transmission oil TOYOTA LAND CRUISER 1986 Factory Owner's Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 1986, Model line: LAND CRUISER, Model: TOYOTA LAND CRUISER 1986Pages: 3115, PDF Size: 54.88 MB
Page 992 of 3115
D11993
(+)
(-)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-471
664 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve SR.
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 the shift solenoid valve SR
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 997 of 3115
D01769
DI-476
- DIAGNOSTICSAUTOMATIC TRANSMISSION
669 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2714 Pressure Control Solenoid ºDº Performance
(Shift Solenoid Valve SLT)
SYSTEM DESCRIPTION
The ECM calculates the shifting condition by using the signals
from the vehicle speed sensor, throttle position sensor, etc..
And compares this result with the signal that ECM sends to SLT
to detect mechanical trouble of the shift solenoid valve SLT,
valve body, torque converter clutch and automatic transmission
assembly (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P2714
ECM detects a malfunction on SLT (ON side) according to the
revolution difference of the turbine and the output shaft, and
also by the oil pressure.Shift solenoid valve SLT is stuck open or closed
Valve body blocked up or stuck
Automatic transmission assembly
MONITOR DESCRIPTION
The ECM sends (ED: delete ºtheº) signals (Duty Ratio) to the shift solenoid valve SLT based on the informa-
tion such as the signal from throttle position sensor and the vehicle speed sensor.
Based on the signal's duty-ratio, the shift solenoid valve SLT adjusts the hydraulic pressure to the primary
regulator valve to an appropriate level. This function enables a smooth vehicle operation by adjusting the
line hydraulic pressure to match the engine output and running condition.
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 DTCsP2714Shift solenoid valve SLT/ON malfunction
MainShift solenoid valve SLT
Required sensors/ComponentsSubValve body, ATF temperature sensor, Speed sensor (NT), Speed sensor
(NO)
Frequency of operationContinuous
DurationImmediate
MIL operation2 driving cycles
Sequence of operationNone
DIB3J-02
Page 999 of 3115
D11987
2
1
DI-478
- DIAGNOSTICSAUTOMATIC TRANSMISSION
671 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Check shift solenoid valve SLT operation.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SLT.
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 SLT
(See page AT-8).
OK
2 Check valve body (See page DI-396).
NG Replace the valve body (See page AT-8).
OK
Repair or replace transmission (See page
AT-30).
Page 1003 of 3115
D11987
2 1
DI-482
- DIAGNOSTICSAUTOMATIC TRANSMISSION
675 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve SLT.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SLT.
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 SLT
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 1004 of 3115
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-483
676 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2740 Transmission Fluid Temperature Sensor ºBº
Circuit
DTC P2742 Transmission Fluid Temperature Sensor ºBº
Circuit Low Input
DTC P2743 Transmission Fluid Temperature Sensor ºBº
Circuit High Input
CIRCUIT DESCRIPTION
The ATF temperature sensor converts fluid temperature into a resistance value which is input in to the ECM.
ATF temperature sensor No.2 is on the transmission and just before the oil cooler inlet pipeline.
If ECM detects the abnormally high temperature of ATF by this sensor, it draws driver's attention by illuminat-
ing the warning lamp.
HINT:
The temperature of ATF easily raises when towing, climbing hills and in traffic, etc.
If the ATF temperature sensor No.2 shorts, the signal that indicates the ATF temperature is 150C
(302F) or higher is input in ECM.
Vehicle conditions when sensor is in normal and when the vehicle is in short are indicated in the table
below.
ATF temperature No.2 Sensor
StateDetection ConditionSymptomRecovery Condition
Sensor is normal
AT fluid temp. more than 150C
(302F).AT Oil Temp. warning light re-
mains onAT fluid temp. less than 135C
(275F). *1
Sensor is normalAT fluid temp. more than 130C
(266F).Shift point too high.AT fluid temp. less than 110C
(230F).
Sensor is in shortAny conditions.
AT Oil Temp. warning light re-
mains on
Shift point too high.
Symptoms still occur
HINT:
*1: When AT fluid temperature is in normal range, it decreases to less than 135C within 5 minutes with the
shift lever in P or N position in a idling state.
DTC No.DTC Detecting ConditionTrouble Area
P2740
(a) and (b) is detected momentary within 0.5 sec. when neither
P2742 or P2743 is not detected (1-trip detection logic)
(a) ATF temperature sensor resistance is less than 79 W.
(b) ATF temperature sensor resistance is more than 156 kW.
HINT:
Wthin 0.5 sec. the malfunction switches from (a) to (b) or from
(b) to (a)
Open or short in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
P2742ATF temperature sensor resistance is less than 79 W. for 0.5
sec. or more (1-trip detection logic)ECM
P2743
DTC is detected for 0.5 sec. or more (1-trip detection logic)
ATF temperature sensor resistance is more than 156 kW. after
started engine for 15 minutes or more
DIC33-01
Page 1008 of 3115
D01769
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-487
680 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2757Torque Converter Clutch Pressure Control Solenoid
Performance(Shift Solenoid Valve SLU)
SYSTEM DESCRIPTION
The ECM uses the signals from the Throttle Position Sensor
and Air-flow Meter to monitor the engagement 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 SLU,
valve body, torque converter clutch and automatic transmission
assembly (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P2757
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 SLU is stuck open or closed
Valve body blocked up or stuck
Lock-up clutch
Automatic transmission assembly
MONITOR DESCRIPTION
The ECM controls the oil pressure to the lock-up clutch based on engine-load information from the throttle
position sensor, crankshaft position sensor, input speed sensor, and the oil pressure sensor for shift-sole-
noid SLU. The ECM commands the shift-solenoid SLU using a duty-cycle control signal. In turn, the shift
solenoid operates the lock-up control valve and causes lock-up or flexible lock-up of the torque converter
clutch.
To monitor the condition of the lock up clutch, the ECM monitors the signals from the input speed sensor,
crank position sensor, the throttle position sensor, and air flow meter. The ECM uses this information to deter-
mine when the vehicle's torque converter clutch should be locked-up. The ECM can detect many mechani-
cal problems in the shift solenoids, valve body, and the transmission clutches, brakes, and gears. If the ECM
detects that the torque converter clutch locked below the minimum lock-up speed, it will illuminate the MIL
and store the DTC.
MONITOR STRATEGY
RltdDTCP2757Shift solenoid valve SLU/OFF malfunctionRelated DTCsP2757Shift solenoid valve SLU/ON malfunction
MainShift solenoid valve SLU
Required sensors/ComponentsSubValve body, Vehicle speed sensor, Throttle position sensor, Speed sensor
(NT), Speed sensor (NO)
Frequency of operationContinuous
DtiOFF malfunction2 sec.DurationON malfunction1.8 sec.
MIL operation2 driving cycles
Sequence of operationNone
DIB3L-02
Page 1010 of 3115
D12795
12
(-)(+)
12
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-489
682 Author: Date:
2004 LAND CRUISER (RM1071U)
TYPICAL MALFUNCTION THRESHOLDS
Detection criteriaThreshold
OFF malfunction
Engine speed - Turbine speed70 rpm or more
ON malfunction
It is necessary 2 detections/one driving cycle
1st detection; temporary flag ON
2nd detection; pending fault code ON
Vehicle speed must be under 10 km/h (6 mph) once before 2nd detection
|Engine speed - Turbine speed|Less then 35 rpm
COMPONENT OPERATING RANGE
ParameterStandard value
Speed sensor (NT)Input speed is equal to engine speed when lock-up ON.
INSPECTION PROCEDURE
1 Check shift solenoid valve SLU operation.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SLU.
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 SLU
(See page AT-8).
OK
Page 1012 of 3115
Current flow to solenoid
Lock-up
Operation
Pressure
BE4056D00160
1 cycle ON
OFFDuty Ratio
=
A + B
A
y 100 (%) (*)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-491
684 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC P2759Torque Converter Clutch Pressure Control Solenoid
Control Circuit Electrical(Shift Solenoid Valve SLU)
CIRCUIT DESCRIPTION
The amount of current flow to the solenoid is controlled by the
(*) duty ratio of the ECM output signal. The higher the duty ratio
becomes, the higher the lock-up hydraulic pressure becomes
during the lock-up operation.
(*) Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle.
For example, if A is the period of continuity in one cycle, and B
is the period of non-continuity, then
DTC No.DTC detection conditionTrouble Area
P2759
The following condition is detected. (1-trip detection logic)
SLU output signal's duty ON of 3.3 msec. or more with duty
ratio of least 95% lasts for 1 second.Open or short in shift solenoid valve SLU circuit
Shift solenoid valve SLU
ECM
MONITOR DESCRIPTION
The ECM controls the oil pressure to the lock-up clutch based on engine-load information from the throttle
position sensor, crankshaft position sensor, input speed sensor, and the oil pressure sensor for shift-sole-
noid SLU. The ECM commands the shift-solenoid SLU using a duty-cycle control signal. In turn, the shift
solenoid operates the lock-up control valve and cause lock-up or flexible lock-up of the torque converter
clutch. The ECM illuminates the MIL and store the DTC when ECM detects an open or a short circuit malfunc-
tion in the shift solenoid valve SLU.
MONITOR STRATEGY
Related DTCsP2759Shift solenoid valve SLU/Range check
Required sensors/ComponentsShift solenoid valve SLU
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
DIB3M-02
Page 1015 of 3115
D12795
12
(-)(+)
12
DI-494
- DIAGNOSTICSAUTOMATIC TRANSMISSION
687 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check shift solenoid valve SLU.
PREPARATION:
(a) Jack up the vehicle.
(b) Remove the oil pan.
(c) Remove the shift solenoid valve SLU.
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 SLU
(See page AT-8).
OK
Repair or replace the transmission wire
(See page AT-6).
Page 1023 of 3115
DI3BR-05
D13102
Combination Meter
DLC3 Stop Light SwitchECM
Transmission Control
Switch
(2 e L Position)
Pattern Select Switch
Park/Neutral Position Switch
Speed Sensor SP2
Shift Solenoid Valve S1
Shift Solenoid Valve SR
Shift Solenoid Valve SLU
Shift Solenoid Valve SL2 ATF Temperature
Sensor No. 2Speed Sensor NT
Indicator Switch
(Transfer Neutral Position Switch)
Indicator Switch
(Transfer L4 Position Switch)
Transmission Control
Switch
(D e 4 Position) MIL
ECT PWR Indicator Light
2nd STRT Indicator Light
A/T. P. Indicator Light
Shift Solenoid
Valve SL1
Shift Solenoid
Valve SLT
ATF Temperature
Sensor No. 1
Shift Solenoid Valve S2
AT Oil Temp warning Light DI-392
- DIAGNOSTICSAUTOMATIC TRANSMISSION
585 Author: Date:
2004 LAND CRUISER (RM1071U)
PARTS LOCATION