1996 TOYOTA LAND CRUISER Transmission

Q07657D00109
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−171
1996 LAND CRUISER (RM451U)
2 Check park/neutral position switch.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the park/neutral position switch connector.
CHECK:
Check the continuity between each terminal shown below when
the shift lever is moved to each position.
OK:
Shift PositionTerminal No. to continuityTerminal No. to continuity
P4 − 75 − 6
R4 − 8−
N4 − 105 − 6
D4 − 9−
22 − 4−
L3 − 4−
NG Replace park/neutral position switch.
OK
Repair or replace harness and connector between battery and park/neutral posit\
ion switch, and
park/neutral position switch and ECM (See page IN−28).
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Q07467
Cruise Control ECUOD OD1B+
G−O
9 18ECM
E7
BE3840
Q07658 D00091
ON
(−) (+) OD1
DI−172
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
O/D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving with cruise control activated, in order to minimize gear shifting and provide\
smooth cruising on
an uphill, overdrive may be prohibited temporarily in some conditions.
The cruise control ECU sends O/D cut signals to the ECM as necessary and\
the ECM cancels overdrive
shifting until these signals are discontinued.
(For details, see the Cruise Control section, page DI−292)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check voltage between terminal OD1 of ECM and body ground.
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminal OD1 of the ECM and
body ground.
OK:
Voltage: 9 − 14 V
OK Proceed to next circuit inspection shown on problem symptoms table (See page DI−147 ).
NG
DI5L0−02
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BE3840
Q07660 D00015
ON
OD
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−173
1996 LAND CRUISER (RM451U)
2 Check voltage between terminal OD of cruise control ECU harness side connec-
tor and body ground.
PREPARATION:
(a) Disconnect the cruise control ECU connector.
(b) Turn ignition switch ON.
CHECK:
Measure the voltage between terminal OD of the cruise control
ECU harness side connector and body ground.
OK:
Voltage: 9 − 14 V
OK Check and replace cruise control ECU.
NG
3 Check harness and connector between cruise control ECU and ECM (See pag\
e IN−28 ).
NG Repair or replace wire harness or connector.
OK
Check and replace ECM.
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Q08582
ECM
O/D OFF Indicator Light
(Combination Meter)
Ignition Switch
Fuse BlockO/D Main Switch* E7
2
P−L
B−L Y
GAUGE
Battery B+
W
2
Y
3 2
4 4
2
2 2
4
W−B
6
FL AM1
B−Y
22
E6 A
A
EA2 C12
C12
19
OD2
B ID2
J1
B 9
1
1 8
3
Fuse Block
P−L
P−L
AM1
2
BF
R/B No. 2 R/B No. 2
O/D Main switch
Contact go off with switch pushed in.
Contact go on with switch once again.
*:
DI−174
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
O/D Main Switch & O/D OFF Indicator Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch contacts go off when the switch is pushed in and come on when it is pushed once again.\
In O/D main switch OFF position, the O/D OFF indicator lights up, and the \
ECM prohibits shifting to O/D.
WIRING DIAGRAM
DI5L3−03
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D00077 BE3840D00092
ON
ON
OFF
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−175
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
O/D OFF indicator light does not light up:
1 Check operation of O/D main switch.
CHECK:
(a) Turn the ignition switch ON.
(b) Check the O/D OFF indicator light when the O/D main
switch is pushed in to ON.
OK:
O/D OFF indicator light goes off
CHECK:
Check the O/D OFF indicator light when the O/D main switch is
pushed again to OFF.
OK:
O/D OFF indicator light lights up
NG Go to step 4.
OK
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BE3840
Q08230D00093
ON
OD2
DI−176
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
2 Check OVRDRIVE CUT SW2 signal.
When using TOYOTA hand −held tester:
PREPARATION:
(a) Remove the fuse box cover.
(b) Connect a TOYOTA hand−held tester to the DLC3.
(c) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
CHECK:
Read the OVRDRIVE CUT SW2 signal on the TOYOTA hand −
held tester.
OK:
O/D Main SwitchOVRDRIVE CUT SW2 Signal
O/D ON (pushed in)OFF
O/D OFF (pushed out)ON
When not using TOYOTA hand −held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check the voltage between terminal OD2 of the ECM and body
ground.
OK:
O/D Main SwitchVoltage
O/D ON9 − 14 V
O/D OFFBelow 3 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−147 ).
NG
3 Check harness and connector between O/D OFF indicator light and ECM (Se\
e page IN−28 ).
NG Repair or replace harness or connector.
OK
Check and replace ECM.
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Q08233
Q08233
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−177
1996 LAND CRUISER (RM451U)
4 Check O/D main switch.
CHECK:
(a) Disconnect the O/D main switch connector.
(b) Measure the resistance between terminals 2 and 4 of the
O/D main switch connector.
OK:
O/D Main SwitchResistance
ON∞ Ω〈 open)
OFF0 Ω (continuity)
NG Replace O/D main switch.
OK
Check and replace the combination meter
(See page BE−32 ).
O/D OFF indicator light remains ON:
1 Check O/D main switch.
CHECK:
(a) Disconnect the O/D main switch connector.
(b) Measure the resistance between terminals 2 and 4 of the
O/D main switch connector.
OK:
O/D Main SwitchResistance
ON∞ Ω〈 open)
OFF0 Ω (continuity)
NG Replace O/D main switch.
OK
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DI−178
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
2 Check harness and connector between O/D OFF indicator light and O/D main
switch, and O/D OFF indicator light and ECM (See page IN−28).
NG Repair or replace harness or connector.
OK
Check and replace ECM.
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Version 1.11 - 03/16/2010