sensor TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine P24206
P24205 BE6653A00082
ON
For M/T
For A/TSP1 (+)
SP1 (+)
AT7809
4.5 − 5.5 V
0
Turn wheel
− DIAGNOSTICSENGINE (3RZ−FE)
DI−93
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer (See page BE−38).
OK
2 Check voltage between terminal SP1 of ECM connector and body ground.
PREPARATION:
(a) Remove the right cowl side trim (See page MF−50).
(b) Disconnect the cruise control ECU connector.
(c) Shift the shift lever to neutral.
(d) Jack up the rear wheels on one side.
(e) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal SP1 of ECM connector and
body ground when the wheel is turned slowly.
OK:
Voltage is generated intermittently.
NG Check and repair harness and connector be-
tween combination meter and ECM.
OK
Check and replace ECM (See page IN−26).

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DI−97
1996 TOYOTA T100 (RM449U)
DTC P0510 Closed Throttle Position Switch Malfunction
CIRCUIT DESCRIPTION
Refer to DTC P0120 on page DI−39.
DTC No.DTC Detecting ConditionTrouble Area
P0510
Closed throttle position switch does not turn ON even once
when vehicle is driven
(2 trip detection logic)Open in closed throttle position switch circuit
Closed throttle position switch
ECM
HINT:
After confirming DTC P0510 use the TOYOTA hand−held tester to confirm the closed throttle position switch
signal from ”CURRENT DATA”.
Throttle ValveClosed Throttle Position Switch SignalMalfunction
Fully closedOFFOpen circuit
Fully openONShort circuit
WIRING DIAGRAM
Refer to DTC P0120 on page DI−39.
INSPECTION PROCEDURE
HINT:
If DTC P0110, P0115 and P0120 are output simultaneously, E2 (sensor ground) may be open.
TOYOTA hand−held tester:
1 Connect TOYOTA hand−held tester and read CTP switch signal.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and push the TOYOTA hand−held tester main switch ON.
CHECK:
Read CTP switch signal on the TOYOTA hand−held tester.
RESULT:
Throttle ValveClosed Throttle Position Switch SignalMalfunction
Fully closedOFFOpen circuit: Go to step 2
Fully openONShort circuit: Go to step 4
DI0U0−03

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A00084
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
E2B+
E1 E6 E6
E6 E6
E6 E6
DI−98
− DIAGNOSTICSENGINE (3RZ−FE)
1996 TOYOTA T100 (RM449U)
2 Check for open in harness or ECM.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Disconnect the throttle position sensor connector.
(c) Connect the sensor wire harness terminals between ter-
minals 3 and 4.
(d) Turn the ignition switch ON.
CHECK:
Read CTP switch signal on the TOYOTA hand−held tester.
OK:
CTP switch signal: ON
OK Confirm good connection at sensor.
If OK, replace throttle position sensor.
NG

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P19556
P19711
P19687
A00085
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
For M/T
For A/TE2
E2
IDL (+)
IDL (+)
E6 E6
E6 E6
E6 E6
− DIAGNOSTICSENGINE (3RZ−FE)
DI−99
1996 TOYOTA T100 (RM449U)
3 Check for open in harness or ECM.
PREPARATION:
(a) Remove the right cowl side trim (See page MF−50).
(b) Connect between terminals IDL and E2 of the ECM con-
nector.
HINT:
Throttle position sensor connector is disconnected.
Before checking, do a visual check and contact pressure check
for the connector (See page IN−26).
(c) Turn the ignition switch ON.
CHECK:
Read CTP switch signal on the TOYOTA hand−held tester.
OK:
CTP switch signal: ON
OK Open in harness between ECM and throttle
position sensor, repair or replace harness.
NG
Confirm connection at ECM.
If OK, replace ECM.

Downloaded from www.Manualslib.com manuals search engine A00682
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

Downloaded from www.Manualslib.com manuals search engine A00650
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

Downloaded from www.Manualslib.com manuals search engine DI−138
− 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.