1996 TOYOTA T100 stop start

Downloaded from www.Manualslib.com manuals search engine V07268
VIBRATION METHOD: When vibration seems to be the major cause.
CONNECTORS
WIRE HARNESS
PARTS AND SENSOR1
Slightly shake the connector vertically and horizontally.
Slightly shake the wire harness vertically and horizontally.
The connector joint, fulcrum of the vibration, and body
through portion are the major areas to be checked thorough-
ly.
Apply slight vibration with a finger to the part of the sensor
considered to be the problem cause and check if the
malfunction occurs.Shake Slightly
Swing Slightly
Vibrate Slightly
HINT: Applying strong vibration to relays may result in open
relays. IN−20
− INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
1996 TOYOTA T100 (RM449U)
3. SYMPTOM SIMULATION
The most difficult case in troubleshooting is when there are no problem symptoms occurring. In such cases,
a thorough customer problem analysis must be carried out, then simulate the same or similar conditions and
environment in which the problem occurred in the customer’s vehicle. No matter how much experience a
technician has, or how skilled he may be, if he proceeds to troubleshoot without confirming the problem
symptoms he will tend to overlook something important in the repair operation and make a wrong guess
somewhere, which will only lead to a standstill. For example, for a problem which only occurs when the en-
gine is cold, or for a problem which occurs due to vibration caused by the road during driving, etc., the prob-
lem can never be determined so long as the symptoms are confirmed with the engine hot condition or the
vehicle at a standstill. Since vibration, heat or water penetration (moisture) is likely cause for problem which
is difficult to reproduce, the symptom simulation tests introduced here are effective measures in that the ex-
ternal causes are applied to the vehicle in a stopped condition.
Important Points in the Symptom Simulation Test:
In the symptom simulation test, the problem symptoms should of course be confirmed, but the problem area
or parts must also be found out. To do this, narrow down the possible problem circuits according to the symp-
toms before starting this test and connect a tester beforehand. After that, carry out the symptom simulation
test, judging whether the circuit being tested is defective or normal and also confirming the problem symp-
toms at the same time. Refer to the matrix chart of problem symptoms for each system to narrow down the
possible causes of the symptom.

Downloaded from www.Manualslib.com manuals search engine SS060−03
SS−48
− SERVICE SPECIFICATIONSMANUAL TRANSMISSION (W59)
1996 TOYOTA T100 (RM449U)
TORQUE SPECIFICATION
Part tightenedN·mkgf·cmft·lbf
Transmission x Engine7273053
Transmission x Starter3940029
Rear end plate x Clutch housing3738027
Shift fork set bolt2020014
Straight screw plug2525018
Reverse idler gear shaft stopper bolt2525018
Oil separator x Intermediate plate1818513
Front bearing retainer set bolt2525018
Extension housing x Intermediate plate3738027
Restrict pin4041030
Shift lever housing x Shift and select lever shaft3940029
Control shift lever retainer x Extension housing1818513
Drain and filler plugs3738027
Back−up light switch4041030
Clutch housing x Transmission case3738027
Rear bearing retainer x Intermediate plate1818513
Speedometer driven gear131309

Downloaded from www.Manualslib.com manuals search engine SS03A−03
− SERVICE SPECIFICATIONSBODY ELECTRICAL
SS−77
251 Author: Date:
1996 TOYOTA T100 (RM449U)
BODY ELECTRICAL
SERVICE DATA
DAYTIME RUNNING LIGHT MAIN RELAY (Wire Harness Side)
2 − Ground (Ignition Switch LOCK or ACC)No voltage
2 − Ground (Ignition Switch ON or START)Battery positive voltage
6 − Ground (Constant)Battery positive voltage
11 − Ground (Engine Stop)No voltage
11 − Ground (Engine Running)Battery positive voltage
DAYTIME RUNNING LIGHT MAIN RELAY (Connector connected)
17 − Ground (Headlight dimmer switch LOW beam)No voltage
17 − Ground (Headlight dimmer switch HIGH beam or Flash)Battery positive voltage
TURN SIGNAL FLASHER
Flashes/ Minute60 − 120
SPEEDOMETER (Using a speedmeter tester)
Standard indication (mph)Allowable range (mph)
2018 − 24
4038 − 44
6058 − 66
8078 − 88
10098 − 11 0
12011 8 − 132
Standard indication (km/h)Allowable range (km/h)
2017 − 24
4038 − 46
6057.5 − 67
8077 − 88
10096 − 109
12011 5 − 130
140134 − 151.5
160153 − 173
TACHOMETER (On−Vehicle) / DC 13.5 V 20 °C at (68 °F)
Standard indicationAllowable range
700610 − 750
3,0002,850 − 3,150
5,0004,850 − 5,150
7,0006,790 − 7,210
VOLT GAUGEResistance (Ω)
A − BApprox. 347.0 Ω
FUEL RECEIVER GAUGE (w/ Tachometer)Resistance (Ω)
A − BApprox. 137.0 Ω
A − CApprox. 123.0 Ω
B − CApprox. 260.0 Ω
FUEL RECEIVER GAUGE (w/o Tachometer)Resistance (Ω)
A − BApprox. 150.0 Ω
A − CApprox. 80.0 Ω

Downloaded from www.Manualslib.com manuals search engine P00495
Outside
Inside
DI−8
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
6. BASIC INSPECTION
When the malfunction code is not confirmed in the DTC check, troubleshooting should be performed in the
order for all possible circuits to be considered as the causes of the problems. In many cases, by carrying
out the basic engine check shown in the following flow chart, the location causing the problem can be found
quickly and efficiently. Therefore, use of this check is essential in engine troubleshooting.
1 Is battery positive voltage 11 V or more when engine is stopped?
NO Charge or replace battery.
YES
2 Is engine cranked?
NO Proceed to page ST−15 and continue to trouble-
shoot.
YES
3 Does engine start?
NO Go to step 7.
YES
4 Check air filter.
PREPARATION:
Remove the air filter.
CHECK:
Visual check that the air filter is not dirty or excessive oily.
HINT:
If necessary, clean the filter with compressed air. First blow from
inside thoroughly, then blow from outside of the filter.
NG Repair or replace.
OK

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.

Downloaded from www.Manualslib.com manuals search engine S00874
IG Switch
(M/T)(A/T)
23ECM
E7 E7 1
AM2
IA3
8W−RW−R
8
2
27
B−R
R−L
W Battery
IE1R/B No.2B−R
B−R
25 V
Tr
1
20
317
E7 E7 14B−L
B−Y2
1 Tr
2
3 4
Tachometer To To
Spark plug
B−W
Igniter IgnitionCoil
IGT
IGF 5
− DIAGNOSTICSENGINE (3RZ−FE)
DI−103
1996 TOYOTA T100 (RM449U)
DTC P1300 Ignition Circuit Malfunction
CIRCUIT DESCRIPTION
The ECM determines the ignition timing, turns on Tr1 at a predetermined angle (°CA) before the desired igni-
tion timing and outputs an ignition signal (IGT) ”1” to the igniter.
Since the width of the IGT signal is constant, the dwell angle control circuit in the igniter determines the time
the control circuit starts primary current flow to the ignition coil based on the engine rpm and ignition timing
one revolution ago, that is, the time the Tr
2 turns on.
When it reaches the ignition timing, the ECM turns Tr
1 off and outputs the IGT signal ”0”.
This turns Tr
2 off, interrupting the primary current flow and generating a high voltage in the secondary coil
which causes the spark plug to spark. Also, by the counter electromotive force generated when the primary
current is interrupted, the igniter sends an ignition confirmation signal (IGF) to the ECM. The ECM stops fuel
injection as a fail safe function when the IGF signal is not input to the ECM.
DTC No.DTC Detecting ConditionTrouble Area
P1300No IGF signal to ECM for 4 consecutive IGT signal during
engine runningOpen or short in IGF or IGT circuit from igniter to ECM
Igniter
ECM
WIRING DIAGRAM
DI0U1−03

Downloaded from www.Manualslib.com manuals search engine − DIAGNOSTICSENGINE (5VZ−FE)
DI−139
1996 TOYOTA T100 (RM449U)
(b) TOYOTA Enhanced Signals.
TOYOTA hand−held tester displayMeasurement ItemNormal Condition*1
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: 1.82 − 3.15 ms
IAC DUTY RATIOIntake Air Control Valve Duty Ratio
Opening ratio rotary solenoid type IAC valveIdling: 22 − 46 %
STARTER SIGStarter SignalCranking: ON
A/C SIGA/C Switch SignalA/C ON: ON
PNP SWPark/Neutral Position Switch SignalP or N position: 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 #6Abnormal revolution variation for each cylinder0 %
IGNITIONTotal number of ignition for every 1,000
revolutions0 − 3,000
EGRT GAS*2EGR Gas Temp. Sensor Value
EGR not operating:
Temp. between intake air temp. and engine
coolant temp.
EGR SYSTEM*2EGR 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 SignalVSV operating: ON
VAPOR PRESS VSVVapor Pressure VSV SignalVSV operating: ON
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.
*1: 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.
*2: Only for 2WD models with a load capacity of 0.5 ton and regular cab.

Downloaded from www.Manualslib.com manuals search engine S00049
P24346 P24347
A00117
Start
Stop Engine
OFF ON OFF ON VSV for
Vapor
Pressure
Sensor
VSV for
EVAP
5 sec. 5 sec.
Measure Voltage
E2 (−) PTNK (+)
E2 (−) PTNK (+)
For M/T
For A/T
DI−220
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
14 Check charcoal canister.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Remove the fuel tank cap.
(c) Disconnect the VSV connector for the vapor pressure
sensor.
(d) Select the ”ACTIVE TEST” mode on the TOYOTA hand−
held tester.
(e) Start the engine.
(f) The VSV for the EVAP is ON by the TOYOTA hand−held
tester and remains on for 5 sec.
CHECK:
Measure voltage between terminals PTNK and E2 of ECM con-
nector 5 sec. after switching VSV for EVAP from ON to OFF.
OK:
Voltage: 2.5 V or less
NG Replace charcoal canister.
OK
Check and replace ECM (See page IN−26).