1998 TOYOTA LAND CRUISER clutch

AT5436
SST
AT07X-03
AT5437
Hold
Turn
Free
Lock
Q04237
AT4184
AT-34
- AUTOMATIC TRANSMISSIONTORQUE CONVERTER CLUTCH AND DRIVE PLATE
1888 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TORQUE CONVERTER CLUTCH
AND DRIVE PLATE
INSPECTION
1. INSPECT ONE-WAY CLUTCH
(a) Install SST so that it fits in the notch of the converter hub
and outer race of the one-way clutch.
SST 09350-30020 (09351-32020)
(b) Press on the serrations of stator with a finger and rotate
it.
(c) Check if it rotates smoothly when turned clockwise and
locks up when turned counterclockwise.
If necessary, clean the converter clutch and retest the one-way
clutch.
Replace the converter clutch if the clutch still fails in the test.
2. MEASURE DRIVE PLATE RUNOUT AND INSPECT
RING GEAR
Set up a dial indicator and measure the drive plate runout.
Maximum runout: 0.20 mm (0.0079 in.)
If runout is not within the specification or if the ring gear is dam-
aged, replace the drive plate. If installing a new drive plate, note
the orientation of the spacers and tighten the bolts.
Torque:
1st: 49 N´m (500 kgf´cm, 36 ft´lbf)
2nd: Turn extra 90°
3. MEASURE TORQUE CONVERTER CLUTCH SLEEVE
RUNOUT
(a) Temporarily mount the torque converter clutch to the drive
plate.
Set up a dial indicator and measure the torque converter
clutch sleeve runout.
Maximum runout: 0.30 mm (0.0118 in.)
If runout is not within the specification, correct it by reorienting
the installation of the torque converter clutch.
If excessive runout cannot be corrected, replace the torque
converter clutch.
(b) Remove the torque converter clutch.

AT5436
SST
AT07X-03
AT5437
Hold
Turn
Free
Lock
Q04237
AT4184
AT-34
- AUTOMATIC TRANSMISSIONTORQUE CONVERTER CLUTCH AND DRIVE PLATE
1888 Author
: Date
:
2004 LAND CRUISER (RM1071U)
TORQUE CONVERTER CLUTCH
AND DRIVE PLATE
INSPECTION
1. INSPECT ONE-WAY CLUTCH
(a) Install SST so that it fits in the notch of the converter hub
and outer race of the one-way clutch.
SST 09350-30020 (09351-32020)
(b) Press on the serrations of stator with a finger and rotate
it.
(c) Check if it rotates smoothly when turned clockwise and
locks up when turned counterclockwise.
If necessary, clean the converter clutch and retest the one-way
clutch.
Replace the converter clutch if the clutch still fails in the test.
2. MEASURE DRIVE PLATE RUNOUT AND INSPECT
RING GEAR
Set up a dial indicator and measure the drive plate runout.
Maximum runout: 0.20 mm (0.0079 in.)
If runout is not within the specification or if the ring gear is dam-
aged, replace the drive plate. If installing a new drive plate, note
the orientation of the spacers and tighten the bolts.
Torque:
1st: 49 N´m (500 kgf´cm, 36 ft´lbf)
2nd: Turn extra 90°
3. MEASURE TORQUE CONVERTER CLUTCH SLEEVE
RUNOUT
(a) Temporarily mount the torque converter clutch to the drive
plate.
Set up a dial indicator and measure the torque converter
clutch sleeve runout.
Maximum runout: 0.30 mm (0.0118 in.)
If runout is not within the specification, correct it by reorienting
the installation of the torque converter clutch.
If excessive runout cannot be corrected, replace the torque
converter clutch.
(b) Remove the torque converter clutch.

AT111-02
D13663
AT0103
D12703
D12704
Bolt
- AUTOMATIC TRANSMISSIONVALVE BODY ASSEMBLY
AT-8
1862 Author
: Date
:
VALVE BODY ASSEMBLY
ON-VEHICLE REPAIR
1. REMOVE ENGINE NO.2 UNDER COVER
2. DRAIN ATF
3. REMOVE OIL PAN
NOTICE:
Some fluid will remain in the oil pan.
(a) Remove the 20 bolts.
(b) Remove the oil pan gasket.
4. EXAMINE PARTICLES IN PAN
Remove the magnets and use them to collect steel particles.
Carefully look at the foreign matter and particles in the pan and
on the magnets to anticipate the type of wear you will find in the
transmission.
Steel (magnetic)...bearing, gear and clutch plate wear
Brass (non-magnetic)...bushing wear
5. REMOVE OIL STRAINER
Remove the 4 bolts, the oil strainer and the O-ring.
NOTICE:
Be careful as some fluid will come out with the oil strainer.
6. DISCONNECT TEMPERATURE SENSOR
(a) Disconnect the 7 solenoid connectors.
(b) Remove 2 bolts and the 2 temperature sensors clamp
from the valve body.
(c) Disconnect the 2 temperature sensor from the valve body.
7. DISCONNECT 7 CONNECTORS FROM SHIFT SOLE-
NOID VALVES

DI-424
- DIAGNOSTICSAUTOMATIC TRANSMISSION
617 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0724 Brake Switch ºBº Circuit High
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock-up condition, when
brakes are suddenly applied.
When the brake pedal is operated, this switch sends a signal to ECM. Then the ECM cancels operation of
the lock-up clutch while braking is in progress.
DTC No.DTC Detection ConditionTrouble Area
P0724Stop light switch always turn on even vehicle is driver Go and
Stop 10 times. (2-trip detection logic)
Short in stop light switch signal circuit

Stop light switch

ECM
MONITOR DESCRIPTION
When the stop light switch remains ON during ºstop and goº driving, the ECM interprets this as a fault in the
stop light switch and the MIL comes on and the ECM stores the DTC. The vehicle must stop and go (3 km/h
(2 mph) to 30 km/h (19 mph)) ten times for two driving cycles in order to detect malfunction.
MONITOR STRATEGY
Related DTCsP0724Stop light switch/Range check/Rationality
Rid /C tMainStop light switchRequired sensors/ComponentsSubVehicle speed sensor
Frequency of operationContinuous
DurationGO and STOP 10 times
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
The stop light switch remains on during GO and STOP 10 times.
GO and STOP are defined as follows;
GO: Vehicle speed30 km/h (19 mph) or more-
STOP: Vehicle speed-Less than 3 km/h (2 mph)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Brake switch statusON stuck
WIRING DIAGRAM
See page DI-278.
DIB37-02

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-433
626 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0751 Shift Solenoid ºAº Performance
(Shift Solenoid Valve S1)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed sensor to detect the actual
gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule
in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic
transmission (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0751The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)
Shift solenoid valve S1 is stuck open or closed

Valve body is blocked up or stuck

Automatic transmission (clutch, brake or gear etc.)
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th
gear position. When the gear position commanded by the ECM and the actual gear position are not same,
the ECM illuminates the MIL.
MONITOR STRATEGY
RltdDTCP0751Shift solenoid valve S1/OFF malfunctionRelated DTCsP0751Shift solenoid valve S1/ON malfunction
MainShift solenoid valve S1
Required sensors/ComponentsSubVehicle speed sensor, Throttle position sensor, Speed sensor (NT), Speed
sensor (NO)
Frequency of operationContinuous
OFF malfunction (A) and (B)0.4 sec.
OFF malfunction (C)Immediate
DurationON malfunction (A), (B) and
(C)0.4 sec.
ON malfunction (D)3 sec.
ON malfunction (E)0.5 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The following conditions are common to all conditions below:
Off malfunction (A), (B), (C) and ON malfunction (A), (B), (C), (D), (E)
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
DIC31-01

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-437
630 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0756 Shift Solenoid ºBº Performance
(Shift Solenoid Valve S2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed sensor to detect the actual
gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule
in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic
transmission (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0756The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)
Shift solenoid valve S2 is stuck open or closed

Valve body is blocked up or stuck

Automatic transmission (clutch, brake or gear etc.)
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th
gear position). When the gear position commanded by the ECM and the actual gear position are not same,
the ECM illuminates the MIL.
MONITOR STRATEGY
RltdDTCP0756Shift solenoid valve S2/OFF malfunctionRelated DTCsP0756Shift solenoid valve S2/ON malfunction
MainShift solenoid valve S2
Required sensors/ComponentsSubVehicle speed sensor, Throttle position sensor, Speed sensor (NT), Speed
sensor (NO)
Frequency of operationContinuous
OFF malfunction (A), (B), (C)0.4 sec.
OFF malfunction (D)Immediate
DurationON malfunction (A) and (B)0.4 sec.Duration
ON malfunction (C)3 sec.
ON malfunction (D)0.5 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The following conditions are common to all conditions below:
OFF malfunction (A), (B), (C), (D) and ON malfunction (A), (B), (C), (D)
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
DIC32-01

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-441
634 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0771 Shift Solenoid ºEº Performance
(Shift Solenoid Valve SR)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed sensor to detect the actual
gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule
in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic
transmission (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0771The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)

Shift solenoid valve SR is stuck open or closed

Shift solenoid valve SL1 is stuck open or closed

Valve body is blocked up or stuck

Automatic transmission (clutch, brake or gear etc.)
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th
gear position). When the gear position commanded by the ECM and the actual gear position are not same,
the ECM illuminates the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCsP0771Shift solenoid valve SR/Rationality check
Rid /C tMainShift solenoid valve SRRequired sensors/ComponentsSubSpeed sensor (NT), Speed sensor (NO), Crankshaft position sensor (NE)
Frequency of operationContinuous
OFF malfunction (A)0.4 sec.
DurationOFF malfunction (B) and (C)ImmediateDuration
ON malfunction0.15 sec.
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The following items are common to all condition below: OFF malfunction (A), (B), (C) and ON malfunction
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
DIB3A-02

- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-445
638 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC P0776 Pressure Control Solenoid ºBº Performance
(Shift Solenoid Valve SL2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and direct clutch speed sensor to detect the actual
gear position (1st, 2nd, 3rd, 4th or 5th gear). Then the ECM compares the actual gear with the shift schedule
in the ECM memory to detect mechanical problems of the shift solenoid valves, valve body or automatic
transmission (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0776The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)Shift solenoid valve SL2 is stuck open or closed
Valve body is blocked up or stuck
Automatic transmission (clutch, brake or gear etc.)
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ºON/OFFº. According to the input shaft
revolution and output shaft revolution, the ECM detects the actual gear position (1st, 2nd, 3rd, 4th or 5th
gear position). When the gear position commanded by the ECM and the actual gear position are not same,
the ECM illuminates the MIL and stores the DTC.
MONITOR STRATEGY
Related DTCsP0776Shift solenoid valve SL2/ON malfunction
Rid /C tMainShift solenoid valve SL2Required sensors/ComponentsSubSpeed sensor (NT), Speed sensor (NO), Crankshaft position sensor (NE)
Frequency of operationContinuous
ON malfunction (A), (B) and
(C)0.4 sec.
DurationON malfunction (D)3 sec.
ON malfunction (E)0.5 sec.
MIL operation2 driving cycles
Sequence of operationNone
DIB3B-02