2003 LEXUS LS430 replacement

Fig. 129: Data List Value - Air sus
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d. Check that the value displayed on the hand-held tester changes by pressing the height control
switch "HIGH" or "NORM" button.
OK:
Height control switch value changes.
NG: Go to step 2
OK: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT
)
2.INSPECT HEIGHT CONTROL SWITCH
a. Disconnect the height control switch connector.
b. Measure the resistance according to the value (s) in the table below.
TESTER CONNECTION STANDARD SPECIFIED CONDITION
NG: REPLACE HEIGHT CONTROL SWITCH
OK:Go to next step
Switch ConditionTester ConnectionSpecified Condition
"HIGH"2 (IGH) - 4 (HSW)Below 1 ohms
"NORM"2 (IGH) - 4 (HSW)10 Kohms or higher

Fig. 133: Identifying Height Control Switch Connector Terminals
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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT
)
CIRCUIT DESCRIPTION
The absorber control switch is used to select the attenuation modes of the shock absorber. 2 levels of
attenuation, "SPORT" and "NORM", are available.

Fig. 139: Identifying Absorber Control Switch Connector Terminals
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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT
)
CIRCUIT DESCRIPTION
The vehicle height is controlled by pressing the "HIGH" button of the height control switch, "Height Hi" is
displayed on the multi-information display.

Fig. 151: Identifying DLC3 Connector Terminals
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NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE SUSPENSION CONTROL ECU (SEE REPLACEMENT
)

Fig. 3: Identifying Component Locations (3 Of 3)
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REPLACEMENT
HINT:
See COMPONENTS
See LOCATION
Installation is in the reverse order of removal.
Set to "SHIP" mode to prevent mechanical damage due to any impacts when the radio is transported.
Attach the label shown below to the top of the product case so as not to skip any procedure and to follow
the procedure correctly.
1.SHIP MODE SETTING
a. Take out all CDs.
b. Turn the ignition switch to the OFF position.
c. While holdin
g the "UP" and "DISC" switches, turn the ignition switch to the ACC position.

Fig. 6: Identifying CD Indicator Blinking Light
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2.REMOVE INSTRUMENT PANEL FINISH PANEL LOWER CENTER (See step 26 on
REPLACEMENT
)
3.REMOVE PANEL INSTRUMENT CLUSTER FINISH LOWER (See step 27 on
REPLACEMENT
)
4.REMOVE RADIO RECEIVER ASSEMBLY W/BRACKET
a. w/o Multi-display:
Remove the 2 bolts and disengage the 5 clips.

Fig. 10: Identifying Radio Receiver Assy Screws And Brackets
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7.INSTALL RADIO RECEIVER ASSEMBLY W/BRACKET
a. Make sure that the battery negative terminal is disconnected.
b. Connect the connector.
c. Install the radio receiver assembly with the 2 bolts.
REPLACEMENT
HINT:
See COMPONENTS .
See LOCATION .
Installation is in the reverse order of removal.

1.SHIP MODE SETTING (See REPLACEMENT )
2.REMOVE INSTRUMENT PANEL FINISH PANEL LOWER CENTER (See step 26 on
REPLACEMENT
)
3.REMOVE PANEL INSTRUMENT CLUSTER FINISH LOWER (See step 27 on
REPLACEMENT
)
4.REMOVE RADIO RECEIVER ASSEMBLY W/BRACKET (See REPLACEMENT
)
5.SHIP MODE CONFIRMATION (See REPLACEMENT
)
6.REMOVE TEMPERATURE CONTROL SWITCH ASSY
a. Disengage the 2 claws.
b. Disconnect the connector and remove the temperature control switch assembly.
c. Perform the same procedure on the other side.
Fig. 11: Disengaging Claws

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7.REMOVE INSTRUMENT CLUSTER FINISH PANEL SUB-ASSY CENTER
a. Remove the 4 bolts.
b.Disengage the 4 clips.