2003 LEXUS LS430 engine

OFF malfunction (C)
TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION C
OFF malfunction (D)
TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION D
[ON malfunction]
Both of the following conditions are met: ON malfunction (A) and (B)
2 detections are necessary per driving cycle:
1st detection; temporary flag ON
2nd detection; pending fault code ON
ON malfunction (A)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION A
ON malfunction (B)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION B
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate
without parts removal. Performing the ACTIVE TEST as the 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.
Turbine speed-Output speed x 5th gear ratio (NT-
NO x 5th gear ratio)1,000 rpm or more
Turbine speed-Output speed x 6th gear ratio (NT-
NO x 6th gear ratio)1,000 rpm or more
Turbine speed/Output speed (NT/NO)1.83 or more and 2.27 or less (This means actual
gear is 2nd)
Turbine speed/Output speed (NT/NO)0.66 or more and 0.80 or less (This means actual
gear is 5th)

OFF malfunction (A)
TYPICAL ENABLING CONDITIONS TABLE - OFF MALFUNCTION A
OFF malfunction (B)
TYPICAL ENABLING CONDITIONS TABLE - OFF MALFUNCTION B
ON malfunction (A)
TYPICAL ENABLING CONDITIONS TABLE - ON MALFUNCTION A
ON malfunction (B)
TYPICAL ENABLING CONDITIONS TABLE - ON MALFUNCTION B
TYPICAL MALFUNCTION THRESHOLDS
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
ECM selected gear1st
Vehicle speed2 km/h (1.2 mph) or more and Less than 40 km/h
(24.9 mph)
Engine speed-Turbine speed (NE-NT)50 rpm or more
ECM selected gear6th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)
ECM selected gear5th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)
ECM selected gear6th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)

[OFF malfunction]
Both of the following conditions are met: OFF malfunctions (A) and (B)
OFF malfunction (A)
TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION A
OFF malfunction (B)
TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION B
[ON malfunction]
Both of the following conditions are met: ON malfunctions (A) and (B)
ON malfunction (A)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION A
ON malfunction (B)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION B
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate
without parts removal. Performing the ACTIVE TEST as the 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 together with the CAN VIM (controller area network vehicle interface
module) to the DLC3.
Turbine speed/Output speed (NT/NO)1.23 or more and 1.48 or less (This means actual
gear is 3rd)
Turbine speed/Output speed (NT/NO)0.66 or more and 0.80 or less (This means actual
gear is 5th
Turbine speed/Output speed (NT/NO)0.50 or more and 0.64 or less (This means actual
gear is 6th)
Turbine speed/Output speed (NT/NO)0.50 or more and 0.64 or less (This means actual
gear is 6th)

Fig. 108: Monitor Strategy Specification Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TYPICAL ENABLING CONDITIONS
The following items are common to all conditions below.
TYPICAL ENABLING CONDITIONS TABLE
OFF malfunction (A)
TYPICAL ENABLING CONDITIONS TABLE - OFF MALFUNCTION A
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
ECM selected gear2nd

OFF malfunction (B)
TYPICAL ENABLING CONDITIONS TABLE - OFF MALFUNCTION B
ON malfunction (A)
TYPICAL ENABLING CONDITIONS TABLE - ON MALFUNCTION A
ON malfunction (B)
TYPICAL ENABLING CONDITIONS TABLE - ON MALFUNCTION B
ON malfunction (C)
TYPICAL ENABLING CONDITIONS TABLE - ON MALFUNCTION C
TYPICAL MALFUNCTION THRESHOLDS
[OFF malfunction]
Both of the following conditions are met: OFF malfunctions (A) and (B)
OFF malfunction (A)
Vehicle speed2 km/h (1.2 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)
ECM selected gear6th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)
ECM selected gear4th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)
Current ECM selected gear5th
Last ECM selected gear4th
Vehicle speed (During transition from 4th to 5th
gear)Less than 100 km/h (62.2 mph)
ECM selected gear5th
Engine speed - Turbine speed (NE - NT) (After
transition to 5th gear)Less than 150 rpm
Vehicle speed (After transition to 5th gear)Less than 100 km/h (62.2 mph)

TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION A
OFF malfunction (B)
TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION B
[ON malfunction]
One of the following conditions is met: ON malfunctions (A), (B) and (C)
ON malfunction (A)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION A
ON malfunction (B)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION B
ON malfunction (C)
TYPICAL MALFUNCTION THRESHOLDS TABLE - ON MALFUNCTION C
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand-held tester allows the relay, VSV, actuator and so on to operate
without parts removal. Performing the ACTIVE TEST as the 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 han
d-held tester together with the CAN VIM (controller area network vehicle interface
Turbine speed/Output speed (NT/NO)0.93 or more and 1.07 or less (This means actual
gear is 3rd)
Turbine speed/Output speed (NT/NO)0.50 or more and 0.64 or less (This means actual
gear is 6th)
Turbine speed/Output speed (NT/NO)1.23 or more and 1.48 or less (This means actual
gear is 3rd)
Turbine speed - Output speed x 4th gear ratio (NT-
NO x 4th gear ratio)1,000 rpm or more
Turbine speed - Output speed x 5th gear ratio (NT-
NO x 5th gear ratio)1,000 rpm or more

c. Start the engine and warm it up.
d. Measure the line pressure with SST.
e. Turn the hand - held tester ON.
f. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST.
g. Follow the instructions on the tester and perform the ACTIVE TEST.
h. Measure the line pressure with SST.
ITEM DIAGNOSTIC NOTE CHART
NG: REPLACE SHIFT SOLENOID VALVE SLT
OK: GO TO NEXT STEP
3.INSPECT SHIFT SOLENOID VALVE (S3)
a. Remove the shift solenoid valve S3.
b. Measure the resistance according to the value(s) in the table below.
Standard:
SHIFT SOLENOID VALVE (S3) - RESISTANCE TABLE
ItemTest DetailsDiagnostic Note
LINE PRESS UP(1)
[Test Details]
Operate shift solenoid SLT and
raise line pressure
[Vehicle Condition]
Vehicle stopped
IDL: ON

HINT:
OFF: Line pressure up (when
Active Test "LINE PRESS UP" is
performed, ECM commands SLT
solenoid to turn OFF)
ON: No action (normal operation)
-
HINT:
The pressure values in ACTIVE TEST and HYDRAULIC TEST are different from each other.
Normally, the line pressure detected in the ACTIVE TEST is approximately half of the value
detected in the HYDRAULIC TEST's stall test.
(1)"LINE PRESS UP" in the ACTIVE TEST is performed to check the line pressure change by
connecting SST to the automatic transmission, which is used in the HYDRAULIC TEST
(see )

OFF malfunction (A)
TYPICAL ENABLING CONDITIONS TABLE - OFF MALFUNCTION A
OFF malfunction (B)
TYPICAL ENABLING CONDITIONS TABLE - OFF MALFUNCTION B
TYPICAL MALFUNCTION THRESHOLDS
Both of the following conditions are met: OFF malfunctions (A) and (B)
OFF malfunction (A)
TYPICAL MALFUNCTION THRESHOLDS TABLE - OFF MALFUNCTION A
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
ECM selected gear5th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)
ECM selected gear6th
Vehicle speed2 km/h (1.2 mph) or more
Throttle valve opening angle6.5% or more at 2,000 rpm (Conditions vary with
engine speed)