2003 LEXUS LS430 sensor

NG: Go to step 3
OK: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT
)
3.CHECK HARNESS AND CONNECTOR (HEIGHT CONTROL SENSOR SUB-ASSY POWER
SOURCE) (SEE ELECTRONIC CIRCUIT INSPECTION PROCEDURE
)
a. Disconnect the height control sensor sub-assy connector.
b. Turn the ignition switch to the ON position.
c. Measure the voltage according to the value (s) in the table below.
TESTER CONNECTION STANDARD SPECIFIED CONDITION (FRONT RH)
Fig. 22: Identifying Front Height Control Sensor Sub
-Assy Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TESTER CONNECTION STANDARD SPECIFIED CONDITION Standard (Front LH)
Tester ConnectionSpecified Condition
H14-1 (SHB) - H14-4 (SHG)4.5 to 5.5 V
Tester ConnectionSpecified Condition
H13-1 (SHB) - H13-4 (SHG)4.5 to 5.5 V

Fig. 23: Identifying Height Control Sensor Sub-Assy Connector Terminals - RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TESTER CONNECTION STANDARD SPECIFIED CONDITION STANDARD (Rear RH)
TESTER CONNECTION STANDARD SPECIFIED CONDITION STANDARD (REAR LH)
Tester ConnectionSpecified Condition
H31-1 (SHB) - H31-3 (SHG)4.5 to 5.5 V
Tester ConnectionSpecified Condition
H30-1 (SHG) - H30-3 (SHB)4.5 to 5.5 V

Fig. 24: Identifying Height Control Sensor Sub-Assy Connector Terminals - LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
NG: Go to step 4
OK:Go to next step
d.CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - HEIGHT
CONTROL SENSOR SUB-ASSY) (SEE ELECTRONIC CIRCUIT INSPECTION
PROCEDURE )
a. Disconnect the suspension control ECU A21 or A22 connector.
b. Measure the resistance according to the value (s) in the table below.

Fig. 25: Identifying Suspension Control ECU Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HEIGHT CONTROL SENSOR FRONT RH: (C1711)
TESTER CONNECTION STANDARD SPECIFIED CONDITION:
Tester ConnectionSpecified Condition
A21-20 (SHFR) - H14-2 (SHFR)Below 1 ohms
A21-20 (SHFR) - Body ground10 Kohms or higher

Fig. 26: Identifying Height Control Sensor Sub-Assy Connector Terminals - RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HEIGHT CONTROL SENSOR FRONT LH: (C1712)
TESTER CONNECTION STANDARD SPECIFIED CONDITION
Tester ConnectionSpecified Condition
A21-22 (SHFL) - H13-2 (SHFL)Below 1 ohms
A21-22 (SHFL) - Body ground10 Kohms or higher

Fig. 27: Identifying Height Control Sensor Sub-Assy Connector Terminals - LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HEIGHT CONTROL SENSOR REAR RH: (C1713)
TESTER CONNECTION STANDARD SPECIFIED CONDITION
Tester ConnectionSpecified Condition
A22-28 (SHRR) - H31-2 (SHRR)Below 1 ohms
A22-28 (SHRR) - Body ground10 Kohms or higher

Fig. 28: Identifying Height Control Sensor Sub-Assy Connector Terminals RH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
HEIGHT CONTROL SENSOR REAR LH: (C1714)
TESTER CONNECTION STANDARD SPECIFIED CONDITION
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK:Go to next step
Tester ConnectionSpecified Condition
A22-30 (SHRL) - H30-2 (SHRL)Below 1 ohms
A22-30 (SHRL) - Body ground10 Kohms or higher

Fig. 29: Identifying Height Control Sensor Sub-Assy Connector Terminals LH
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
e.INSPECT HEIGHT CONTROL SENSOR SUB-ASSY
HEIGHT CONTROL SENSOR FRONT RH: (C1711)
a. Measure the resistance according to the value (s) in the table below.
TESTER CONNECTION STANDARD SPECIFIED CONDITION
RESULT DESCRIPTION
Tester ConnectionSpecified Condition
1 (SHB) - 4 (SHG)3.0 to 5.6 Kohms
1 (SHB) - 2 (SHFR)0.4 to 3.9 Kohms
OKA
NGB