1996 TOYOTA LAND CRUISER AM1

AT0YZ−01
Z16651
Key Interlock Solenoid
Stop Light Switch Shift Lock Solenoid
Shift Lock Control Switch
Shift Lock Control ECU
Ignition Switch
Shift Lock
Control ECU
Stop Light
Switch
Shift Lock Solenoid
Key Interlock Solenoid
Shift Lock
Control Switch
Battery Stop
Light
MAIN
FL FL
ALT
FL
AM1
STOP ACC
IG ECU − IG CIG
IG ACC
STP P1
P2
P EKLS
SLS
−
SLS+
AT
−12
−
AUTOMATIC TRANSMISSION SHIFT LOCK SYSTEM
796
Author: Date:
1996 LAND CRUISER (RM451U)
SHIFT LOCK SYSTEM
LOCATION
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Version 1.11 - 03/16/2010

P03788
CORRECT WRONG
Clearance
Z00038
Nippondenso Borroughs
−
CHARGING CHARGING SYSTEM
CH−3
1996 LAND CRUISER (RM451U)
(b) Check the fusible link and fuses for continuity.
Fusible link
MAIN 2.0 A
AM1 1.25 B
AM2 0.3 P
H−fuseAM1 50 A
FuseIGN 7.5 A
GAUGE 15 A
3. INSPECT DRIVE BELTS
(a) Visually check the drive belt for cracks, oiliness or wear.
Check that the belt does not touch the bottom of the pulley
groove.
If necessary, replace the drive belts as a set.
(b) Using a belt tension gauge, measure the belt tension. Belt tension gauge:
Nippondenso BTG−20 (95506 −00020)
Borroughts No. BT−33−73F
Drive belt tension:
New belt400 − 580 N (41.0 − 59.1 kgf, 90.4 − 130.2 lbf)
Used belt200 − 390 N (20.4 − 40.0 kgf, 45.0 − 88.2 lbf)
If the belt tension is not as specified, adjust it.
HINT:
”New belt” refers to a belt which has been used less than
5 minutes on a running engine.
”Used belt” refers to a belt which has been used on a run-
ning engine for 5 minutes or more.
After installing a new belt, run the engine for about 5 min-
utes and recheck the belt tension.
4. VISUALLY CHECK GENERATOR WIRING AND LIS- TEN FOR ABNORMAL NOISES
(a) Check that the wiring is in good condition.
(b) Check that there is no abnormal noise from the generator
while the engine is running.
5. INSPECT DISCHARGE WARNING LIGHT CIRCUIT
(a) Turn the ignition switch ”ON”. Check that the discharge warning light comes on.
(b) Start the engine. Check that the light goes off.
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Version 1.11 - 03/16/2010

P22478
Battery
FL AM1
Fusible Link
1F6
B−L
2
2 2
2
3
4
AM1
R/B No.2
Junction
Connector (J4)
Y Y
IG Switch
4 2
1 B−W
B−YFuse Block
GAUGE
Y
B
B 6IH14
B−W Park/Neutral
Position Switch
3
2 G−R G−W
O
O
IH2
To A/T Indicator Light
(Combination Meter)
Starter
1
S1 E7
E7
E7
17
16
22 NSW
E1B+
E1 E1
L
2 ECM
W
EA26
B
B
B−R
65 3
2IH1
21
B−W
IH2
DI−108
−
DIAGNOSTICS ENGINE
1996 LAND CRUISER (RM451U)
DTC P1780 Park/Neutral Position Switch Malfunction
CIRCUIT DESCRIPTION
The park/neutral position switch goes on when the shift lever is in the N o\
r P shift position. When it goes on
terminal NSW of the ECM is grounded to body ground via the starter relay, thus the terminal NSW voltage
becomes 0 V. When the shift lever is in the D, 2, L or R position, the park/neutral\
position switch goes off,
so the voltage of ECM, terminal NSW becomes battery voltage, the voltage of the ECM internal power
source. If the shift lever is moved from the N position to the D position, this signal is used for air\
−fuel ratio
correction and for idle speed control (estimated control), etc.
DTC No.DTC Detecting ConditionTrouble Area
P1780
2 or more switches are ON simultaneously for ”N”, ”2” and ”\
L”
position (2 trip detection logic)
 Short in park/neutral position switch circuit
 Park/neutral position switch
 ECMWhen driving under conditions (a) and (b) for 30 sec. or more
the 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
HINT:
After confirming DTC P1780 use the T OYOTA hand−held tester to confirm the PNP switch signal from ”CUR-
RENT DATA”.
WIRING DIAGRAM
DI5PV−02
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Brought to you by BirfMark
Version 1.11 - 03/16/2010

Q08577D00180
ECM
Combination Meter
Battery
Park/Neutral
Position Switch
Fuse Block
Starter
From
Battery L
2
R
NSW
E717
16 15
C12
G−W
E7E7
E7
L
R
2
C12
C12
R−B R−B
G−W
O
O
IH2
B−W 22
43
1
2B−W
IG1
ST1 2 4
AM1
2
2
2 2
1
2
AM1
3
J4
EA2 1 8
GAUGE
W
B F6
FLAM1
B+
IH2
IH1 IH1
B−L
B
6
Ignition Switch
4 R/B No. 2
6
6
B
B
Y
Y
15
B−R
B−WO
G−R R−B
S1
S2
10 4
11
2
3
21 7
Y
B−Y 1
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−169
1996 LAND CRUISER (RM451U)
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 th\
at the shift lever is in D position.
DTC No.DTC Detection ConditionTrouble Area
P1780
2 or more switches are ON simultaneously for N, 2 and L posi-
tions (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 sec. or
more, the 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. or more
WIRING DIAGRAM
DI5KY−02
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Version 1.11 - 03/16/2010

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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Brought to you by BirfMark
Version 1.11 - 03/16/2010

Q08584
ECM
Pattern Select Switch*
(PWR Mode Switch)
PWR
E7
P−B
B−W
PWR Indicator Light
(Combination Meter)
ID2
63
C12
13
16
20
15
B
J6
EGU−IG
Fuse Block
Ignition Switch
EA2
AM1
IG1
Fuse Block
AM1
P−B
P−B
6 B
B B ID2
B−W
B−W
3
1
B−Y
2
4
222
1 FL AM1
F6
Battery
2
2
3
4
WB −L
R/B No. 2
R/B No. 2
Pattern Select Switch (PWR Mode Switch)
When the PWR mode switch is pushed in, the switch is contacted and
the PWR mode is celected.
To cancel the PWR mode, push the PWR mode switch onec again.
*:
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−179
1996 LAND CRUISER (RM451U)
Pattern Select Switch Circuit (PWR Mode Switch)
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER pattern\
s, 2 position, L position
and the lock −up patterns. Following the programs corresponding to the signals from th\
e pattern select
switch, the park/neutral position switch and other various sensors, the ECM swi\
tches the solenoid valves
ON and OFF, and control the transmission gear change and the lock −up clutch operation.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check operation of PWR indicator light.
PREPARATION:
Check if the PWR indicator light normally when the PWR mode switch is set to NORM and PWR position.
NG Check and repair PWR indicator light.
OK
DI5L6−03
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Version 1.11 - 03/16/2010

Q08580
R−W
J1
A
W 5BRY
IG3
O
Ignition Switch
Fuse Block
GAUGE
Pattern Select Switch*
(2nd Start Switch)
B ECM
18
IH2 12
HI
1
113
9
E4
2C12
Battery
FL AM1
Fuse Block
B−L
W
B−Y
2
4
F6
6 A
A
Y
3
1
E4HOLD
2
EA2
AM1
22
1
AM1 IG1
B
C12
ID3 IH2
O
R−W
2 2
3
42nd STRT Indicator Light
(Combination Meter)
12
Y
R/B No. 2 R/B No. 2
Pattern Select Switch (2nd Start Switch)
When the 2nd start switch is pushed, the switch is contacted and the 2nd\
mode is selected.
To cancel the 2nd start, push the 2nd start swtch once again. The 2nd star\
t is automatically cancelled
out when the ignition switch is turned OFF.
*:
DI−182
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
Pattern Select Switch Circuit (2nd Start Switch) & 2nd Start
Switch Indicator Light Circuit
CIRCUIT DESCRIPTION
When 2nd start mode is selected with the pattern select switch, the ECM cont\
rols the solenoid valves and
the transmission starts from 2nd gear.
In D position, the transmission automatically shifts up through 3rd to O\
/D as usual.
In 2nd position, the transmission is held in 2nd gear.
WIRING DIAGRAM
DI5L8−03
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Brought to you by BirfMark
Version 1.11 - 03/16/2010

Q08580
R-W
J1
A
W 5BRY
IG3
O
Ignition Switch
Fuse Block
GAUGE
(*) Pattern Select Switch
(2nd Start Switch)
B
ECM
18
IH2 12
HI
1
113
9
E4
2
C12
Battery
FL AM1
Fuse Block
B-L
W
B-Y
2
4
F6
6 A
A
Y
3
1
E4HOLD
2
EA2
AM1
22
1
AM1 IG1
B
C12
IG3 IL2
O
R-W
2 2
3
42nd STRT Indicator Light
(Combination Meter)
12
Y
R/B No.2 R/B No.2
DI-185
-
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
Pattern Select Switch Circuit (2nd Start Switch) & 2nd Start
Switch Indicator Light Circuit
CIRCUIT DESCRIPTION
When 2nd start mode is selected with the pattern select switch, the ECM cont\
rols the solenoid valves and
the transmission starts from 2nd gear.
In D position, the transmission automatically shifts up through 3rd to O\
/D as usual.
In 2nd position, the transmission is held in 2nd gear.
WIRING DIAGRAM
(*) Pattern Select Switch (2nd Start Switch)
When the 2nd start switch is pushed, the switch is contacted and the 2nd\
mode is selected.
To cancel the 2nd start, push the 2nd start switch once again. The 2nd sta\
rt is automatically cancelled out
when the ignition switch is turned OFF.
DI5L8-02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010