2003 LEXUS LS430 Identifying condition

Fig. 62: Identifying Transmission Wire Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
ATF TEMPERATURE SENSOR - RESISTANCE TABLE
c. Measure the resistance according to the value(s) in the table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
1 (OT-) - 9 (OT+)79ohms to 156kohms

Fig. 70: Identifying Waveform
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
WAVEFORM REFERENCE TABLE
MONITOR DESCRIPTION
This DTC indicates that pulse is not output from the speed sensor NT (Turbine (input) speed sensor) or is output
only little. The NT terminal of the ECM detects the revolving signal from speed sensor (NT) (input RPM). The
ECM outputs a gearshift signal comparing the input speed sensor (NT) with the output speed sensor (SP2).
While the vehicle is operating in the 4th, 5th or 6th gear position in the shift position of D, if the input shaft
revolution is less than 300 rpm*1 although the output shaft revolution is more than 300 rpm or more*2, the
ECM detects the trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output
*2: The vehicle speed is approx. 50 km/h (31 mph) or more.
TerminalNT+ - NT-
Tool setting1V/DIV, 2ms/DIV
Vehicle conditionEngine idle speed (P or N position)

TRANSMISSION WIRE - RESISTANCE TABLE
c. Measure the resistance according to the value(s) in the table below.
Fig. 90: Identifying Transmission Wire Connector Terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard (Check for short):
Fig. 91: Tester Connection Reference Chart

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Tester ConnectionSpecified Condition 20°C (68°F)
11 (SL1+)-3(SL1-)5.0 to 5.6 ohms

Fig. 121: Identifying Transmission Wire Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSMISSION WIRE (SL2) - RESISTANCE TABLE
c. Measure the resistance according to the value(s) in the table below.
OK:
Standard (Check for short):
Tester ConnectionSpecified Condition 20°C (68°F)
10 (SL2+) - 2 (SL2-)5.0 to 5.6 ohms

1.INSPECT TRANSMISSION WIRE (S1)
a. Disconnect the transmission wire connector from the transmission.
b. Measure the resistance according to the value(s) in the table below.
Fig. 135: Identifying Transmission Wire Terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSMISSION WIRE (S1) - RESISTANCE TABLE
NG: Go to step 3
OK: Go to next step
2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
a. Connect the transmission connector to the transmission.
b. Disconnect the connector from the ECM.
Tester ConnectionSpecified Condition 20°C (68°F)
8 - Body ground11 to 15ohms

INSPECTION PROCEDURE
1.INSPECT TRANSMISSION WIRE (S2)
a. Disconnect the transmission wire connector from the transmission.
b. Measure the resistance according to the value(s) in the table below.
Fig. 140: Identifying Transmission Wire Connector Terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSMISSION WIRE (S2) - RESISTANCE TABLE
NG: Go to step 3
OK: Go to next step
2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
a. Connect the transmission connector to the transmission.
Tester ConnectionSpecified Condition 20°C (68°F)
15 - Body ground11 to 15ohms

Fig. 145: Identifying Transmission Wire Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSMISSION WIRE (S3) - RESISTANCE TABLE
NG: Go to step 3
OK: Go to next step
2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
a. Connect the transmission connector to the transmission.
b. Disconnect the connector from the ECM.
c. Measure the resistance accordin
g to the value(s) in the table below.
Tester ConnectionSpecified Condition 20°C (68°F)
7 - Body ground11 to 15ohms

Fig. 150: Identifying Transmission Wire Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
Standard:
TRANSMISSION WIRE (S4) - RESISTANCE TABLE
NG: Go to step 3
OK: Go to next step
2.CHECK HARNESS AND CONNECTOR (TRANSMISSION WIRE - ECM)
a. Connect the transmission connector to the transmission.
b. Disconnect the connector from the ECM
c. Measure the resistance accordin
g to the value(s) in the table below.
Tester ConnectionSpecified Condition 20°C (68°F)
14 - Body ground11 to 15 ohms