LEXUS LS430 2003 Factory Repair Manual

Fig. 33: Identifying Height Control Sensor Rear LH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
B: REPLACE HEIGHT CONTROL SENSOR SUB-ASSY FRONT RH (SEE REPLACEMENT
)
C: REPLACE HEIGHT CONTROL SENSOR SUB-ASSY FRONT LH (SEE REPLACEMENT
)
D: REPLACE HEIGHT CONTROL SENSOR SUB-ASSY REAR RH (SEE REPLACEMENT
)
E: REPLACE HEIGHT CONTROL SENSOR SUB-ASSY REAR LH (SEE REPLACEMENT
)
A: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT
)
4.CHECK HARNESS AND CONNECTOR (SUSPENSION CONTROL ECU - HEIGHT
CONTROL SENSOR SUB-ASSY) (SEE ELECTRONIC CIRCUIT INSPECTION PROCEDURE
)
a. Disconnect the suspension control ECU A20 or A22 connector.
b. Measure the resistance according to the value (s) in the table below.

TESTER CONNECTION STANDARD SPECIFIED CONDITION STANDARD (FRONT RH)
Fig. 34: Identifying Suspension Control ECU A20 Or A22 Connector Terminals

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TESTER CONNECTION STANDARD SPECIFIED CONDITION STANDARD (FRONT LH)
Tester ConnectionSpecified Condition
A20-20 (SBR1) - H14-1 (SHB)Below 1 ohms
A20-21 (SGR1) - H14-4 (SHG)Below 1 ohms
A20-20 (SBR1) - Body ground10 Kohms or higher
A20-21 (SGR1) - Body ground10 Kohms or higher
Tester ConnectionSpecified Condition
A20-18 (SBL1) - H13-1 (SHB)Below 1 ohms
A20-22 (SGL1) - H13-4 (SHG)Below 1 ohms
A20-18 (SBL1) - Body ground10 Kohms or higher
A20-22 (SGL1) - Body ground10 Kohms or higher

Fig. 35: Identifying Front Height Control Sensor Sub-Assy Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TESTER CONNECTION STANDARD SPECIFIED CONDITION STANDARD (REAR RH)
Tester ConnectionSpecified Condition
A22-25 (SGR2) - H31-3 (SHG)Below 1 ohms
A22-26 (SBR2) - H31-1 (SHB)Below 1 ohms
A22-25 (SGR2) - Body ground10 Kohms or higher
A22-26 (SBR2) - Body ground10 Kohms or higher

Fig. 36: Identifying Height Control Sensor Sub-Assy Rear RH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
TESTER CONNECTION STANDARD SPECIFIED CONDITION STANDARD (REAR LH)
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Tester ConnectionSpecified Condition
A22-23 (SGL2) - H30-1 (SHG)Below 1 ohms
A22-24 (SBL2) - H30-3 (SHB)Below 1 ohms
A22-23 (SGL2) - Body ground10 Kohms or higher
A22-24 (SBL2) - Body ground10 Kohms or higher

Fig. 37: Identifying Height Control Sensor Sub-Assy Rear LH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK:Go to next step
5.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. 38: Identifying Suspension Control ECU A21 Or A22 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. 39: Identifying Height Control Sensor Front RH Connector Terminals
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. 40: Identifying Height Control Sensor Front LH Connector Terminals
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. 41: Identifying Height Control Sensor Rear RH Connector Terminals
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
Tester ConnectionSpecified Condition
A22-30 (SHRL) - H30-2 (SHRL)Below 1 ohms
A22-30 (SHRL) - Body ground10 Kohms or higher

Fig. 42: Identifying Height Control Sensor Rear LH Connector Terminals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
OK:Go to next step
6.CHECK 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