Timing gear3636526
No.2 balance shaft x Timing sprocket3636526
Balance shaft x Cylinder block1818513.4
Rear oil seal retainer x Cylinder block13.51359.7
RH, LH engine mounting bracket x Cylinder block4545034
Oil dipstick guide x LH engine mounting bracket2020014
Oil filter bracket union, Engine coolant drain plug x Cylinder block2525018
Oil filter bracket x Cylinder block2829021
Water bypass pipe x Cylinder block2020014
Knock sensor x Cylinder block3738027
Fuel filter x Cylinder block2020014
Rear end plate x Cylinder block1818513
Rear end plate x Water bypass pipe2020014
Flywheel x Crankshaft 1st
2nd26.5
Turn 90°27019
Front crossmember x Engine rear mounting bracket2526019
Front exhaust pipe clamp x Exhaust manifold6263046
Exhaust support bracket x Transmission3940029
Front exhaust pipe clamp1919514
Front exhaust pipe x TWC3940029
Engine rear mounting bracket x Engine rear mounting insulator1818313
Engine front mounting insulator x Frame3838728
Clutch release cylinder bracket x Transmission3940029
Clutch release cylinder x Transmission131309
Stabilizer bar bracket mounting bolt3030622
Stabilizer bar x Lower suspension arm131309
Intake air connector x Cylinder head1818513
Radiator x Body1818513

Downloaded from www.Manualslib.com manuals search engine SS096−02
− SERVICE SPECIFICATIONSMFI (3RZ−FE)
SS−17
191 Author: Date:
1996 TOYOTA T100 (RM449U)
MFI (3RZ−FE)
SERVICE DATA
Fuel pressure
regulatorFuel pressure at no vacuum265 − 304 kPa
(2.7 − 3.1 kgf/cm2, 38 − 44 psi)
Fuel pumpResistance at 20°C (68°F)0.2 − 3.0 Ω
InjectorResistance at 20°C (68°F)
Injection volume
Difference between each cylinder
Fuel leakage12 − 16 Ω
69 − 88 cm3 (4.2 − 5.3 cu in.) per 15 seconds
5 cm3 (0.3 cu in.) or less
One drop or less per minutes
Throttle bodyThrottle valve fully closed angle
Throttle opener setting speed6°
1,200 − 1,400 rpm
TP sensorClearance between stop screw and leverTerminalsResistance
0 mm (0 in.) VTA − E2
0.50 mm (0.020 in.) IDL − E2
0.75 mm (0.030 in.) IDL − E2
Throttle valve fully open VTA − E2
−VC − E20.2 − 5.7 kΩ
2.3 kΩ or less
Infinity
2.0 − 10.2 kΩ
2.5 − 5.9 kΩ
IAC valveResistance +B − RSC or RSO17.0 − 24.5 Ω (−10 − 50°C)
21.5 − 28.5 Ω ( 50 − 100°C)
VSV for EVAPResistance at 20°C (68°F)30 − 34 Ω
VSV for EGRResistance at 20°C (68°F)33 − 39 Ω
VSV for Vapor
pressure sensorResistance at 20°C (68°F)37 − 44 Ω
Vapor pressure
sensorPower source voltage4.5 − 5.5 V
ECT sensorResistance at −20°C (−4°F)
at 0°C (32°F)
at 20°C (68°F)
at 40°C (104°F)
at 60°C (140°F)
at 80°C (176°F)10 − 20 kΩ
4 − 7 kΩ
2 − 3 kΩ
0.9 − 1.3 kΩ
0.4 − 0.7 kΩ
0.2 − 0.4 kΩ
MAF meterResistance (THA − E2) at −20°C (−4°F)
at 0°C (32°F)
at 20°C (68°F)
at 40°C (104°F)
at 60°C (140°F)
at 80°C (176°F)10 − 20 kΩ
4 − 7 kΩ
2 − 3 kΩ
0.9 − 1.3 kΩ
0.4 − 0.7 kΩ
0.2 − 0.4 kΩ
EGR gas temp.
sensorResistance at 50°C (122°F)
at 100°C (212°F)
at 150°C (302°F)64 − 97 kΩ
11 − 16 kΩ
2 − 4 kΩ
Heated
oxygen sensorHeater coil resistance
Bank 1 sensor 1 at 20°C (68°F)
Bank 1 sensor 2 at 20°C (68°F)
11 − 16 Ω
11 − 16 Ω
Fuel cut RPMFuel return rpm M/T
A/T1,400 rpm
1,500 rpm

Downloaded from www.Manualslib.com manuals search engine SS097−02
SS−18
− SERVICE SPECIFICATIONSMFI (3RZ−FE)
1996 TOYOTA T100 (RM449U)
TORQUE SPECIFICATION
Part tightenedN·mkgf·cmft·lbf
Fuel line (Union bolt type)2930022
Fuel line (Flare nut type)3031022
Fuel pump bracket assembly x Fuel tank3.94035 in.·lbf
Fuel filter x Cylinder block2020015
Fuel pressure regulator x Delivery pipe8.89078 in.·lbf
Delivery pipe x Cylinder head2121015
Fuel inlet tube x Fuel filter2930022
Fuel inlet tube x Delivery pipe2930022
Air intake chamber x Intake manifold2121015
Throttle body x Air intake chamber2020014
Fuel evaporation tube x Fuel tank1.51513 in.·lbf
Fuel tank filler pipe x Fuel tank3.53531 in.·lbf
Fuel inlet pipe x Body5.45547 in.·lbf
Fuel tank band x Body3940029
MAF meter x Air cleaner cap101007
ECT sensor x Cylinder head2020014
Knock sensor x Cylinder block4445033

Downloaded from www.Manualslib.com manuals search engine SS00U−11
− SERVICE SPECIFICATIONSSFI (5VZ−FE)
SS−19
193 Author: Date:
1996 TOYOTA T100 (RM449U)
SFI (5VZ−FE)
SERVICE DATA
Fuel pressure
regulatorFuel pressure at no vacuum265 − 304 kPa (2.7 − 3.1 kgf/cm2, 38 − 44 psi)
Fuel pumpResistance at 20 °C (68 °F)0.2 − 3.0 Ω
InjectorResistance
Injection volume
Difference between each cylinder
Fuel leakageApprox. 13.8 Ω
56 − 69 cm3 (3.4 − 4.2 cu in.) per 15 sec.
6 cm3 (0.31 cu in.) or less
1 drop or less per minute
MAF meterResistance (THA − E2) at −20 °C (−4 °F)
at 0 °C (32 °F)
at 20 °C (68 °F)
at 40 °C (104 °F)
at 60 °C (140 °F)
at 80 °C (176 °F)10 − 20 kΩ
4 − 7 kΩ
2 − 3 kΩ
0.9 − 1.3 kΩ
0.4 − 0.7 kΩ
0.2 − 0.4 kΩ
Throttle bodyThrottle valve fully closed angle
DP setting speed (M/T)
Throttle opener setting speed10°
1,800 − 2,200 rpm
900 − 1,950 rpm
Throttle position
sensor
Clearance between stop screw and lever
0 mm (0 in.) VTA − E2
0.32 mm (0.013 in.) IDL − E2
0.54 mm (0.021 in.) IDL − E2
Throttle valve fully open VTA − E2
VC − E2
0.28 − 6.4 kΩ
0.5 kΩ or less
Infinity
2.0 − 11.6 kΩ
2.7 − 7.7 kΩ
IAC valveResistance (+B − RSO or RSC) at cold
at hot17.0 − 24.5 Ω
21.5 − 28.5 Ω
VSV for fuel pres-
sure controlResistance at 20 °C (68 °F)33 − 39 Ω
VSV for EGR
(2WD 0.5 ton)Resistance at 20 °C (68 °F)33 − 39 Ω
VSV for EVAPResistance at 20 °C (68 °F)29 − 33 Ω
A/C idle−up valve
(w/ A/C)Resistance at 20 °C (68 °F)30 − 34 Ω
ECT sensorResistance at −20 °C (−4 °F)
at 0 °C (32 °F)
at 20 °C (68 °F)
at 40 °C (104 °F)
at 60 °C (140 °F)
at 80 °C (176 °F)10 − 20 kΩ
4 − 7 kΩ
2 − 3 kΩ
0.9 − 1.3 kΩ
0.4 − 0.7 kΩ
0.2 − 0.4 kΩ
EGR gas temper-
ature sensor
(2WD 0.5 ton)Resistance at 50 °C (122 °F)
at 100 °C (212 °F)
at 150 °C (302 °F)64 − 97 kΩ
11 − 16 κΩ
2 − 4 kΩ
Heated oxygen
sensorHeater coil resistance
M/T Bank 1 Sensor 1 at 20 °C (68 °F)
Others at 20 °C (68 °F)
5 − 7 Ω
11 − 16 Ω
Fuel cut rpmFuel return rpm M/T
A/T1,000 rpm
1,200 rpm

Downloaded from www.Manualslib.com manuals search engine SS00V−11
SS−20
− SERVICE SPECIFICATIONSSFI (5VZ−FE)
1996 TOYOTA T100 (RM449U)
TORQUE SPECIFICATION
Part tightenedN·mkgf·cmft·lbf
Fuel line (Union bolt type)34.335025
Fuel line (Flare nut type)34.335025
Fuel line (Flare nut type) using SST2828521
No. 2 timing belt cover x No. 3 timing belt cover99080 in.·lbf
Fuel inlet pipe x Intake manifold88071 in.·lbf
Delivery pipe x Intake manifold1313010
Fuel pump bracket assembly x Fuel tank3.94035 in.·lbf
Fuel tank band x Body4344032
Fuel tank filler pipe x Fuel tank3.94035 in.·lbf
Fuel evaporation vent tube x Fuel tank1.51513 in.·lbf
Fuel pressure regulator x LH delivery pipe88071 in.·lbf
MAF meter x Air cleaner cap6.97261 in.·lbf
VSV assembly x Air intake connector88071 in.·lbf
A/C idle−up valve x Intake air connector2020014
ECT sensor x Intake manifold2020014
Knock sensor x Cylinder block3940029
EGR gas temperature sensor x EGR valve2020014
Heated oxygen sensor x Front exhaust pipe, Center exhaust pipe2020014

Downloaded from www.Manualslib.com manuals search engine A00770
ON
Fuel Return Hose
P25086
DI−10
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
7 Check fuel pressure.
PREPARATION:
(a) Be sure that enough fuel is in the tank.
(b) Connect the TOYOTA hand−held tester to the DLC3.
(c) Turn the ignition switch ON and push the TOYOTA hand−
held tester main switch ON.
(d) Use ”ACTIVE TEST” mode to operate the fuel pump.
CHECK:
Check for fuel pressure in the fuel return hose when it is pinched
off.
HINT:
At this time, you will hear a fuel flowing noise.
NG Proceed to page MF−1 and continue to trouble-
shoot.
OK
8 Check for spark.
PREPARATION:
(a) Disconnect the high−tension cord from the spark plug.
(b) Remove the spark plug.
(c) Install the spark plug to the high−tension cord.
(d) Disconnect the injector connector.
(e) Ground the spark plug.
CHECK:
Check if the spark occurs while engine is being cranked.
NOTICE:
To prevent excess fuel being injected from the injectors
during this test, don’t crank the engine for more than 5 ∼ 10
seconds at a time.
NG Proceed to page IG−1 and continue to trouble-
shoot.
OK
Proceed to problem symptoms table on page
DI−21.

Downloaded from www.Manualslib.com manuals search engine DI−12
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
(b) TOYOTA Enhanced Signals.
TOYOTA hand−held tester displayMeasurement ItemNormal Condition*
MISFIRE RPMEngine RPM for first misfire rangeMisfire 0: 0 rpm
MISFIRE LOADEngine load for first misfire rangeMisfire 0: 0 g/r
INJECTORFuel injection time for cylinder No.1Idling: 2.5 − 4.3 ms
IAC DUTY RATIOIntake Air Control Valve Duty Ratio
Opening ratio rotary solenoid type IAC valveIdling: 24.8 − 50.0 %
STARTER SIGStarter SignalCranking: ON
CTP SWClosed Throttle Position Switch SignalThrottle Fully Closed: ON
A/C SIGA/C Switch SignalA/C ON: ON
STOP LIGHT SWStop Light Switch SignalStop light switch ON: ON
FC IDLFuel Cut Idle: Fuel cut when throttle valve fully
closed, during decelerationFuel cut operating: ON
FC TAUFuel Cut TAU: Fuel cut during very light loadFuel cut operating: ON
CYL #1, CYL #2, CYL #3, CYL #4Abnormal revolution variation for each cylinder0 %
IGNITIONTotal number of ignition for every 1,000
revolutions0 − 2,000
EGRT GASEGR Gas Temp. Sensor ValueEGR not operating: Temp. between intake air
temp. and engine coolant temp.
EGR SYSTEMEGR System Operating ConditionIdling: OFF
A/C CUT SIGA/C Cut SignalA/C S/W OFF: ON
FUEL PUMPFuel Pump SignalIdling: ON
EVAP (PURGE) VSVEVAP VSV SignalIdling: OFF
TOTAL FT B1Total Fuel Trim Bank 1: Average value for fuel
trim system of bank 1Idling: 0.8 − 1.2 V
O2 LR B1, S1
Oxygen Sensor Lean Rich Bank 1, Sensor 1 Re-
sponse time for oxygen sensor output to switch
from lean to rich
Idling after warming up: 0 − 1,000 msec.
O2 RL B1, S1
Oxygen Sensor Rich Lean Bank 1, Sensor 1 Re-
sponse time for oxygen sensor output to switch
from rich to lean
Idling after warming up: 0 − 1,000 msec.
*: If no conditions are specifically stated for ”ldling”, it means the shift lever is at N or P position, the A/C switch
is OFF and all accessory switches are OFF.