1996 TOYOTA LAND CRUISER lock

D00076
Line
PressureDrain
Q08219
Q08226
D00087
(+)
(−)
(+)(−)
Air
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−161
1996 LAND CRUISER (RM451U)
DTC P0770 Shift Solenoid E Malfunction
(Shift Solenoid Valve SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, air −
flow meter and crankshaft position sensor to monitor the en-
gagement 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 shift solenoid valve SL operation.
PREPARATION:
Remove the shift solenoid valve SL from the valve body.
CHECK:
(a) Applying 490 kPa (5 kgf/cm2, 71 psi) of compressed air,
check that the solenoid valve opens.
(b) When battery voltage is supplied to the shift solenoid
valve, check it does not leak air.
NG Replace shift solenoid valve SL.
OK
DI5KQ−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

Q07464
Solenoid Valve SLTransmission
ECM
B+
R−L
3
EC2
Y 8
E4 SL
R−L
3
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−163
1996 LAND CRUISER (RM451U)
DTC P0773 Shift Solenoid E Electrical Malfunction
(Shift Solenoid Valve SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hyd\
raulic pressure
acting on the lock−up relay valve, which then controls operation of the lock −up clutch.
Fail Safe Function:
If the ECM detects a malfunction, it turns the shift solenoid valve SL O\
FF.
DTC No.DTC Detecting ConditionTrouble Area
P0773Open or short in shift solenoid valve SL circuit for 1 time
(2 trip detection logic) Open or short in shift solenoid valve SL circuit
 Shift solenoid valve SL
 ECM
WIRING DIAGRAM
DI5KS−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

Q07352 AT5605D00084
Rotor
No. 2 Vehicle Speed Sensor Rotor
No. 2 Vehicle Speed Sensor
AT8761
5 V/div.
0 V
2 msec./div.
DI−166
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
DTC P1700 Speed Sensor No. 2 Circuit Malfunction
(No. 2 Vehicle Speed Sensor)
CIRCUIT DESCRIPTION
The No. 2 vehicle speed sensor detects the rotation speed of the transmissi\
on output shaft and sends sig-
nals 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 r\
otor 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 vehic\
le
speed sensor and the throttle position sensor signal.
If the No. 2 vehicle speed sensor malfunctions, the ECM uses input signa\
ls from the No. 1 vehicle speed
sensor as a back −up signal.
DTC No.DTC Detecting ConditionTrouble Area
P1700
All conditions below are detected 500 times or more continu-
ously (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 sec.
(c) Park/neutral position switch: OFF (Other than P or N posi-
tion)
(d) Transfer position: Other than N position
 Open or short in No. 2 vehicle speed sensor circuit
 No. 2 vehicle speed sensor
 ECM
Reference:
Waveform between terminals SP2
+ and SP2− when the vehicle
speed is approx. 60 km/h (37 mph).
DI5KW−02
Brought to you by BirfMark
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
Brought to you by BirfMark
Brought to you by BirfMark
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
Brought to you by BirfMark
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
Brought to you by BirfMark
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
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
Brought to you by BirfMark
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