2003 LEXUS LS430 Factory Repair Manual

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Page 2921 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 15: Checking Leak Detection Pump Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 3. Connect the positive (+) lead of the battery to terminal 7 and the negative (-) lead to terminal 6. 4. Check

Page 2922 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 16: Checking Valve Close Position Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 2.INSPECT VACUUM SWITCHING VALVE ASSY FOR ACIS a. Measure the VSV resistance. Standard: RESISTANCE CONDITION

Page 2923 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 17: Measuring VSV Resistance Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. b. Check VSV operation.

Page 2924 of 4500

LEXUS LS430 2003 Factory Repair Manual 1. Check that air does not flow from port E to port F. If the result is not as specified, replace the VSV assy. Fig. 18: Checking VSV Operation Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 2. App

Page 2925 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 19: Applying Battery Positive Voltage Across Terminals Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 3.INSPECT VENTILATION VALVE SUB-ASSY a. Install a clean hose to the ventilation valve. b.

Page 2926 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 20: Inspecting Ventilation Valve Sub-Assy Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 2. Blow air from the intake manifold side of the engine, and check that air passes through with difficult

Page 2927 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 21: Blowing Air From Intake Manifold Side Of Engine Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 4.INSPECT FUEL TANK CAP ASSY a. Visually check if cap and/or gasket are deformed or damaged. I

Page 2928 of 4500

LEXUS LS430 2003 Factory Repair Manual Fig. 22: Inspecting Fuel Tank Cap Assy Courtesy of TOYOTA MOTOR SALES, U.S.A., INC. 5.INSPECT PURGE VSV a. Measure the purge VSV resistance. Standard: RESISTANCE CONDITION If the result is not
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