1996 TOYOTA T100 check engine

Downloaded from www.Manualslib.com manuals search engine Q06995
Drain
Line
Pressure
Q07640
DI−294
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
DTC P0770 Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the Throttle position sensor,
mass air flow meter and crankshaft position sensor to monitor
the engagement condition of the lock−up clutch.
Then the ECM compares the engagement condition of the
lock−up clutch with the lock−up schedule in the ECM memory
to detect mechanical trouble of the shift solenoid valve SL,
valve body and torque converter clutch.
DTC No.DTC Detecting ConditionTrouble Area
P0770
Lock−up does not occur when driving in the lock−up range
(normal driving at 80 km/h [50 mph]), or lock−up remains ON
in the lock−up OFF range
(2 trip detection logic)Shift solenoid valve SL is stuck open or closed
Valve body blocked up or stuck
Lock−up clutch
INSPECTION PROCEDURE
1 Check solenoid valve SL operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve SL.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve does not leak air.
(b) When battery voltage is supplied to the shift solenoid
valve, check that the solenoid valve opens.
NG Replace solenoid valve SL.
OK
DI0VR−01

Downloaded from www.Manualslib.com manuals search engine − DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−295
1996 TOYOTA T100 (RM449U)
2 Check valve body (See page DI−282).
NG Repair or replace valve body.
OK
Replace torque converter clutch
(See page AT−26, AT−33).

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 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 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