2003 LEXUS LS430 Diagram AC

P0977: Range check (High resistance)
TYPICAL ENABLING CONDITIONS TABLE - P0977
TYPICAL MALFUNCTION THRESHOLDS
P0976: Range check (Low resistance)
TYPICAL MALFUNCTION THRESHOLDS - P0976
P0977: Range check (High resistance)
TYPICAL MALFUNCTION THRESHOLDS TABLE - P0977
COMPONENT OPERATING RANGE
COMPONENT OPERATING RANGE TABLE
WIRING DIAGRAM
Fig. 139: DTC P0976, P0977 - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Shift solenoid valve S2ON
The monitor will run whenever this DTC is not
present.See LIST OF DISABLE A MONITOR
Shift solenoid valve S2OFF
Shift solenoid valve S2 resistance8 ohms or less
Shift solenoid valve S2 resistance100 kohms or more
Shift solenoid valve S2Resistance: 11 to 15 ohms at 20°C (68°F)

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)

Fig. 144: DTC P0979, P0980 - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.INSPECT TRANSMISSION WIRE (S3)
a. Disconnect the transmission wire connector from the transmission.
b. Measure the resistance according to the value(s) in the table below.

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)

Fig. 149: DTC P0982, P0983 - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.INSPECT TRANSMISSION WIRE (S4)
a. Disconnect the transmission wire connector from the transmission.
b. Measure the resistance according to the value(s) in the table below.

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)

Fig. 154: DTC P0985, P0986 - Wiring Diagram
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION PROCEDURE
1.INSPECT TRANSMISSION WIRE (SR)
a. Disconnect the transmission wire connector from the transmission.
b. Measure the resistance according to the value(s) in the table below.

Fig. 162: Typical Enabling Conditions Chart
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TYPICAL MALFUNCTION THRESHOLDS
ON malfunction
TYPICAL MALFUNCTION THRESHOLDS TABLE
WIRING DIAGRAM
Summation of C1 clutch heat generations = -->
(Turbine speed - Output speed x Temporary gear
ratio) xKSpecified value