Current flow to solenoid
Lock-up
Operation
Pressure
BE4056D00160
1 cycle ON
OFFDuty Ratio
=
A + B
A
y 100 (%) (*)
- DIAGNOSTICSAUTOMATIC TRANSMISSION
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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
D12771
ECM
PWR E829 J/B No.4
E4
(*) Electronically Controlled
Transmission Pattern Select SW
5
W-B
IF IU19
SB Combination Meter
C1519
Cowl Side J/B LH
L-R
1
2
3
(*) Pattern Select Switch (PWR Mode Switch)
When the PWR mode switch is pushed in, the switch contact is made and the PWR mode is selected.
To cancel the PWR mode, push the PWR mode switch once again.C1520
SB312
4F 4C
W-BB
B
E8
E8
E818
28 2nd
PWR
5L-W 10
3M
3PCowl Side J/B RH
18
2E66 24
2E 2QP-B
SNWI MPX1 MPX2
- DIAGNOSTICSAUTOMATIC TRANSMISSION
DI-495
688 Author: Date:
2004 LAND CRUISER (RM1071U)
Pattern Select Switch Circuit (PWR Mode Switch)
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and POWER patterns, 2 position, L position
and the lock-up patterns. Following the programs corresponding to the signals from the pattern select
switch, the park/neutral position and other various sensors, the ECM switches the solenoid valves ON and
OFF, and controls the transmission gear change and the lock-up clutch operation.
WIRING DIAGRAM
DI3C5-07
DI3BQ-04
- DIAGNOSTICSAUTOMATIC TRANSMISSION
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582 Author: Date:
2004 LAND CRUISER (RM1071U)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed for that code in the table below and pro-
ceed to the page given.
*
1: ...MIL light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *1Memory
P0500
(DI-274)Vehicle Speed Sensor ºAº
Open or short in No. 1 vehicle speed sensor circuit
No. 1 vehicle speed sensor
Combination meter
ECM
P0705
(DI-402)Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input)Short in park/neutral position switch circuit
Park/neutral position switch
ECM
P0710
(DI-410)Transmission Fluid Temperature
Sensor ºAº CircuitOpen or short in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1
ECM
P0711
(DI-415)Transmission Fluid Temperature
Sensor ºAº PerformanceATF temperature sensor No.1
ECM
P0712
(DI-410)Transmission Fluid Temperature
Sensor ºAº Circuit Low InputShort in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1
ECM
P0713
(DI-410)Transmission Fluid Temperature
Sensor ºAº Circuit High InputOpen in ATF temperature sensor No.1 circuit
ATF temperature sensor No.1
ECM
P0717
(DI-418)Input Speed Sensor Circuit No
SignalOpen or short in speed sensor NT circuit
Speed sensor NT
ECM
P0722
(DI-421)Output Speed Sensor
Open or short in speed sensor SP2 circuit
Speed sensor SP2
ECM
P0724
(DI-424)Brake Switch ºBº Circuit High
Short in stop light switch circuit
Stop light switch
ECM
P0748
(DI-426)Pressure Control Solenoid ºAº
Electrical
(Shift Solenoid Valve SL1)Open or short in shift solenoid valve SL1 circuit
Shift solenoid valve SL1
ECM
P0751
(DI-433)Shift Solenoid ºAº Performance
(Shift Solenoid Valve S1)
Shift solenoid valve S1 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve S1
Automatic transmission assembly
ECM
P0756
(DI-437)Shift Solenoid ºBº Performance
(Shift Solenoid Valve S2)
Shift solenoid valve S2 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve S2
Automatic transmission assembly
ECM
P0771
(DI-441)Shift Solenoid ºEº Performance
(Shift Solenoid Valve SR)
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
Shift solenoid valve SR
Shift solenoid valve SL1
Automatic transmission assembly
ECM
DI-390
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583 Author: Date:
2004 LAND CRUISER (RM1071U)P0776
(DI-445)
Pressure Control Solenoid ºBº
Performance
(Shift Solenoid Valve SL2)
Shift solenoid valve SL2 is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve SL2
Automatic transmission assembly
ECM
P0778
(DI-449)Pressure Control Solenoid ºBº
Electrical
(Shift Solenoid Valve SL2)Open or short in shift solenoid valve SL2 circuit
Shift solenoid valve SL2
ECM
P0781
(DI-453)1-2 Shift
Valve body is blocked up or stuck (1-2 shift valve)
Automatic transmission assembly
ECM
P0818
(DI-457)Driveline Disconnect Switch In-
put CircuitShort in transfer neutral position switch circuit
Transfer neutral position switch
ECM
P0850
(DI-402)Park/Neutral Switch Input Circuit
Short in park/neutral position switch circuit
Park/neutral position switch
ECM
P0973
(DI-460)Shift Solenoid ºAº Control Circuit
Low (Shift Solenoid Valve S1)Open or short in shift solenoid valve S1 circuit
Shift l id l S1
P0974
(DI-460)Shift Solenoid ºAº Control Circuit
High (Shift Solenoid Valve S1)Shift solenoid valve S1
ECM
P0976
(DI-464)Shift Solenoid ºBº Control Circuit
Low (Shift Solenoid Valve S2)Open or short in shift solenoid valve S2 circuit
Shift l id l S2
P0977
(DI-464)Shift Solenoid ºBº Control Circuit
High (Shift Solenoid Valve S2)Shift solenoid valve S2
ECM
P0985
(DI-468)Shift Solenoid ºEº Control Circuit
Low (Shift Solenoid Valve SR)Open or short in shift solenoid valve SR circuit
Shift l id l SR
P0986
(DI-468)Shift Solenoid ºEº Control Circuit
High (Shift Solenoid Valve SR)Shift solenoid valve SR
ECM
P1782
(DI-472)T/F L4 Range Position Switch
PerformanceShort in transfer L4 position switch circuit
Transfer L4 position switch
ECM
P2714
(DI-476)Pressure Control Solenoid ºDº
Performance
(Shift Solenoid Valve SLT)
Shift solenoid valve SLT is stuck open or closed
Valve body is blocked up or stuck
Shift solenoid valve SLT
Automatic transmission assembly
ECM
P2716
(DI-479)Pressure Control Solenoid ºDº
Electrical
(Shift Solenoid Valve SLT)Open or short in shift solenoid valve SLT circuit
Shift solenoid valve SLT
ECM
P2740
(DI-483)Transmission Fluid Temperature
Sensor ºBº CircuitOpen or short in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
ECM
P2742
(DI-483)Transmission Fluid Temperature
Sensor ºBº Circuit LowShort in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
ECM
P2743
(DI-483)Transmission Fluid Temperature
Sensor ºBº Circuit HighOpen in ATF temperature sensor No. 2 circuit
ATF temperature sensor No. 2
ECM
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
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2004 LAND CRUISER (RM1071U)
PARTS LOCATION
- DIAGNOSTICSAUTOMATIC TRANSMISSION
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(3) When operating an OBD II scan tool (complying
with SAE J1978) or hand-held tester to erase the
codes, the DTCs and freeze frame data will be
erased. (See the OBD II scan tool's instruction book
for operating instructions.)
(c) When not using the OBD II scan tool or hand-held tester:
Clearing the DTCs.
(1) Disconnecting the battery terminal or remove the
EFI and ETCS fuse from engine room J/B for 60 se-
conds or more.
4. DATA LIST
HINT:
According to the DATA LIST displayed by the OBD II scan tool or Hand-held tester, you can read the value
of the switch, sensor, actuator and so on without parts removal. Reading the DATA LIST as a first step of
troubleshooting is one method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the OBD II scan tool or Hand-held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of OBD ll scan tool or Hand-held tester.
(f) Select the item º/DIAGNOSIS/ENHANCED OBD ll/DATA LIST/ALL (or ATM)º.
(g) According to the display on tester, read the ºDATA LISTº.
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
STOP LIGHT SWStop light SW Status/
ON or OFFBrake Pedal is depressed: ON
Brake Pedal is released: OFFu
SHIFTActual Gear Position/
1st, 2nd, 3rd, 4th or 5th
Shift Lever Position is;
L: 1st
2: 1st or 2nd
3: 1st, 2nd or 3rd
4: 1st, 2nd, 3rd or 4th
D: 1st, 2nd, 3rd, 4th or 5th
u
PNP SW [NSW]PNP SW Status/
ON or OFFShift lever position is;
P or N: ON
Except P or N: OFF
REVERSEPNP SW Status/
ON or OFFShift lever position is;
R: ON
Except R: OFF
DRIVEPNP SW Status/
ON or OFFShift lever position is;
D and 4: ON
Except D and 4: OFF
Th hift l iti d th
4th/DRIVEPNP SW Status/
ON or OFFShift lever position is;
4: ON
Except 4: OFFThe shift lever position and these
values are different, there are fail-
ures of the PNP switch or shift
cable adjustment
3RDPNP SW Status/
ON or OFFShift lever position is;
3: ON
Except 3: OFFcable adjustment.
2NDPNP SW Status/
ON or OFFShift lever position is;
2 and L: ON
Except 2 and L: OFF
LOWPNP SW Status/
ON or OFFShift lever position is;
L: ON
Except L: OFF
LOCK UP SOLLock Up Solenoid Status/
ON or OFFLock Up: ON
Except Lock Up: OFFu
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PATTERN SW (M)Pattern SW (PWR) Status/
ON or OFFPattern SW (PWR) is;
Pushed in: ON
Pushed once again: OFF
u
SNOW SWPattern SW (2nd) Status/
ON or OFF
IG SW ON: OFF
O
Pattern SW (2nd) Push: ON
O
Pattern SW (2nd) Push: OFF
u
SOLENOID (SLT)Shift Solenoid SLT Status/
ON or OFFIG SW ON: ONu
SOLENOID (SLU)Shift Solenoid SLU Status/
ON or OFFLock Up: ON
Except Lock Up: OFFu
SPD (SP2)
Counter Gear Speed display/
min.: 0 km/h (0 mph)
max.: 255 km/h (158 mph)
Vehicle stopped: 0 km/h (0 mph)u
AT FLUID TEMP
ATF Temp. Sensor No. 1 Value/
min.: -40C (-40F)
max.: 215C (419F)80C (176F)
(After Stall Test)
If the value is º-40C (-40F)º or
º215C (419F)º, ATF temp. sen-
sor No. 1 circuit is opened or
shorted.
5. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the Hand-held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as a first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(a) Warm up the engine.
(b) Turn the ignition switch OFF.
(c) Connect the Hand-held tester to the DLC3.
(d) Turn the ignition switch ON.
(e) Push the ºONº button of Hand-held tester.
(f) Select the item º/DIAGNOSIS/ENHANCED OBD ll/ACTIVE TESTº.
(g) According to the display on tester, perform the ºACTIVE TESTº.
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (31 mph)
[Others]
Press " button: Shift up
Press u button: Shift downPossible to check the operation of
the shift solenoid values.
HINT:
Shifting to the 5th gear is possible
only when the vehicle stops or idle
is ON.
LOCK UP
[Test Details]
Control the shift solenoid SLU to set the ATM to the lock-up condition.
[Vehicle Condition]
Vehicle Speed: 58 km/h (36 mph) or more
Possible to check the SLU opera-
tion.
LINE PRESS UP
[Test Details]
Operate the shift solenoid SLT and raise the line pressure.
[Vehicle Condition]
Vehicle Stopped.
IDL: ON
[Others]
ON: Line pressure up.
OFF: No action (normal operation)
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6. DEFINITION OF TERMS
TermDefinition
Monitor descriptionDescription of what the ECM monitors and how it detects malfunctions (monitoring purpose and its details).
Related DTCsDiagnostic code
Typical enabling condition
Preconditions that allow the ECM to detect malfunctions.
With all preconditions satisfied, the ECM sets the DTC when the monitored value(s) exceeds the malfunction
threshold(s).
Sequence of operation
The priority order that is applied to monitoring, if multiple sensors and components are used to detect the malfunc-
tion.
While another sensor is being monitored, the next sensor or component will not be monitored until the previous
monitoring has concluded.
Required sensor/compo-
nentsThe sensors and components that are used by the ECM to detect malfunctions.
Frequency of operation
The number of times that the ECM checks for malfunctions per driving cycle.
ºOnce per driving cycleº means that the ECM detects malfunction only one time during a single driving cycle.
ºContinuousº means that the ECM detects malfunction every time when enabling condition is met.
DurationThe minimum time that the ECM must sense a continuous deviation in the monitored value(s) before setting a
DTC. This timing begins after the ºtypical enabling conditionsº are met.
Malfunction thresholdsBeyond this value, the ECM will conclude that there is a malfunction and set a DTC.
MIL operation
MIL illumination timing after a defect is detected.
ºImmediatelyº means that the ECM illuminates MIL the instant the ECM determines that there is a malfunction.
º2 driving cycleº means that the ECM illuminates MIL if the same malfunction is detected again in the 2nd driving
cycle.
7. TOYOTA/LEXUS PART AND SYSTEM NAME LIST
This reference list indicates the part names used in this manual along with their definitions.
TOYOTA/LEXUS nameDefinition
Toyota HCAC system, Hydrocarbon adsorptive Catalyst
(HCAC) system, HC adsorptive three-way catalystHC adsorptive three-way catalytic converter
Variable Valve Timing sensor, VVT sensorCamshaft position sensor
Variable valve timing system, VVT systemCamshaft timing control system
Camshaft timing oil control valve, Oil control valve OCV,
VVT, VSVCamshaft timing oil control valve
Variable timing and lift, VVTLCamshaft timing and lift control
Crankshaft position sensor ºAºCrankshaft position sensor
Engine speed sensorCrankshaft position sensor
THAIntake air temperature
Knock control moduleEngine knock control module
Knock sensorEngine knock sensor
Mass or volume air flow circuitMass air flow sensor circuit
Vacuum sensorManifold air pressure sensor
Internal control module, Control module, Engine control
ECU, PCMPower train control module
FC idleDeceleration fuel cut
Idle air control valveIdle speed control
VSV for CCV, Canister close valve VSV for canister controlEvaporative emissions canister vent valve
VSV for EVAP, Vacuum switching valve assembly No. 1,
EVAP VAV, Purge VSVEvaporative emissions canister purge valve
VSV for pressure switching valve, Bypass VSVEvaporative emission pressure switching valve
Vapor pressure sensor, EVAP pressure sensor, Evaporative
emission control system pressure sensorFuel tank pressure sensor
Charcoal canisterEvaporative emissions canister
ORVR systemOn-boad refueling vapor recovery system
Intake manifold runner controlIntake manifold tuning system
Intake manifold runner valve, IMRV, IACV (runner valve)Intake manifold tuning valve
Intake control VSVIntake manifold tuning solenoid valve