STARTER LEXUS LS430 2003 Factory User Guide

TYPICAL ENABLING CONDITIONS
The stop light switch remains on during GO and STOP 10 times.
GO and STOP is defined as follows;
TYPICAL ENABLING CONDITIONS TABLE
TYPICAL MALFUNCTION THRESHOLDS
TYPICAL MALFUNCTION THRESHOLDS TABLE
WIRING DIAGRAM
See DTC P0504, P0571: BRAKE SWITCH "A"/"B" CORRELATION, BRAKE SWITCH "A"
CIRCUIT .
INSPECTION PROCEDURE
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. Turn the ignition switch off.
b. Connect the hand-held tester together with the CAN VIM (controller area network vehicle interface
module) to the DLC3.
Related DTCsP0724: Stop light switch/Range check/Rationality
Required sensors/ComponentsStop light switch
Frequency of operationContinuous
DurationGO and STOP 5 times
MIL operation2 driving cycles
Sequence of operationNone
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
GO: (Vehicle speed is 30 km/h (18.63 mph) or
more)Once
STOP: (Vehicle speed is Less than 3 km/h (1.86
mph))Once
StarterOFF
Battery voltage8 V or more
Ignition switchON
Brake switchRemain ON during GO and STOP 5 times.

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
MONITOR DESCRIPTION
This DTC indicates an open or short in the shift solenoid valve SL1 circuit. The ECM commands gearshift by
turning the shift solenoid valves "ON/OFF". When there is an open or short circuit in any shift solenoid valve
circuit, the ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the
fail-safe function and turns the other shift solenoid valves in good condition "ON/OFF". (In case of an open or
short circuit, the ECM stops sending current to the circuit.)
While driving and shifting between 4th and 5th gears, if the ECM detects an open or short in the shift solenoid
valve SL1 circuit, the ECM determines there is a malfunction (see FAIL
-SAFE CHART ).
MONITOR STRATEGY
MONITOR STRATEGY TABLE
TYPICAL ENABLING CONDITIONS
TYPICAL ENABLING CONDITIONS TABLE
Condition (A)
TYPICAL ENABLING CONDITIONS TABLE - A
Condition (B)
TYPICAL ENABLING CONDITIONS TABLE - B
TYPICAL MALFUNCTION THRESHOLDS
Related DTCsP0748: Shift solenoid valve SL1/Range check
Required sensors/ComponentsShift solenoid valve SL1
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Battery voltage10 V or more and less than 12V
CPU commanded duty ratio to SL1Less than 75%
Ignition SwitchON
StarterOFF
Battery voltage12 V or more
Ignition SwitchON
StarterOFF

This DTC indicates an open or short in the shift solenoid valve SL2 circuit. The ECM commands gear shifts by
turning the shift solenoid valves "ON/OFF". When there is an open or short circuit in any shift solenoid valve
circuit, the ECM detects the problem and illuminates the MIL and stores the DTC. And the ECM performs the
fail-safe function and turns the other shift solenoid valves in good condition "ON/OFF". (In case of an open or
short circuit, the ECM stops sending current to the circuit.)
While driving and shifting gears, if the ECM detects an open or short in the shift solenoid valve SL2 circuit, the
ECM determines there is a malfunction (see FAIL
-SAFE CHART ).
MONITOR STRATEGY
MONITOR STRATEGY TABLE
TYPICAL ENABLING CONDITIONS
TYPICAL ENABLING CONDITIONS TABLE
All of the following conditions are met: Condition (A) and (B)
Condition (A)
TYPICAL ENABLING CONDITIONS TABLE - A
Condition (B)
TYPICAL ENABLING CONDITIONS TABLE - B
TYPICAL MALFUNCTION THRESHOLDS
TYPICAL MALFUNCTION THRESHOLDS TABLE
Related DTCsP0778: Shift solenoid valve SL2/Range check
Required sensors/ComponentsShift solenoid valve SL2
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Battery voltage10 V or more and less than 12V
CPU commanded duty ratio to SL275% or more
Ignition SwitchON
StarterOFF
Battery voltage12 V or more
Ignition SwitchON
StarterOFF

P0979: Range check (Low resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0979
P0980: Range check (High resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0980
TYPICAL MALFUNCTION THRESHOLDS
P0979: Range check (Low resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0979
P0980: Range check (High resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0980
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Shift solenoid valve S3ON
Battery voltage8 V or more
Ignition switchON
StarterOFF
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Shift solenoid valve S3OFF
Battery voltage8 V or more
Ignition switchON
StarterOFF
Shift solenoid valve S3 resistance8 ohms or less
Shift solenoid valve S3 resistance100 kohms or more
Shift solenoid valve S3Resistance 11 to 15ohms at 20° C (68° F)

P0983: Range check (High resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0983
TYPICAL MALFUNCTION THRESHOLDS
P0982: Range check (Low resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0982
P0983: Range check (High resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0983
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
Shift solenoid valve S4ON
Battery voltage8 V or more
Ignition switchON
StarterOFF
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Shift solenoid valve S4OFF
Battery voltage8 V or more
Ignition switchON
StarterOFF
Shift solenoid valve S4 resistance8 ohms or less
Shift solenoid valve S4 resistance100 kohms or more
Shift solenoid valve S4Resistance: 11 to 15 ohms at 20°C (68°F)

P0983: Range check (High resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0983
TYPICAL MALFUNCTION THRESHOLDS
P0982: Range check (Low resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0982
P0983: Range check (High resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0983
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
Battery voltage8 V or more
Ignition switchON
StarterOFF
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Shift solenoid valve SROFF
Battery voltage8 V or more
Ignition switchON
StarterOFF
Shift solenoid valve SR resistance8 ohms or less
Shift solenoid valve SR resistance100 kohms or more
Shift solenoid valve SRResistance: 11 to 15 ohms at 20°C (68°F)

MONITOR STRATEGY TABLE
TYPICAL ENABLING CONDITIONS
TYPICAL ENABLING CONDITIONS TABLE
TYPICAL MALFUNCTION THRESHOLDS
TYPICAL MALFUNCTION THRESHOLDS TABLE
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
Related DTCsP2716: Shift solenoid valve SLT/Range check
Required sensors/ComponentsShift solenoid valve SLT
Frequency of operationContinuous
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Solenoid current cut statusNot cut
CPU command duty ratio to SLT19% or more
Battery voltage11 V or more
Ignition switchON
StarterOFF
Solenoid status (SLT) from ICFail (Open or short)
Output signal dutyLess than 100%

TYPICAL ENABLING CONDITIONS
TYPICAL ENABLING CONDITIONS TABLE
TYPICAL MALFUNCTION THRESHOLDS
TYPICAL MALFUNCTION THRESHOLDS TABLE
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
Fig. 183: DTC P2759 - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
Duration1 sec.
MIL operationImmediate
Sequence of operationNone
The monitor will run whenever this DTC is not
present.SEE LIST OF DISABLE A MONITOR
Solenoid current cut statusNot cut
CPU commanded duty ratio to SLU19% or more
Battery voltage11 V or more
Ignition switchON
StarterOFF
Solenoid status (SLU) from ICFail (Open or short)
Output signal dutyLess than 100%

Fig. 45: Identifying Lower Intake Manifold
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
53.REMOVE STARTER ASSY (See REPLACEMENT
)

Fig. 62: Identifying Seal Packing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
101.INSTALL GENERATOR ASSY (See REPLACEMENT
)
102.INSTALL STARTER ASSY (See REPLACEMENT
)
103.INSTALL INTAKE MANIFOLD ASSY
a. Place 2 new gaskets on the cylinder heads with the white mark facing outward.