2003 LEXUS LS430 check oil

HINT:
According to the DATA LIST displayed by the hand-held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the 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 hand-held tester together with the CAN VIM (controller area network vehicle interface
module) to the DLC3.
d. Turn the ignition switch to the ON position.
e. Push the "ON" button of the hand-held tester.
f. Select the item "DIAGNOSIS/ENHANCED OBD II/DATA LIST".
g. According to the display on tester, read the "DATA LIST".
Fig. 67: Test Item Reference Chart

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HINT:
<003a004b004800510003002700370026000300330013001a001400150003004c0056000300520058005700530058005700030044005100470003004b0044005100470010004b0048004f004700030057004800560057004800550003005200580057005300
5800570003004c00560003001400180013008300260003000b[302°F) or more, there is a short circuit. When
DTC P0713 is output and hand-held tester output is -40°C (-40°F), there is an open circuit. Measure the
resistance between terminal OIL (OT) and body ground.
CHECKING CIRCUIT MALFUNCTION TABLE
HINT:
If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 second).
When P0713 is set, P0711 cannot be detected.
Temperature DisplayedMalfunction
-40 °C (-40° F)Open circuit
150°C (302°F) or moreShort circuit

Fig. 84: DTC Reference Chart
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HINT:
Gear positions in the event of a solenoid valve mechanical problem:
Fig. 85: Gear Position Specification

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Gear position during fail-safe operation:
If any malfunction is detected, the ECM changes into the fail-safe mode to shift into the gear positions as shown
in the table below.
Fig. 86: Gear Position Specification

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MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF" and switching oil pressure to
the valves in the valve body.
The DTC indicates that the reverse sequence valve is locked in the direction the spring stretches and that
shifting to the 6th gear is impossible.
MONITOR STRATEGY
MONITOR STRATEGY TABLE
Related DTCsP0729: Gear 6 incorrect ratio (Reverse sequence
valve)/Rationality check
Require sensors/ComponentsReverse sequence valve
Frequency of operationContinuous
Duration0.4 sec.

The ECM commands gear shifts by turning the shift solenoid valves "ON/OFF" and switching oil pressure to
the valves in the valve body.
The ECM calculates the "actual" transmission gear by comparing the signals from the input speed sensor (NT)
and the output speed sensor (SP2). 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
MONITOR STRATEGY TABLE
TYPICAL ENABLING CONDITIONS
The following items are common to all conditions below.
TYPICAL ENABLING CONDITIONS TABLE
Related DTCsP0781: Valve body/Rationality check
Required sensors/ComponentsValve body, Automatic transmission assembly
Frequency of operationContinuous
Duration<0026005200510047004c0057004c005200510003000b0024000c00030044005100470003000b0025000c00030013001100170003005600480046001100030026005200510047004c0057004c005200510003000b0026000c00030016000300560048004600
110003[
Condition (C) 1 sec.
MIL operation2 driving cycles
Sequence of operationNone
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Turbine speed sensor circuitNot circuit malfunction
Output speed sensor circuitNot circuit malfunction
Shift solenoid valve S1 circuitNot circuit malfunction
Shift solenoid valve S2 circuitNot circuit malfunction
Shift solenoid valve S3 circuitNot circuit malfunction
Shift solenoid valve S4 circuitNot circuit malfunction
Shift solenoid valve SR circuitNot circuit malfunction
Shift solenoid valve SL1 circuitNot circuit malfunction
Shift solenoid valve SL2 circuitNot circuit malfunction
ECT (Engine coolant temperature) sensor circuitNot circuit malfunction
KCS sensor circuitNot circuit malfunction
ETCS (Electric throttle control system)Not system down
Transmission range"D"
ECT40°C (104°F) or more
Spark advance from Max. retard timing by KCS
control0° CA or more
EngineStarting

3.INSPECT EVAPORATIVE EMISSION CONTROL SYSTEM
a. Start the engine. Disconnect the vacuum hose as shown in the illustration.
b. From the hand-held tester ACTIVE TEST mode, select PURGE VSV. Check that a vacuum occurs
at the VSV port.
c. Exit ACTIVE TEST mode and reconnect the vacuum hose.
d. From the hand-held tester ECU DATA MONITOR mode, select PURGE VSV. Check operation of
the purge VSV.
e. Warm up the engine and drive the vehicle. Confirm that the purge VSV is turned from OFF to ON.
Fig. 7: Checking Vacuum

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4.VISUALLY INSPECT HOSES, CONNECTIONS AND GASKETS
a. Check for cracks, leaks or damage.
HINT:
Possible leakage points are indicated in the illustration.
Removal or problems with the engine oil dipstick, filler cap, PCV hose and other components may
cause the engine to run improperly. Disconnection, looseness or cracks in the parts of the air
induction system between the throttle body and cylinder head will allow air suction and cause the
engine trouble.

Standard: 0.6 to 1.0 V
If the result is not as specified, replace the accelerator pedal position sensor.
3.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
Fig. 5: Connecting Hand
-Held Tester DLC3 (2 Of 2)
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a. Connect the hand-held tester (with CAN VIM) to the DLC3.
b. Turn the ignition switch ON.
c. Start and warm up the engine.
d. Connect the hand-held tester and select VVT from the ACTIVE TEST menu.
e. Check the engine speed when the OCV is operated by the hand-held tester.
OK:
ConditionSpecified Condition
VVT system is OFF (OCV is OFF)Normal engine speed
VVT system is ON (OCV is ON)Rough idle or engine stalled

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a. Check the output voltage.
1. Apply battery voltage across terminals 1 (+B) and 2 (E2G).
2. Using a voltmeter, connect the positive (+) tester probe to terminal VG, and negative (-)
tester probe to terminal E2G.
3. Blow air into the MAF meter, and check that the voltage fluctuates.
b. Measure the resistance between terminals 4 (THA) and 5 (E2).
STANDARD:
If the result is not as specified, replace the MAF meter.
2.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSY
ConditionSpecified Condition
-20°C (-4°F)13.6 to 18.4 kohms
20°C (68°F)2.21 to 2.69 kohms
60°C (140°F)0.493 to 0.667 kohms

3.SYSTEM FUNCTION
When the steering lock ECU detects that the unlock warning switch is ON, the ECU provides current to
the transponder key coil and produces a faint electric wave. A transponder chip in the key and receives
the faint electric wave. Upon receiving the faint electric wave, the transponder chip outputs a key ID code
signal. The transponder key coil receives this signal, the transponder key amplifier amplifies it, and then
the signal is transmitted to the ECU.
The ECU matches the key's ID code with the vehicle's ID code, which was previously registered in the
ECU and then communicates the results to the ECM using SFI communication.
After the identification results show that the key's ID code matches the vehicle's ID code and the ECU has
confirmed their match: 1) the immobilizer system does not immobilize the engine and the engine starting
controls (fuel injection control and ignition control) enter standby mode; and 2) the ECU transmits a
security indicator signal that communicates "indicator off" to the theft warning ECU (theft deterrent
ECU). Then, the theft warning ECU turns off the security indicator lamp.
HINT:
Use this procedure to troubleshoot the engine immobilizer system.
The hand-held tester should be used in steps 4, 5 and 7.
1.VEHICLE BROUGHT TO WORKSHOP
2.CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See CUSTOMER
PROBLEM ANALYSIS CHECK )
3.CRANK ENGINE FOR MORE THAN 10 SECONDS
4.CHECK FOR DTCS
a. Check for DTCs and note any codes that are output.
b. Delete the DTC.
c. Recheck for DTCs. Based on the DTC output in (a), try to force output of the same SFI system
DTC or engine immobilizer system DTC by simulating the operation indicated by the DTC.
1. If the DTC does not reoccur, proceed to A.
2. If the SFI system DTC reoccurs, proceed to B.
3. If the engine immobilizer system DTC reoccurs, proceed to C.
B: Go to SFI SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING
)
C: Go to step 8
illuminates or starts blinking.

receives the faint electric wave. Upon receiving the faint electric wave, the transponder chip outputs a key
ID code signal. The transponder key coil receives this signal, the transponder key amplifier amplifies it,
and then the signal is transmitted to the ECU.
The ECU matches the key's ID code with the vehicle's ID code, which was previously registered in the
ECU, and then communicates the results to the ECM using SFI communication.
After the identification results show that the key's ID code matches the vehicle's ID code and the ECU has
confirmed their match: 1) the immobilizer system does not immobilize the engine and the engine starting
controls (fuel injection control and ignition control) enter standby mode; and 2) the ECU transmits a
security indicator signal that communicates "indicator off" to the theft warning ECU (theft deterrent
ECU). Then, the theft warning ECU turns off the security indicator lamp.
HINT:
<00380056004800030057004b004c00560003005300550052004600480047005800550048000300570052000300570055005200580045004f00480056004b00520052005700030057004b0048000300480051004a004c005100480003004c00500050005200
45004c004f004c005d0048005500030056005c005600570048[m. The hand-held tester should be used in steps
4, 5 and 7.
1.VEHICLE BROUGHT TO WORKSHOP
2.CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See CUSTOMER
PROBLEM ANALYSIS CHECK )
3.CRANK ENGINE FOR MORE THAN 10 SECONDS
4.CHECK FOR DTCS
a. Check for DTCs and note any codes that are output.
b. Delete the DTC.
c. Recheck for DTCs. Based on the DTC output in (a), try to force output of the same SFI system
DTC or engine immobilizer system DTC by simulating the operation indicated by the DTC.
1. If the DTC does not reoccur, proceed to A.
2. If the SFI system DTC reoccurs, proceed to B.
3. If the engine immobilizer system DTC reoccurs, proceed to C.
B: Go to SFI SYSTEM (See DIAGNOSTIC TROUBLE CODE CHART
)
C: Go to step 8
A: Go to next step
5.READ DATA LIST USING HAND-HELD TESTER
a. Connect the hand-held tester to the Controller Area Network Vehicle Interface Module (CAN
VIM). Then connect the CAN VIM to the DLC3.
b. Turn the ignition switch ON and push the hand-held tester main switch ON.
c. Read the DATA LIST.