Maintenance: Diagnosis Lexus GX J120

ON-VEHICLE INSPECTION

HINT

Inspect these items when the engine is cold.

Scheme 1

1. REPLACE TIMING BELT (See «REPLACEMENT»(ref-228781-S24530714052006041100000) )
2. INSPECT DRIVE BELT (See «ON-VEHICLE INSPECTION»(ref-228786-S15418984632006041100000) )
3. REPLACE SPARK PLUGS (See «IGNITION SYSTEM (2UZ-FE)»(ref-228785-S17957878842006041100000) )
4. Canada: INSPECT AIR FILTER Remove the air filter. Visually check that the air filter is not excessively damaged or oily. HINT: Oiliness may indicate that the PCV valve is stuck. If necessary, replace the air filter. Clean the filter with compressed air. First blow from the inside thoroughly, and then blow from the outside of the filter. Reinstall the air filter.
5. REPLACE AIR FILTER Replace the air filter with a new one.
6. REPLACE ENGINE OIL AND OIL FILTER (See «OIL FILTER ASSY (2UZ-FE)»(ref-228784-S41125694752006041100000) )
7. REPLACE ENGINE COOLANT (See «COOLANT (2UZ-FE)»(ref-228783-S28415290222006041100000) ) AND INSPECT RADIATOR FIN Check that the radiator and condenser are not blocked with leaves, dirt, or insets, and clean the hose connection.
8. INSPECT GASKET IN FUEL TANK CAP (See «ON-VEHICLE INSPECTION»(ref-228779-S25402601792006041100000) )
9. California, Massachusetts and New York: INSPECT CHARCOAL CANISTER (See «ON-VEHICLE INSPECTION»(ref-228779-S25402601792006041100000) )
10. INSPECT FUEL LINES AND CONNECTIONS, FUEL TANK VAPOR VENT SYSTEM HOSES AND FUEL TANK BANDS Visually check the fuel lines for cracks, leakage, loose connections, deformation or tank band looseness.
11. INSPECT EXHAUST PIPES AND MOUNTINGS Visually check the pipes, hangers and connections for severe corrosion, leaks or damage.
12. INSPECT VALVE CLEARANCE (See «VALVE CLEARANCE (2UZ-FE)»(ref-228781-S42331367672006041100000) )

Scheme 2

Scheme 3

1. INSPECT BRAKE LINE PIPES AND HOSES HINT: Check in a well-lighted area. Check the entire circumference and length of the brake hoses using a mirror as required. Turn the front wheels fully right or left before checking the front brakes. Check all the brake lines and hoses for: Damage Wear Deformation Cracks Corrosion Leaks Bends Twists Check all the clamps for tightness and connections for leakage. Check that the hoses and lines are clear of sharp edges, moving parts and the exhaust system. Check that the lines are installed in grommets pass through the center of the grommets.
2. INSPECT FRONT BRAKE PADS AND DISCS (See «OVERHAUL»(ref-228794-S21891834722006041100000) ) HINT: If a squealing or scraping noise is heard from the brakes while driving, check the pad wear indicator. If there are traces of the indicator contacting the disc rotor, the disc pad should be replaced.
3. INSPECT REAR BRAKE PADS AND DISCS (See «OVERHAUL»(ref-228794-S18737637022006041100000) )
4. INSPECT REAR BRAKE LININGS AND DRUMS (See «OVERHAUL»(ref-228795-S35611282752006041100000) )
5. INSPECT OR CHANGE BRAKE FLUID (See «BRAKE FLUID»(ref-228794-S40467260032006041100000) ) Fluid: SAE J1703 or FMVSS No. 116 DOT3

Scheme 4

1. INSPECT STEERING LINKAGE Check the steering wheel free play (See «ON-VEHICLE INSPECTION»(ref-228797-S06815007282006041100000) ). Check the steering linkage for looseness or damage. Check that the tie rod ends do not have excessive play. Check that the dust seals and boots are not damaged. Check that the boot clamps are not loose.
2. INSPECT STEERING GEAR HOUSING OIL Check the steering gear housing for oil leakage. If leakage is found, check and repair the cause.
3. INSPECT BALL JOINTS AND DUST COVERS Inspect the ball joints for excessive looseness. Check the dust cover for damage.
4. INSPECT DRIVE SHAFT BOOTS Check the drive shaft boots for clamp looseness, oil leakage or damage. Tighten bolt looseness.
5. CHECK OIL LEVEL IN TRANSFER AND DIFFERENTIAL Remove the filler plug and feel inside the hole with your finger. Check that the oil comes to within 5 mm (0.20 in.) from the bottom edge of the hole. If the level is low, add oil until it begins to run out of the filler hole, replace as necessary.
6. CHECK FLUID LEVEL IN AUTOMATIC TRANSMISSION (See «AUTOMATIC TRANSMISSION FLUID»(ref-228796-S36285364672006041100000) )
7. REPACK FRONT WHEEL BEARINGS AND DRIVE SHAFT BUSHING GREASE Change the front wheel bearing grease (See «REPLACEMENT»(ref-228792-S29565383792006041100000) ). Repack the drive shaft bushing grease (See «OVERHAUL»(ref-228792-S19362622002006041100000) ).
8. LUBRICATE PROPELLER SHAFT AND TIGHTEN BOLTS Lubricate propeller shaft, referring to the lubrication table. Before pumping in grease, wipe off any mud and dust on the grease fitting. Grease grade: Lithium base chassis grease (NLGI No. 2) Tighten the bolts for propeller shaft (See «OVERHAUL»(ref-228792-S30588076302006041100000) ).
9. ROTATE TIRES (See «WHEEL AND TIRE SYSTEM»(ref-228790-S11193813852006041100000) )

1. Canada: TIGHTEN BOLTS AND NUTS ON CHASSIS AND BODY Where necessary, tighten all the parts of the chassis. Steering system Drive train Suspension Brake system Engine mounting, etc. Where necessary, tighten all the parts of the body. Seat belts Seats Doors and hood Body mountings Fuel tank Exhaust pipe system, etc.
2. REPLACE AIR CONDITIONING FILTER Remove the glove compartment assembly. Remove the filter case by holding both sides. Remove the filter from the filter case. Replace the filter with a new one. The installation is in the reverse order of the removal.
3. BODY INSPECTION Check the body exterior for dents, scratches and rust. Check the underbody for rust and damage. If necessary, replace or repair.
4. ROAD TEST Check the engine and chassis for abnormal noises. Check that the vehicle does not wander or pull to one side. Check that the brakes work properly and do not drag. Do setting of the parking brake shoes and drum.
5. FINAL INSPECTION Check the operation of the body parts: Hood: Auxiliary catch operates properly Hood locks securely when closed Front and rear doors: Door locks operate properly Doors close properly Back door: Door lock operates properly Seats: Seat adjusts easily and locks securely in any position Front seat back locks securely in any position Folding-down rear seat backs lock securely Be sure to deliver a clean car. Especially check: Steering wheel Shift lever knob All switch knobs Door handles Seats