2003 LEXUS LS430 Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 4: Function Of Components 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
The hand-held tester can be used at steps 5, 8 and 11. 
1.VEHICLE BROUGHT TO WORKSHOP  
2.(SEE CUSTOMER PROBLEM ANALYSIS C

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LEXUS LS430 2003  Factory Repair Manual TROUBLE CODE (Go to step 7)  
6.(SEE PROBLEM SYMPTOMS TABLE
 )  
7.(SEE DIAGNOSTIC TROUBLE CODE CHART
 )  
8.CIRCUIT INSPECTION (SEE DTC C1711 RIGHT FRONT HEIGHT CONTROL SENSOR 
CIRCUIT, DTC C1712 LEF

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LEXUS LS430 2003  Factory Repair Manual Fig. 5: Air Suspension System Check Sheet 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
1.TEST MODE

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LEXUS LS430 2003  Factory Repair Manual HINT: 
By switching from normal mode into test mode, you can inspect the height control switch, absorber 
control switch, front acceleration sensor and rear acceleration sensor.  
When entering the te

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LEXUS LS430 2003  Factory Repair Manual Fig. 6: Connecting Hand-Held Tester To DLC3 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
TEST MODE 
HINT: 
In step (6), all signals can be checked together.
Check ItemOperation (A)Operation (B)
Heig

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LEXUS LS430 2003  Factory Repair Manual 7. Read the test mode DTCs by following the prompts on the tester screen. 
HINT: 
Refer to the hand-held tester operator's manual for further details. 
DTC of Air Suspension System test mode funct

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LEXUS LS430 2003  Factory Repair Manual

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LEXUS LS430 2003  Factory Repair Manual Fig. 8: Problem Symptoms Table 
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 
HINT: 
Inspect the connectors from the back side while connectors are connected. 
SUSPENSION CONTROL ECU:  
Fig. 9: Identi