1996 TOYOTA T100 replace manual transmission

Downloaded from www.Manualslib.com manuals search engine Q07640
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−289
1996 TOYOTA T100 (RM449U)
DTC P0750, P0755 Shift Solenoid A/B Malfunction (Shift
Solenoid Valve No.1/No.2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
trouble of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0750
P0755During normal driving, gear required by ECM does not match
actual gear
(2 trip detection logic)Shift solenoid valve No.1/No.2 is stuck open or closed
Valve body is blocked up or stuck
HINT:
Check the shift solenoid valve No.1 when DTC P0750 is output and check shift solenoid valve No.2 when
DTC P0755 is output.
INSPECTION PROCEDURE
1 Check shift solenoid valve No.1 or No.2 operation.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No.1 or No.2.
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 positive voltage is supplied to the shift sole-
noid valve, check that the solenoid valve opens.
NG Replace shift solenoid valve No.1 or No.2.
OK
2 Check valve body (See page DI−282).
NG Repair or replace valve body.
OK
Repair or replace transmission (See page
AT−26, AT−33).
DI0VM−01

Downloaded from www.Manualslib.com manuals search engine Q06970
ECM
B+
B+ S1
S2 E2
E2 Transmission
Shift Solenoid
Valve No.1
Shift Solenoid
Valve No.21
211
17*
1
*2
*1: 3RZ−FE
*2: 5VZ−FEW
B−W W
BE7
E7 10
9*
2*1
B−W
B−W
To Cruise Control ECU
Q07641
Q07642D00006
3RZ−FE
5VZ−FES2
S1
S2
S1
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−291
1996 TOYOTA T100 (RM449U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Measure resistance between terminal S1 or S2 of ECM connector and body
ground.
PREPARATION:
Disconnect the connector from the ECM.
CHECK:
Measure resistance between terminal S1 or S2 of ECM connec-
tor and body ground.
OK:
Resistance: 11 − 15 Ω
OK Check and replace ECM.
NG

Downloaded from www.Manualslib.com manuals search engine Q07643
Q07644
Q05336
D00007
3RZ−FE
5VZ−FES2
S1 S2
S1
S1
S2
S2
S1
S1
DI−292
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
2 Check harness and connector between ECM connector and automatic transmis-
sion solenoid connector.
PREPARATION:
Disconnect the solenoid connector from the automatic trans-
mission.
CHECK:
Check the harness and connector between terminal S1 or S2
of ECM connector and terminal S1 or S2 of solenoid connector.
OK:
There is no open and no short circuit.
NG Repair or replace harness or connector.
OK

Downloaded from www.Manualslib.com manuals search engine Q07645
Q07646D00005
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−293
1996 TOYOTA T100 (RM449U)
3 Check shift solenoid valve No.1 or No.2.
PREPARATION:
(a) Remove the oil pan.
(b) Remove the shift solenoid valve No.1 or No.2.
CHECK:
(a) Measure resistance between solenoid connector and so-
lenoid body.
(b) Connect positive lead to terminal of solenoid connector,
negative lead to solenoid body.
OK:
(a) Resistance: 11 − 15 Ω
(b) The solenoid makes an operating noise.
NG Replace solenoid valve.
OK
Repair or replace solenoid wire.

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