automatic transmission TOYOTA LAND CRUISER 1998 Factory Manual PDF
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 1998, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1998Pages: 3115, PDF Size: 54.88 MB
Page 950 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-429
622 Author: Date:
2004 LAND CRUISER (RM1071U)DTC No.
DTC Detection ConditionTrouble Area
P0748
ECM checks for an open or short circuit in shift solenoid valves
SL1 (1-trip detection logic)
(a) When solenoid, duty ratio equal to 100%
(b) When solenoid is not energized, duty ratio is less than 3%Open or short in shift solenoid valve SL1 circuit
Shift solenoid valve SL1
ECM
MONITOR DESCRIPTION
The ECM commands gearshift by turning the shift solenoid valves ºON/OFFº. When there is an open or short
circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and stores
the DTC. And the ECM performs the fail-safe function and turns the other shift solenoid valves in good condi-
tion ºON/OFFº (In case of an open or short circuit, the ECM stops sending current to the circuit.).
MONITOR STRATEGY
Related DTCsP0748Shift solenoid valve SL1/Range check
Required sensors/ComponentsShift solenoid valve SL1
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Battery voltage10 V or more-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
Output signal duty100%
COMPONENT OPERATING RANGE
ParameterStandard value
Output signal dutyLess than 100%
Page 951 of 3115
D12762
SL1+
SL1- R-L
R-WE6
18
412ECM E1
Electronically Controlled
Transmission Solenoid
19
E6
EB3EB36
10 R-L
R-W
L R
SL1+
SL1- DI-430
- DIAGNOSTICSAUTOMATIC TRANSMISSION
623 Author: Date:
2004 LAND CRUISER (RM1071U)
WIRING DIAGRAM
Page 952 of 3115
1
152 3 4 5 6 7 8
9 10 11 12
13 14
D11994
SL1-
SL1+
D11583SL1+SL1-
E5E6E7E8E9
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-431
624 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check transmission wire.
PREPARATION:
Disconnect the trasmission wire connector.
CHECK:
Measure resistance between SL1+ and SL1- of transmission
wire.
OK:
Resistance: 5.0 to 5.6 W at 20°C (68°F)
CHECK:
Measure resistance between terminals SL1+ and SL1- of the
transmission wire connector and body ground.
OK:
Resistance: 1 MW or higher
NG Go to step 3.
OK
2 Measure resistance between terminal SL1+ and SL1- of ECM connector.
PREPARATION:
(a) Connect the transmission wire connector.
(b) Disconnect the connector of the ECM.
CHECK:
Measure resistance between terminals SL1+ and SL1- of ECM
connector.
OK:
Resistance: 5.0 to 5.6 W at 20°C (68°F)
CHECK:
Measure resistance between terminals SL1+ and SL1- 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 953 of 3115
D12795
12
(-)(+)
12
DI-432
- DIAGNOSTICSAUTOMATIC TRANSMISSION
625 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve SL1.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SL1.
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 SL1
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 954 of 3115
- 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
Page 955 of 3115
DI-434
- DIAGNOSTICSAUTOMATIC TRANSMISSION
627 Author: Date:
2004 LAND CRUISER (RM1071U) 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
OFF malfunction (A)
ECM selected gear1st
Vehicle speed2 km/h (1 mph) or moreLess than 40 km/h (25 mph)
Throttle valve opening angle
8% or more and
6.5% or more at 2,000 rpm
(conditions vary with engine speed)
-
OFF malfunction (B)
Current ECM selected gear5th
Last ECM selected gear4th
Continuous time for ECM selecting 4th
gear2 sec. or more-
Actual gear when ECM selected 4th gear4th
OFF malfunction (C)
Current ECM selected gear5th
Last ECM selected gear4th
ON malfunction (A)
ECM selected gear1st
Vehicle speed2 km/h (1 mph) or moreLess than 40 km/h (25 mph)
Throttle valve opening angle6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
ON malfunction (B)
ECM selected gear4th
Vehicle speed2 km/h (1 mph) or more-
Page 956 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-435
628 Author: Date:
2004 LAND CRUISER (RM1071U) Throttle valve opening angle
6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
ON malfunction (C)
ECM selected gear3rd
Vehicle speed2 km/h (1 mph) or more-
Throttle valve opening angle6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
ON malfunction (D)
Current ECM selected gear5th
Last ECM selected gear4th
Vehicle speed
(During transition from 4th to 5th gear)-Less than 100 km/h (62 mph)
ON malfunction (E)
ECM selected gear5th
Engine speed - Turbine speed (NE - NT)
(After transition from 4th to 5th gear)-150 rpm
Vehicle speed
(After transition from 4th to 5th gear)-Less than 100 km/h (62 mph)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
[OFF malfunction]
All of the following conditions are met: Condition (A), (B) and (C)
It is necessary 2 detections/one drive cycle
1st detection; temporary flag ON
2nd detection; pending fault code ON
OFF malfunction (A)
Turbine speed/Output speed (NT/NO)
0.93 or more
and
1.07 or less
OFF malfunction (B)
Turbine speed/Output speed (NT/NO)
0.65 or more
and
0.79 or less
OFF malfunction (C)
Output record from ECM for 4th " 5th upshiftingRecorded
[ON malfunction]
Either of the following conditions is met:
ON malfunction (A) and (B)
ON malfunction (B) or (C), and ON malfunction (D) or (E)
ON malfunction (A) and (B)
Turbine speed/Output speed (NT/NO)
3.30 or more
and
7.50 or less
ON malfunction (C)
Turbine speed/Output speed (NT/NO)
1.91 or more
and
2.35 or less
ON malfunction (D)
Page 957 of 3115
D11991
Shift solenoid S1:
(+) (-)
DI-436
- DIAGNOSTICSAUTOMATIC TRANSMISSION
629 Author: Date:
2004 LAND CRUISER (RM1071U) Turbine speed - Output speed x 4th gear ratio
(NT - NO x 4th gear ratio)
1,000 rpm or more
ON malfunction (E)
Turbine speed - Output speed x 5th gear ratio
(NT - NO x 5th gear ratio)1,000 rpm or more
INSPECTION PROCEDURE
1 Check shift solenoid valve S1 operation.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve S1.
CHECK:
Measure the resistance between the solenoid connector termi-
nal and the body ground.
OK:
Resistance: 11 to 15 W at 20°C (68°F)
CHECK:
Connect the battery positive lead to the solenoid connector ter-
minal and the battery negative lead to the solenoid body
ground.
OK:
Solenoid sounds operation noise.
NG Replace shift solenoid valve S1 (See page
AT-8).
OK
2 Check valve body (See page DI-396).
NG Repair or replace valve body.
OK
Repair or replace transmission (See page
AT-30).
Page 958 of 3115
- 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
Page 959 of 3115
DI-438
- DIAGNOSTICSAUTOMATIC TRANSMISSION
631 Author: Date:
2004 LAND CRUISER (RM1071U) 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
OFF malfunction (A)
ECM selected gear1st
Vehicle speed2 km/h (1 mph) or moreLess than 40 km/h (25 mph)
Throttle valve opening angle6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
OFF malfunction (B)
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)-
OFF malfunction (C)
Current ECM selected gear5th
Last ECM selected gear4th
Continuous time for ECM selecting 4th
gear2 sec. or more-
Actual gear when ECM selected 4th gear4th
OFF malfunction (D)
Current ECM selected gear5th
Last ECM selected gear4th
ON malfunction (A)
ECM selected gear1st
Vehicle speed2 km/h (1 mph) or moreLess than 40 km/h (25 mph)