1996 TOYOTA T100 sensor

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ON
ECM
1
2
3
411
11 1 0
12 11
99
Throttle Position
Sensor
E6 E6
(M/T)(A/T)5 V
VCC
VTA
IDL
E2
B+
E1
E6 E6
E6 E6
E6 E6
DI−100
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
4 Check for short in harness or ECM.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Disconnect the throttle position sensor connector.
(c) Turn the ignition switch ON.
CHECK:
Read CTP switch signal on the TOYOTA hand−held tester.
OK:
CTP switch signal: OFF
OK Confirm good connection at sensor.
If OK, replace throttle position sensor.
NG

Downloaded from www.Manualslib.com manuals search engine A00683
1
2
3
411
11 1 0
12 11
99E6 E6
(M/T)(A/T)5 V
VCC
VTA
IDL
E2
B+
E1E6 E6
E6 E6
E6E6
ON
For M/T
For A/TE6 Connector
E6 Connector
− DIAGNOSTICSENGINE (3RZ−FE)
DI−101
1996 TOYOTA T100 (RM449U)
5 Check for short in harness or ECM.
PREPARATION:
(a) Remove right cowl side trim (See page MF−50).
(b) Disconnect the E6 connector of the ECM.
(c) Turn the ignition switch ON.
HINT:
Throttle position sensor connector is disconnected.
CHECK:
Read CTP switch signal on TOYOTA hand−held tester.
OK:
CTP switch signal: OFF
OK Short in harness between ECM and throttle
position sensor, repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM.

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P24209
A00086
ON
ECM
1
2
3
411
11 1 0
11
99
Throttle Position
Sensor
E6 E6
(M/T)(A/T)5 V
VCC
VTA
IDL
E2B+
E1
12
(+)
(−)E6 E6
E6 E6
E6
E6
DI−102
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
OBD II scan tool (excluding TOYOTA hand−held tester):
1 Check for open in harness or ECM.
PREPARATION:
(a) Disconnect the throttle position sensor connector.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals 3 and 4 of throttle position
sensor connector.
OK:
Voltage: 9 − 14 V
OK Confirm good connection at sensor.
If OK, replace throttle position sensor.
NG
2 Check for open in harness and connector between throttle position sensor and
ECM (See page IN−26).
NG Open in harness between ECM and throttle
position sensor.
OK
Confirm connection at ECM.
If OK, replace ECM.

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DI−109
1996 TOYOTA T100 (RM449U)
DTC P1335 Crankshaft Position Sensor Circuit
Malfunction (during engine running)
CIRCUIT DESCRIPTION
Refer to DTC P0335 on page DI−66.
DTC No.DTC Detecting ConditionTrouble Area
P1335No crankshaft position sensor signal to ECM with engine
speed 1,000 rpm or moreOpen or short in crankshaft position sensor circuit
Crankshaft position sensor
ECM
WIRING DIAGRAM
Refer to DTC P0335 on page DI−66.
INSPECTION PROCEDURE
Refer to DTC P0335 on page DI−66.
DI0U2−01

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EFI Relay
EFI
AM2
AM1
ALT
BatteryIG Switch
IG
STIGN
Park/Neutral
Position Switch
(A/T)
Starter
Relay
Clutch
Start
Switch
(M/T)
StarterCircuit Opening Relay
L2
L1Fuel Pump
ECM
FC
Tr
STA
NE (STA Signal)
(NE Signal) From
Crankshaft
Position
Sensor DI−11 8
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
Fuel Pump Control Circuit
CIRCUIT DESCRIPTION
In the diagram below, when the engine is cranked, current flows from terminal ST of the ignition switch to
the starter relay coil, the starter relay switches on and current flows to coil L1 of the circuit opening relay.
Thus the circuit opening relay switches on, power is supplied to the fuel pump and the fuel pump operates.
When the STA signal and NE signal are input to the ECM, Tr is turned ON, current flows to coil L2 of the circuit
opening relay, the relay witches on and the fuel pump operates.
While the NE signal is generated (engine running), the ECM keeps Tr ON (circuit opening relay ON) and the
fuel pump also keeps operating.
DI0U8−03

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− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
7. ENGINE OPERATING CONDITION
NOTICE:
The values given below for ”Normal Condition” are representative values, so a vehicle may still be
normal even if its value varies from those listed here. So do not decide whether a part is faulty or
not solely according to the ”Normal Condition” here.
(a) CARB mandated signals.
TOYOTA hand−held tester displayMeasurement ItemNormal Condition*
FUEL SYS #1
Fuel System Bank 1
OPEN: Air−fuel ratio feedback stopped
CLOSED: Air−fuel ratio feedback operating
Idling after warming up: CLOSED
CALC LOAD
Calculator Load:
Current intake air volume as a proportion of max.
intake air volumeIdling: 14.9 − 21.3 %
Racing without load (2,500rpm): 16.5 ∼ 23.5%
COOLANT TEMP.Engine Coolant Temp. Sensor ValueAfter warming up: 80 − 95°C (176 − 203°F)
SHORT FT #1Short−term Fuel Trim Bank 10 ± 20 %
LONG FT #1Long−term Fuel Trim Bank 10 ± 20 %
ENGINE SPDEngine SpeedIdling: 650 − 750 rpm
VEHICLE SPDVehicle SpeedVehicle stopped: 0 km/h (0 mph)
IGN ADVANCEIgnition Advance:
Ignition Timing of Cylinder No.1Idling: BTDC 12.5 − 22.0°
INTAKE AIRIntake Air Temp. Sensor ValueEquivalent to Ambient Temp.
MAFAir Flow Rate Through Mass Air Flow Meter
Idling: 3.2 − 4.6 gm/sec.
Racing without load (2,500 rpm):
12.9 − 18.3 gm/sec.
THROTTLE POS
Voltage Output of Throttle Position Sensor
Calculated as a percentage:
0 V →0 %, 5 V →100 %Throttle valve fully closed: 7 − 11 %
Throttle valve fully open: 65 − 75 %
O2S B1, S1Voltage Output of Oxygen Sensor
Bank 1, Sensor 1Idling: 0.1 − 0.9 V
O2FT B1, S1Oxygen Sensor Fuel Trim Bank 1, Sensor 1
(Same as SHORT FT #1)0 ± 20 %
O2S B1, S2Voltage Output of Oxygen Sensor
Bank 1, Sensor 2Driving 50 km/h (31 mph): 0.1 − 0.9 V
*: 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.

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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.

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DI−140
− DIAGNOSTICSENGINE (5VZ−FE)
1996 TOYOTA T100 (RM449U)
DIAGNOSTIC TROUBLE CODE CHART
SAE CONTROLLED
HINT:
Parameters listed in the chart may not be exactly the same as your reading due to the type of instrument
or other factors.
If a malfunction code is displayed during the DTC check in check mode, check the circuit for that code listed
in the table below. For details of each code, turn to the page referred to under the ’’See Page ’’ for the respec-
tive ’’DTC No.’’ in the DTC chart.
DTC No.
(See Page)Detection ItemTrouble AreaMIL*Memory
P0100
(DI−149)Mass Air Flow Circuit
MalfunctionOpen or short in mass air flow meter circuit
Mass air flow meter
ECM

P0101
(DI−153)Mass Air Flow Circuit
Range/Performance
Problem
Mass air flow meter
P0110
(DI−154)Intake Air Temp. Circuit
MalfunctionOpen or short in intake air temp. sensor circuit
Intake air temp. sensor
ECM

P0115
(DI−158)Engine Coolant Temp. Circuit
MalfunctionOpen or short in engine coolant temp. sensor circuit
Engine coolant temp. sensor
ECM

P0116
(DI−162)Engine Coolant Temp. Circuit
Range/Performance ProblemEngine coolant temp. sensor
Cooling system
P0120
(DI−163)Throttle/Pedal Position
Sensor/Switch ”A” Circuit
MalfunctionOpen or short in throttle position sensor circuit
Throttle position sensor
ECM

P0121
(DI−168)Throttle/Pedal Position
Sensor/Switch ”A” Circuit
Range/Performance Problem
Throttle position sensor
P0125
(DI−169)Insufficient Coolant Temp. for
Closed Loop Fuel ControlOpen or short in heated oxygen sensor (bank 1 sensor 1)
circuit
Heated oxygen sensor (bank 1 sensor 1)

P0130
(DI−172)Heated Oxygen Sensor Circuit
Malfunction (Bank 1 Sensor 1)Heated oxygen sensor
Fuel trim malfunction
P0133
(DI−175)Heated Oxygen Sensor Circuit
Slow Response
(Bank 1 Sensor 1)
Heated oxygen sensor
P0135
(DI−176)Heated Oxygen Sensor Heater
Circuit Malfunction
(Bank 1 Sensor 1)Open or short in heater circuit of heated oxygen sensor
Heated oxygen sensor
ECM

P0136
(DI−178)Heated Oxygen Sensor Circuit
Malfunction
(Bank 1 Sensor 2)
Heated oxygen sensor
P0141
(DI−176)Heated Oxygen Sensor Heater
Circuit Malfunction
(Bank 1 Sensor 2)
Same as DTC No. P0135
*:  MIL lights up