1986 TOYOTA LAND CRUISER automatic transmission
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- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-439
632 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 (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)-
ON malfunction (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)
ON malfunction (D)
ECM selected gear5th
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
[OFF malfunction]
All of the following conditions are met: Condition (A), (B), (C) and (D)
It is necessary 2 detections/one drive cycle
1st detection; temporary flag ON
2nd detection; pending fault code ON
OFF malfunction (A) and (B)
Turbine speed/Output speed (NT/NO)
3.30 or more
and
7.50 or less
OFF malfunction (C)
Turbine speed/Output speed (NT/NO)
0.65 or more
and
0.79 or less
OFF malfunction (D)
Output record from ECM for 4th " 5th upshiftingRecorded
[ON malfunction]
Both of the following conditions are met: ON malfunction (A) or (B), and ON malfunction (C) or (D)
ON malfunction (A)
Turbine speed/Output speed (NT/NO)
1.91 or more
and
2.35 or less
ON malfunction (B)
Turbine speed/Output speed (NT/NO)
1.28 or more
and
1.53 or less
ON malfunction (C)
Turbine speed - Output speed x 4th gear ratio
(NT - NO x 4th gear ratio)1,000 rpm or more
Page 961 of 3115
D11992
Shift solenoid S2:
(+) (-)
DI-440
- DIAGNOSTICSAUTOMATIC TRANSMISSION
633 Author: Date:
2004 LAND CRUISER (RM1071U) 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 S2 operation.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve S2.
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 S2 (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 962 of 3115
- 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
Page 963 of 3115
DI-442
- DIAGNOSTICSAUTOMATIC TRANSMISSION
635 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 gear5th
Vehicle speed2 km/h (1 mph)-
Throttle valve opening angle6.5% 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-
OFF malfunction (C)
Current ECM selected gear5th
Last ECM selected gear4th
ON malfunction
Current ECM selected gear2th
Last ECM selected gear1st
Throttle valve opening angle
(During transition from 1st to 2nd gear)4.5% or more at 2,000 rpm
(conditions vary with turbine speed)-
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
[OFF malfunction]
All of the following conditions are met: OFF malfunction (A), (B) and (C)
Page 964 of 3115
D11993
(+) (-)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-443
636 Author: Date:
2004 LAND CRUISER (RM1071U) It is necessary 2 detections/one drive cycle
1st detection; temporary flag ON
2nd detection; temporary 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)
Not change as follow
0.93 or more and 1.07 or less
O
0.65 or more and 0.79 or less
OFF malfunction (C)
Output record from ECM for 4th " 5th upshiftingRecorded
[ON malfunction]
It is necessary 2 detections/one drive cycle
1st detection; temporary flag ON
2nd detection; temporary pending fault code ON
Turbine speed - Output speed x 1st gear ratio
(NT - NO x 1st gear ratio)150 rpm or more
INSPECTION PROCEDURE
1 Check shift solenoid valve SR operation.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SR.
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 SR (See page
AT-8).
OK
Page 965 of 3115
D12795
12
(-)(+)
12
DI-444
- DIAGNOSTICSAUTOMATIC TRANSMISSION
637 Author: Date:
2004 LAND CRUISER (RM1071U)
2 Check shift solenoid valve SL1 operation.
PREPARATION:
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 shift solenoid valve SL1 (See page
AT-8).
OK
3 Check valve body (See page DI-396).
NG Repair or replace valve body (See page
AT-8).
OK
Repair or replace transmission (See page
AT-30).
Page 966 of 3115
- 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
Page 967 of 3115
DI-446
- DIAGNOSTICSAUTOMATIC TRANSMISSION
639 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL ENABLING CONDITIONS
ItSpecificationItemMinimumMaximum
The following items are common to all condition below: ON malfunction (A), (B), (C), (D) and (E)
The monitor will run whenever the follow-
ing DTCs are not present.See page DI-361
Turbine speed sensor (NT) circuit
Output speed sensor (N) 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
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 gear3rd
Vehicle speed2 km/h (1 mph)-
Throttle valve opening angle6.5% or more at 2,000 rpm
(conditions vary with engine speed)-
ON malfunction (C)
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)-
ON malfunction (D)
Current ECM selected gear5th