TOYOTA T100 1996 Factory Service Manual

Downloaded from www.Manualslib.com manuals search engine Q07647
Q07648D00008
3RZ−FE
SL
SL 5VZ−FE
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−297
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Measure resistance between terminal SL of ECM connector and body ground.
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Measure resistance between terminal SL of ECM connector
and body ground.
OK:
Resistance: 11 − 15 Ω
OK Check and replace ECM.
NG

Downloaded from www.Manualslib.com manuals search engine Q07649
Q07650
Q05336
D00009
3RZ−FE
SL
5VZ−FESL
SL
SL
DI−298
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
2 Check harness and connector between ECM connector and automatic
transmission solenoid connector.
PREPARATION:
Disconnect the solenoid connector from the transmission.
CHECK:
Check the harness between terminal SL of ECM connector and
terminal SL of transmission solenoid connector.
OK:
There is no open or short circuit.
NG Repair or replace tharness or connector.
OK

Downloaded from www.Manualslib.com manuals search engine Q07645
Q07646D00005
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−299
1996 TOYOTA T100 (RM449U)
3 Check shift solenoid valve SL.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve SL.
CHECK:
(a) Measure resistance between terminal SL of shift solenoid
valve and solenoid body.
(b) Connect positive lead to terminal of solenoid connector,
negative lead to solenoid body.
OK:
(a) Resistance: 11 − 15 Ω
(b) The shift solenoid valve SL makes operation
noise.
NG Replace shift solenoid valve SL.
OK
Repair or replace solenoid wire.

Downloaded from www.Manualslib.com manuals search engine D00010
Rotor
No.2 Vehicle Speed SensorRotor
No.2 Vehicle Speed Sensor
ECM
AT8761
0 V
2 msec./div.5 V/div. DI−300
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
DTC P1700 Speed Sensor No.2 Circuit Malfunction
(No.2 Vehicle Speed Sensor) (3RZ−FE)
CIRCUIT DESCRIPTION
The No.2 vehicle speed sensor detects the rotation speed of the transmission output shaft and sends signals
to the ECM. The ECM determines the vehicle speed based on these signals.
An AC voltage is generated in the No.2 vehicle speed sensor coil as the rotor mounted on the output shaft
rotates, and this voltage is sent to the ECM.
The gear shift point and lock−up timing are controlled by the ECM based on the signals from this vehicle
speed sensor and the throttle position sensor signal.
If the No.2 vehicle speed sensor malfunctions, the ECM uses input signals from the No.1 vehicle speed sen-
sor as a back−up signal.
DTC No.DTC Detecting ConditionTrouble Area
P1700
All conditions below are detected 500 times or more
continuously:
(2 trip detection logic)
(a) No signal from No.2 vehicle speed sensor is input to ECM
while 4 pulses of No.1 vehicle speed sensor signal is sent
(b) Vehicle speed: 9 km/h (5.6 mph) or more for as least 4
seconds
(c) Park/neutral position switch: OFF (Other than P or N)
Open or short in No.2 vehicle speed sensor circuit
No.2 vehicle speed sensor
ECM
Reference
Wavefrom between terminals SP2
+ and SP2− when vehicle
speed is approx. 60 km/h (37 mph).
DI0VZ−01

Downloaded from www.Manualslib.com manuals search engine Q06835
ECM
SP2
+
SP2−
E5
E5 10
4 BR−R
B−R No.2 Vehicle Speed Sensor V1
V1 1
2
Q08458
SP2−
SP2+
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−301
1996 TOYOTA T100 (RM449U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check vehicle speed value or resistance between terminals SP2+ and SP2− of
ECM.
When using OBD II scan tool or TOYOTA hand−held tester:
PREPARATION:
(a) Connect an OBD II scan tool or TOYOTA hand−held tes-
ter to the DLC3.
(b) Start the engine and OBD II scan tool or TOYOTA hand−
held tester main switch ON.
CHECK:
Drive the vehicle and read vehicle speed value.
OK:
Vehicle speed matches tester speed value.
When not using OBD II scan tool or TOYOTA hand−held tes-
ter:
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Check resistance between terminals SP2+ and SP2− of ECM.
OK:
Resistance: 560 − 680 Ω
OK Check and replace ECM.
NG

Downloaded from www.Manualslib.com manuals search engine Q08218
Magnet
DI−302
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
2 Check No.2 vehicle speed sensor.
PREPARATION:
Remove the No.2 vehicle speed sensor from the transmission.
CHECK:
(a) Measure resistance between terminals 1 and 2 of vehicle
speed sensor.
(b) Check voltage between terminals 1 and 2 of vehicle
speed sensor when a magnet is put close to the front end
of the vehicle speed sensor then taken away quickly.
OK:
(a) Resistance: 560 − 680 Ω
(b) Voltage is generated intermittently.
HINT:
The voltage generated is extremely low.
NG Replace No.2 vehicle speed sensor.
OK
Check and repair the harness and connector
between ECM and No.2 vehicle speed
sensor (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine Q06437Q06436D00222No.2 Vehicle Speed SensorSensor Rotor
Reed Switch
”ON”
Permanent Magnet
D00251
GND2 V/div.
10 msec. /division
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−303
1996 TOYOTA T100 (RM449U)
DTC P1700 Speed Sensor No.2 Circuit Malfunction
(No.2 Vehicle Speed Sensor) (5VZ−FE)
CIRCUIT DESCRIPTION
A rotor with built in permanent magnet is mounted on the output shaft. Every time the output shaft (and thus
the rotor) makes one complete revolution, the permanent magnet acticates the reed switch, which is built
into the No.2 vehicle speed sensor, causing it to generate signal. This shignal, which corresponds to the
governor pressure in a conventional automatic transmission, is sent to the ECM, which uses it in controlling
the shift points and the operation of the look−up clutch.
This sensor outputs one pulse for every one revolution of the output shaft.
If the No.2 vehicle speed sensor malfunctions, the ECM uses input signals from the No.1 vehicle speed sen-
sor as a back−up signal.
DTC No.DTC Detecting ConditionTrouble Area
P1700
All conditions below are detected 500 times or more
continuously:
(2 trip detection logic)
(a) No signal from No.2 vehicle speed sensor is input to ECM
while 4 pulses of No.1 vehicle speed sensor signal is sent
(b) Vehicle speed: 9 km/h (5.6 mph) or more for as least 4
seconds
(c) Park/neutral position switch: OFF (Other than P or N)
(d) Transfer position: Other than N position (A340F only)
Open or short in No.2 vehicle speed sensor circuit
No.2 vehicle speed sensor
ECM
Reference
Wavefrom between terminals SP2 and E1 when vehicle speed
is approx. 60 km/h (37 mph).
DI0W1−01

Downloaded from www.Manualslib.com manuals search engine Q06836
No.2 Vehicle
Speed SensorBR−R
BR
BR
SP2
E1ECM
E5 E6
V1
V1
4 − 6 V
EB
2
19
16
BR
Q07653
E1
SP2
DI−304
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check vehicle speed value or resistance between terminals SP2 and E1 of ECM.
When using OBD II scan tool or TOYOTA hand−held tester:
PREPARATION:
(a) Connect an OBD II scan tool or TOYOTA hand−held tes-
ter to the DLC3.
(b) Start the engine and OBD II scan tool or TOYOTA hand−
held tester main switch ON.
CHECK:
Drive the vehicle and read vehicle speed value.
OK:
Vehicle speed matches tester speed value.
When not using OBD II scan tool or TOYOTA hand−held tes-
ter:
PREPARATION:
(a) Disconnect the connector from the ECM.
(b) Shift the shift lever to N position.
(c) Jack up the rear wheels on one side.
CHECK:
Check that there is continuity between terminals SP2 and E1
of ECM while slowly turning the jacked−up wheel by hand.
OK:
Resistance: Changes between 0 Ω and ∞ Ω
OK Check and replace ECM.
NG

Downloaded from www.Manualslib.com manuals search engine Q07654
Magnet
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−305
1996 TOYOTA T100 (RM449U)
2 Check No.2 vehicle speed sensor.
PREPARATION:
Remove the No.2 vehicle speed sensor from the transmission.
CHECK:
Check that there is continuity between terminals of No.2 vehicle
speed sensor connector when a magnet is put close to it as
shown.
OK:
Resistance: Changes between 0 Ω and ∞ Ω
NG Replace No.2 vehicle speed sensor.
OK
Check and repair harness and connector between ECM and No.2 vehicle speed sensor
(See page IN−26). Check and repair sensor rotor.

Downloaded from www.Manualslib.com manuals search engine Q10012
ECM Combination Meter
Park/Neutral
Position Switch
Dio
Diode
Ignition Switch
Integration
Relay J/B No.1
Starter
Relay
R/B No.2 R/B No.2
Battery
GAUGECIG
ACC
IG1
NSW
AM1ALTB+ E4
E4
E4L
2
R R2L
15
16
17
E4 E7 26
5C12 C12 C12
P1
P1P1
P1
P1
P1
IE2
IE2
IE2 IE2
IE1
IA3
1A 1AIE1
R−B P−G
V−W
R−W P−G V−W
R−B
P−GV−W
B−O
B−Y
B−O
B−Y B−Y
B−O B−O GR−R
B−O
WW WW W
BB
W−B L−R
B−Y
B−O B−Y
B−O B−Y
33
2
6
8
616 17
154
5 3
12
2
2 6
5
22 21
3
2 4
2
11
9
1 2
14AM1 ST1
*1
3
2
1
*1
*1*2
*2
*2 *1
*1 *1*2
*2
*2
*1
*2 *1
*2
IC
*1
*2
22
3RZ−FE
5VZ−FE
*1
*2
14 22 DI−306
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
DTC P1780 Park/Neutral Position Switch Malfunction
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
The ECM receives signals (NSW, R, 2 and L) from the park/neutral position switch. When the signal is not
sent to the ECM from the park/neutral position switch, the ECM judges that the shift lever is in D position.
DTC No.DTC Detection ConditionTrouble Area
P1780
2 or more switches are ON simultaneously for R, N, 2 and L
positions
(2 trip detection logic)
Short in park/neutral position switch circuit
Park/neutral position switch
ECMWhen driving under conditions (a), (b) and (c) for 30 seconds
or more, park/neutral position switch is ON (N position)
(2 trip detection logic)
(a) Vehicle speed: 70 km/h (44 mph) or more
(b) Engine speed: 1,500 ∼ 2,500 rpm
(c) Engine load: 0.6 g/rev
WIRING DIAGRAM
DI0W5−02