Engine Controls - Removal, Overhaul & Installation: Other Lexus ES XV30

INTAKE AIR CONTROL VALVE

Note. Intake Air Control (IAC) valve is used on Acoustic Control Induction System (ACIS).

INTAKE AIR CONTROL VALVE VACUUM SWITCHING VALVE

Note. Intake air control valve VSV may also be referred to as Acoustic Control Induction System (ACIS) vacuum switching valve.

ENGINE CONTROL MODULE (ECM)

AIR/FUEL RATIO (A/F) SENSOR

Note. Air/Fuel Ratio (A/F) sensor may also be referred to as Air/Fuel (A/F) sensor.

HEATED OXYGEN SENSOR

Note. Bank No. 1 refers to bank that includes cylinder No. 1. Bank No. 2 refers to bank without cylinder No. 1. Sensor No. 1 refers to sensor closest to engine block. Sensor No. 2 refers to sensor farthest away from engine block.

PARK/NEUTRAL POSITION (PNP) SWITCH

Note. ES300 and SC430 information is not available.

CAMSHAFT POSITION (CMP) SENSOR

Note. On ES300 & RX300, Camshaft Position (CMP) sensor is also known as Variable Valve Timing (VVT) sensor. For VVT sensor removal and installation, see VARIABLE VALVE TIMING SENSOR .

FUEL SYSTEM

Scheme 69

1. On ES300, IS300, GS300, GS430 and LS430, remove rear seat cushion and cover plate on floor panel for access to electrical connector for fuel pump. Disconnect electrical connector for fuel pump. This is electrical connector for fuel pump and fuel gauge sending unit. Go to step 4.
2. On LX470, disconnect electrical connector for fuel pump. (Scheme 69) This is electrical connector for fuel pump and fuel gauge sending unit. Go to step 4.
3. On RX300, remove driver's side rear seat. Remove carpet and cover plate on floor panel for access to electrical connector for fuel pump. Disconnect electrical connector for fuel pump. This is electrical connector for fuel pump and fuel gauge sending unit, and is located on top of fuel tank, near fuel pump. Go to next step.
4. On all models, start engine and allow engine to idle until engine stalls. Turn ignition off. Reinstall electrical connector for fuel pump and any removed components.
5. Disconnect negative battery cable. Place suitable container under fuel line connection. Cover fuel line connection with shop towel. Slowly loosen fuel line connection, allowing any fuel pressure to be released. Once fuel pressure is released, fuel system components may be serviced.

GS300, IS300, GS430 & LX470

1. Ensure fuel line connector is clean. Disconnect fuel line connector as illustrated. (Scheme 70) If connector and line are stuck, pinch retainer, push and pull connector to free. DO NOT use tools to disconnect connector. After disconnecting, ensure seal surface is clean. Cover connector with plastic to prevent damage.
2. When removing retainer from fuel line, replace with new one. Apply small amount of engine oil to fuel line tip for easier installation. Push connector and retainer together until a click sound is heard. Ensure connection is secure by pulling on connector. Start engine and check for leaks.

Scheme 70

FUEL FILTER (IN-TANK)

Note. LX470 is not equipped with an in-tank fuel filter. Fuel filter is located in engine compartment. see scheme 16

FUEL PRESSURE REGULATOR

Note. All models except LX470 use a returnless fuel system. Fuel pressure regulator is mounted to fuel pump assembly and is located in fuel tank. LX470 uses a fuel return system with fuel pressure regulator mounted on fuel rail.

FUEL PUMP SWITCH

Note. Fuel pump switch may also be referred to as fuel pump inertia switch or fuel pump control switch.

RX300

If IAC valve replacement is necessary, remove throttle body. See THROTTLE BODY .

CHARCOAL CANISTER

Note. Charcoal canister is also referred to as EVAP canister.

Scheme 71

Scheme 72

Scheme 73

Scheme 74

Scheme 75

1. DISCHARGE FUEL SYSTEM PRESSURE (See «FUEL SYSTEM (3MZ-FE)»(ref-209000-S33338508272005121000000) )
2. DISCONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL)
3. REMOVE REAR SEAT CUSHION ASSY (See «REAR SEAT»(ref-215859-S10036550042006071900000) )
4. REMOVE REAR FLOOR SERVICE HOLE COVER
5. REMOVE FUEL SUCTION W/PUMP & GAUGE TUBE ASSY (See «Removal (ES300)»(ref-134951-S28688493722002022100000) )
6. DRAIN FUEL
7. REMOVE FLOOR PANEL BRACE REAR (in needed)
8. REMOVE EXHAUST PIPE ASSY CENTER
9. DISCONNECT PARKING BRAKE CABLE ASSY NO.2
10. DISCONNECT PARKING BRAKE CABLE ASSY NO.3
11. REMOVE FUEL TANK PROTECTOR LOWER CENTER (See «FUEL TANK ASSY (3MZ-FE)»(ref-209000-S35311187592005121000000) )
12. REMOVE FUEL TANK ASSY (See «FUEL TANK ASSY (3MZ-FE)»(ref-209000-S35311187592005121000000) )
13. REMOVE CHARCOAL CANISTER ASSY Disconnect the VSV connector. Remove the 2 wire harness clamps. Disconnect the fuel hose No. 1. Disconnect the fuel tank vent hose. Deeply push the quick connector to release the lock pin. Pinch portion A. Pull out the fuel tank vent hose. Remove the 2 bolts. Unfasten the claw, then remove the charcoal canister.
14. REMOVE FUEL EMISSION TUBE FUEL HOSE Remove the fuel emission tube fuel hose.
15. INSTALL FUEL EMISSION TUBE FUEL HOSE
16. INSTALL CHARCOAL CANISTER ASSY Install the charcoal canister with the 2 bolts. Torque: 40 N.m (400 kgf.cm, 29 ft.bl) Connect the fuel tank vent hose. Push in the quick connector to the pipe until the quick connector makes a "click" sound. NOTE: Check the connected part for damage or foreign objects. After connecting, check if the quick connector and pipe are securely connected by pulling on them. Connect the fuel hose No. 1. Install the 3 wire harness clamps. Connect the VSV connector.
17. INSTALL FUEL TANK ASSY (See «FUEL TANK ASSY (3MZ-FE)»(ref-209000-S35311187592005121000000) )
18. INSTALL FUEL TANK PROTECTOR LOWER CENTER (See «FUEL TANK ASSY (3MZ-FE)»(ref-209000-S35311187592005121000000) )
19. INSTALL PARKING BRAKE CABLE ASSY NO. 3
20. INSTALL PARKING BRAKE CABLE ASSY NO. 2
21. INSTALL EXHAUST PIPE ASSY CENTER
22. INSTALL FUEL SUCTION W/PUMP & GAUGE TUBE ASSY
23. CONNECT ENGINE WIRE NO. 3 (BATTERY NEGATIVE TERMINAL) Torque: 5.4 N.m (55 kgf.cm, 48 in.lbf)
24. ADD FUEL
25. CHECK FOR FUEL LEAKS (See «ON-VEHICLE INSPECTION»(ref-209000-S27270245282005121000000) )
26. CHECK FOR EXHAUST GAS LEAKS
27. INSTALL REAR FLOOR SERVICE HOLE COVER
28. INSTALL REAR SEAT CUSHION ASSY . See «REAR SEAT»(ref-215859-S10036550042006071900000) .
29. INSTALL FLOOR PANEL BRACE REAR

VARIABLE VALVE TIMING (VVT) INTAKE CAMSHAFT PULLEY

For removal and installation procedure of variable valve timing intake camshaft pulley, see appropriate article in ENGINES.

VARIABLE VALVE TIMING (VVT) SENSOR

Note. GS300 and IS300 models are equipped with variable valve timing but use the camshaft position sensor instead of Variable Valve Timing (VVT) sensors to determine camshaft position. See CAMSHAFT POSITION SENSOR under IGNITION SYSTEM.

ES300 & RX300

TORQUE SPECIFICATIONS (ES300 & RX300)

GS300, IS300, GS430, LS430, LX470 & SC430

TORQUE SPECIFICATIONS (GS300, IS300, GS430, LS430, LX470 & SC430)