1996 TOYOTA LAND CRUISER Position

−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−151
1996 LAND CRUISER (RM451U)
Slip or shudder (Forward and reverse)
1. Throttle cable
2. Transmission control rod
3. Oil strainer
4. Pressure relief valve
5. Off
−vehicle repair matrix chartDI−131
DI−131

−
Slip or shudder (Particular position)
1. Throttle cable
2. Transmission control rod
3. Off −vehicle repair matrix chartDI−131
DI−131
−
No engine braking (1st (L position))1. Low coast modulator
2. Off −vehicle repair matrix chart
−
No engine braking (2nd (2 position))1. 2nd coast modulator
2. Off −vehicle repair matrix chart
−
No kick− down1. 1−2 shift valve
2. 2 −3 shift valve

Chapter 3: Off −Vehicle Repair
(  : A340F, A343F Automatic Transmission Repair Manual Pub. No. RM479U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward position and reverse posi-
tion1. O/D one− way clutch (F0)
2. O/D planetary gear unit
3. Torque converter clutch

AT −26
Vehicle does not move in R position
1. 2nd coast brake (B1)
2. Front and rear planetary gear unit
3. Direct clutch (C
2)
4. 1st and reverse brake (B
3)




Vehicle does not move in D, 2 and L positions1. Forward clutch (C1)
Vehicle does not move in D and 2 positions1. No. 2 one− way clutch (F2)
Vehicle does not move in 2 position1. 1st and reverse brake (B3)
Vehicle does not move in L position
1. 2nd brake (B2)
2. 2nd coast brake (B
1)
3. Direct clutch (C
2)



No up− shift (1st → 2nd)1. 2nd brake (B2)
2. No. 1 one− way clutch (F
1)


No up−shift (2nd → 3rd)1. Direct clutch (C2)
No up−shift (3rd → O/D)1. O/D brake (B0)
No down−shift (2nd → 1st)1. 2nd brake (B2)
Lock−up does not engage or lock −up does not disengage1. Torque converter clutchAT −26
Harsh engagement (N → D)
1. Forward clutch (C1)
2. O/D one− way clutch (F
0)
3. No. 2 one− way clutch (F
2)



Harsh engagement (N → R)
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. O/D one− way clutch (F
0)



Harsh engagement (2nd → 3rd)1. Direct clutch (C2)
Harsh engagement (3rd → O/D)1. O/D brake (B0)
2. O/D planetary gear unit

Harsh engagement (O/D → 3rd)1. O/D one− way clutch (F0)
Harsh engagement (Lock −up)1. Torque converter clutchAT −26
Slip or shudder (Forward and reverse (After warm −up))
1. Torque converter clutch
2. O/D one− way clutch (F
0)
3. O/D direct clutch (C
0)
AT −26


Slip or shudder (Forward and reverse (Just after engine starts))1. Torque converter clutchAT −26
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

DI−152
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
Slip or shudder (R position)
1. Direct clutch (C2)
2. 1st and reverse brake (B
3)
3. O/D one− way clutch (F
0)



Slip or shudder (1st)
1. Forward clutch (C1)
2. No. 2 one− way clutch (F
2)
3. O/D one− way clutch (F
0)



Slip or shudder (2nd)
1. 2nd brake (B2)
2. 2nd coast brake (B
1)
3. No. 1 one− way clutch (F
1)



Slip or shudder (3rd)1. Direct clutch (C2)
Slip or shudder (O/D)1. O/D brake (B0)
No engine braking (1st − 3rd)1. O/D direct clutch (C0)
No engine braking (1st)1. 1st and reverse brake (B3)
No engine braking (2nd)1. 2nd coast brake (B1)
Poor acceleration (All positions)1. Torque converter clutchAT −26
Poor acceleration (O/D)1. O/D brake (B0)
2. O/D planetary gear unit

Poor acceleration (Other than O/D)1. O/D brake (B0)
Poor acceleration (Other than 2nd)1. 2nd coast brake (B1)
2. No. 1 one− way clutch (F
1)


Poor acceleration (1st and 2nd)1. O/D one−way clutch (F0)
Poor acceleration (L and R positions)1. 1st and reverse brake (B3)
Poor acceleration (R position)1. Forward clutch (C1)
Engine stalls when starting off or stopping1. Torque converter clutchAT−26
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

Q08221 Q08220D00081
(+) (−)
(+) (−)Air
DI−156
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
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 gea\
r position (1st, 2nd, 3rd or O/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM mem\
ory to detect mechanical
trouble of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0750
P0755During normal driving, the gear required by the ECM does not
match the 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 shift solenoid valve does not leak air.
(b) When battery positive voltage is supplied to the shift sole-
noid valves, check they opens.
NG Replace shift solenoid valve No. 1 or No. 2.
OK
2 Check valve body (See page DI−147 ).
NG Repair or replace valve body.
OK
Repair transmission (See page AT −18).
DI5KM−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

Position
NORMALSHIFT SOLENOID NO. 1
MALFUNCTIONING
Solenoid valve
No. 1 No. 2GearSHIFT SOLENOID NO. 2
MALFUNCTIONING
BOTH SOLENOIDS MAL-
FUNCTIONINGSolenoid valve
No. 1 No. 2 GearSolenoid valve
No. 1 No. 2 GearGear when shift selector is
manually operated
D
2
LON
ON
OFF
ON
ON
OFF
OFF OFF
ON
ON OFF
ON
ON
OFF
ON
ON ON OFF 1st
2nd
3rd
O/D
1st
2nd
3rd
1st
2nd X
X
X
X
X
X
X
X
X
ON
ON
OFF
OFF ON
ON
ON
3rd 3rd
O/D
3rd
3rd
1st
2nd X
X
X
X
X
X
X
X
XOFF
OFF
ON
ON OFF OFF
OFF
ON
ON
1st
O/D
3rd 1st O/D O/D
3rd
1st
1st
O/D O/D O/D
O/D
3rd 3rd
3rd
1st
1st
X: Malfunctions ON
ON
3rd
3rd
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
DI−157
1996 LAND CRUISER (RM451U)
DTC P0753, P0758 Shift Solenoid A/B Electrical Malfunc-
tion (Shift Solenoid Valve No. 1/No. 2)
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the shift solenoid valves No. 1 and No\
.
2 controlled by ECM. If an open or short circuit occurs in either of the \
shift solenoid valves, the ECM controls
the remaining normal shift solenoid valve to allow the vehicle to be operat\
ed smoothly (Fail safe function).
Fail Safe Function:
If either of the shift solenoid valve circuits develops an open or short, \
the ECM turns the other shift solenoid
ON and OFF to shift to the gear positions shown in the table below. The ECM also turns the shift solenoid
valve SL OFF at the same time. If both solenoids are malfunction, hydraulic contr\
ol cannot be done electroni-
cally and must be done manually.
Manual shifting as shown in the following table must be done (In the case of a short circuit, the E\
CM stops
sending current to the short circuited solenoid).
HINT:
Check the shift solenoid valve No. 1 when DTC P0753 is output and check \
the shift solenoid valve No. 2
when DTC P0758 is output.
DTC No.DTC Detecting ConditionTrouble Area
P0753
P0758
The ECM checks for an open or short circuit in the shift sole-
noid valves No. 1 and No. 2 circuit when it changes
The ECM records DTC P0753 or P0758 if condition (a) or (b) is
detected once, but it does not light up MIL
After ECM detects condition (a) or (b) continuously 8 times or
more in one− trip, it causes the MIL light up until condition (a) or
(b) disappears
After that, if the ECM detects condition (a) or (b) once, it starts
lighting up MIL again
(a) Solenoid resistance is 8 Ω or less (short circuit) when the
solenoid is energized
(b) Solenoid resistance is 100 k Ω or more (open circuit) when
the solenoid is not energized
 Open or short in shift solenoid valve No. 1/No. 2 circuit
 Shift solenoid valve No. 1/No. 2
 ECM
DI5KO−02
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010

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

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

BE3840
Q08479D00090
ON
(−)
(+)
NSWR
2
L
Position
P, NR
D
2
L NSW
−
Body ground R −

Body ground 2 −

Body ground L −

Body ground
Below 1.5 V
7.5 − 14 V
7.5 −
14 V*
7.5 − 14 V
Below 1.5 V
Below 1.5 V
Below 1.5 V Below1.5 V
Below 1.5 V
Below 1.5 V Below1.5 V
Below 1.5 V
9 − 14 V
Below 1.5 V
Below 1.5 V
Below 1.5 V
9 −
14 V
9 − 14 V
9 − 14 V Below 1.5 V
DI−170
−
DIAGNOSTICS AUTOMATIC TRANSMISSION
1996 LAND CRUISER (RM451U)
INSPECTION PROCEDURE
1 Read PNP, REVERSE, 2ND and LOW signals.
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:
Shift lever into the P, R, N, 2 and L positions, and read the PNP,
REVERSE, 2 and L signals on the TOYOTA hand −held tester.
OK:
Shift positionSignal
22ND OFF → ON
LLOW OFF → ON
RREVERSE OFF → ON
P, NPNP SW OFF → ON
When not using TOYOTA hand −held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Measure the voltage between terminals NSW, 2 and L of ECM
and body ground when the shift lever is shifted to the following
positions.
OK:
*: The voltage will drop slightly due to lighting up of the back up
light.
OK Check and replace ECM.
NG
Brought to you by BirfMark
Brought to you by BirfMark
Version 1.11 - 03/16/2010