TOYOTA LAND CRUISER 1998 Factory Repair Manual
Manufacturer: TOYOTA, Model Year: 1998, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1998Pages: 3115, PDF Size: 54.88 MB
Page 971 of 3115
D12762
SL2+
SL2- P-B
P-L
E6 E6 Y
V16 11
3ECM E1
Electronically Controlled
Transmission Solenoid
17
P-B
P-L SL2+
SL2-4
EB3
7
EB3
1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994SL2+
SL2-
DI-450
- DIAGNOSTICSAUTOMATIC TRANSMISSION
643 Author: Date:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 Check transmission wire.
PREPARATION:
Disconnect the transmission wire connector.
CHECK:
Measure resistance between SL2+ and SL2- of transmission
wire.
OK:
Resistance: 5.0 to 5.6 W at 20°C (68°F)
CHECK:
Measure resistance between terminals SL2+ and SL2- of the
transmission wire connector and body ground.
OK:
Resistance: 1 MW or higher
NG Go to step 3.
OK
Page 972 of 3115
D11583SL2+SL2-
E5E6E7E8E9
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-451
644 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Measure resistance between terminal SL2+ and SL2- of ECM connector.
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the connector of the ECM.
CHECK:
Measure resistance between terminals SL2+ and SL2- of ECM
connector.
OK:
Resistance: 5.0 to 5.6 W at 20°C (68°F)
CHECK:
Measure resistance between terminals SL2+ and SL2- of the
ECM connector and body ground.
OK:
Resistance: 1 MW or higher
NG Repair or replace the harness or connector
(See page IN-36).
OK
Check and replace the ECM (See page
IN-36).
Page 973 of 3115
D12795
12
(-)(+)
12
DI-452
- DIAGNOSTICSAUTOMATIC TRANSMISSION
645 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve SL2.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SL2.
CHECK:
(a) Measure the resistance between terminals 1 and 2 of so-
lenoid connector.
Standard: 5.0 to 5.6 W at 20°C (68°F)
(b) Connect the positive (+) lead with an 21 W bulb to terminal
2 of solenoid connector and negative (-) lead to terminal
1 of the solenoid valve connector, then check the move-
ment of the valve.
Standard: Solenoid sounds operation noise.
OK:
Standard
NG Replace the shift solenoid valve SL2
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 974 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-453
646 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0781 1-2 Shift
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
P0781The gear required by the ECM does not match the actual gear
when driving (2-trip detection logic)Valve body is blocked up or stuck (1-2 shift)
Automatic transmission assembly
ECM
MONITOR DESCRIPTION
The ECM calculates the ºactualº transmission gear by comparing the signals from the input speed sensor
and the output speed sensor. The ECM can detect many mechanical problems in the shift solenoids, valve
body, and the transmission clutches, brakes, and gears. If the ECM detects that the actual gear position and
the commanded gear position are different, it will illuminate the MIL and store the DTC.
MONITOR STRATEGY
Related DTCsP0781Valve body/Rationality check
MainValve body
Required sensors/ComponentsSubAutomatic transmission assembly, Speed sensor (NT), Speed sensor
(NO), Vehicle speed sensor, Throttle speed sensor
Frequency of operationContinuous
Condition (A) and (B)0.4 sec.
DurationCondition (C)3 sec.Duration
Condition (D)0.5 sec.
MIL operation2 driving cycles
Sequence of operationNone
DIB3D-02
Page 975 of 3115
DI-454
- DIAGNOSTICSAUTOMATIC TRANSMISSION
647 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The Following items are common to all conditions below: Condition (A), (B), (C) and (D)
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Turbine speed sensor (NT) circuit
Output speed sensor (NO) circuit
Shift solenoid ºAº (S1) circuit
Shift solenoid ºBº (S2) circuit
Shift solenoid ºEº (SR) circuitThere is no malfunction in the circuits shown on the leftPressure control solenoid ºAº (SL1) circuitThere is no malfunction in the circuits shown on the left.
Pressure control solenoid ºBº (SL2) circuit
ECT (Engine coolant temperature) sensor
circuit
KCS sensor circuit
ETCS (Electric throttle control system)Not system down
Transmission shift positionºDº
ECT40°C (104°F) or more-
Spark advance from Max. retard timing by
KCS control0° CA or more-
EngineRunning
Transfer rangeºHIGHº*1
Transfer range ºHIGHº *1 (This condition is applied only 4WD)
*1 Following conditions met
Vehicle speed sensor ºAº circuitTh i lf ti i th i it h th l ft Output shaft speed sensor circuitThere is no malfunction in the circuits shown on the left.
Transfer output speed143 rpm or more-
NO/NOtf (Transfer input speed/Transfer
output speed)0.9 or moreLess than 1.1
Condition (A)
ECM selected gear2nd
Vehicle speed2 km/h (1 mph) or more-
Output speed2nd " 1st down shift point or more-
Throttle valve opening angle6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
Condition (B)
ECM selected gear4th
Vehicle speed2 km/h (1 mph) or more-
Throttle valve opening angle6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
Condition (C)
Current ECM selected gear5th
Last ECM selected gear4th
Vehicle speed
(During transition from 4th to 5th gear)-Less than 100 km/h (62 mph)
Condition (D)
Page 976 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-455
648 Author: Date:
2004 LAND CRUISER (RM1071U) ECM selected gear
5th
Engine speed - Turbine speed (NE - NT)
(After transition from 4th to 5th gear)-Less than 150 rpm
Vehicle speed
(After transition from 4th to 5th gear)-Less than 100 km/h (62 mph)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Both of the following conditions are met: Condition (A), and Condition (B), (C) or (D)
Condition (A)
Turbine speed/Output speed (NT/NO)
3.30 or more
and
7.50 or less
Condition (B)
Turbine speed/Output speed (NT/NO)
1.28 or more
and
1.53 or less
Condition (C)
Turbine speed - Output speed x 4th gear ratio
(NT - NO x 4th gear ratio)1,000 rpm or more
Condition (D)
Turbine speed - Output speed x 5th gear ratio
(NT - NO x 5th gear ratio)1,000 rpm or more
INSPECTION PROCEDURE
1 Check other DTCs output (in addition to DTC P0781).
PREPARATION:
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the OBD ll scan tool or hand-held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ºONº button of the OBD ll scan tool or the hand-held tester.
(f) Select the item ºDIAGNOSIS/ENHANCED OBD ll/DTC INFO/CURRENT CODESº.
CHECK:
Read the DTCs using the OBD ll scan tool or the hand-held tester.
RESULT:
Display (DTC output)Proceed to
Only ºP0781º is outputA
ºP0781º and other DTCsB
HINT:
If any other codes besides ºP0781º is output, perform the troubleshooting for those DTCs first.
B Go to relevant DTC chart (See page DI-389)
A
Page 977 of 3115
DI-456
- DIAGNOSTICSAUTOMATIC TRANSMISSION
649 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Clear the DTC and running test (See page DI-361).
CHECK:
Clear the DTC again, and check DTC again after conducting the
running test.
OK:
Normal code
OK END
NG
Repair or replace valve body (See page
AT-8).
Page 978 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-457
650 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P0818 Driveline Disconnect Switch Input Circuit
CIRCUIT DESCRIPTION
The ECM detects the signal from the transfer neutral position switch.
This DTC indicates that the transfer neutral position switch remains ON.
DTC No.DTC Detecting ConditionTrouble Area
P0818
Transfer neutral position switch remains ON while vehicle run-
ning under conditions for 30 sec. (2-trip detection logic)
Vehicle speed is 25 km/h or more
Transfer shift position is HShort in transfer neutral position switch circuit
Transfer neutral position switch
ECM
MONITOR DESCRIPTION
The ECM detects whether or not the transfer gear is in the neutral position by monitoring the signal from the
transfer neutral position switch.
If the ECM detects that the transfer-case is in neutral under the following conditions, the ECM will conclude
that there is a malfunction of the transfer-case neutral position switch:
Transfer-case neutral position switch indicates that the transfer-case is in neutral.
Transfer-case shifter is in the ºHº position.
The vehicle is traveling at 25 km/h (16 mph) or more.
The neutral switch has been ON for more than thirty seconds.
If all of the above conditions are detected, the ECM will conclude that there is a malfunction of the transfer-
case neutral position switch, illuminate the MIL and store the DTC.
MONITOR STRATEGY
Related DTCsP0818Transfer neutral position switch/Verify switch cycling
Rid /C tMainTransfer neutral position switchRequired sensors/ComponentsSubVehicle speed sensor
Frequency of operationContinuous
Duration30 sec.
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
Vehicle speed25 km/h (16 mph) or more-
Transfer positionHigh
Ignition switch ON and time after OFF to
ON0.5 sec. or more-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Transfer neutral switch signalON
DIB3E-02
Page 979 of 3115
D12764D13183
EC 2 1Y-G
EB1 D6
Detection SW
(Transfer Neutral Position)J/B No. 6
11
E7TFN 38
539
Y-GY-GECM
W-B
W-B
EB18
6D
6D10
If1Y-G DI-458
- DIAGNOSTICSAUTOMATIC TRANSMISSION
651 Author: Date:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM
Page 980 of 3115
D02665
OFF-ON27±0.82mm Ball
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-459
652 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check transfer neutral position switch.
PREPARATION:
Remove the transfer neutral position switch.
CHECK:
Check the continuity between the switch terminals when push-
ing the ball at the tip of the switch.
OK:
SwitchSpecified condition
PushContinuity
FreeNo continuity
NG Replace transfer neutral position switch.
OK
2 Check harness and connector between ECM and transfer neutral position
switch, transfer neutral position switch and body ground (See page IN-36).
NG Repair or replace the harness or connector.
OK
Check and replace the ECM (See page
IN-36
).