A85669 TC CG A82935 Tester Terminal Engine Wire 14-2 -ENGINE MECHANICALENGINE(3MZ-FE) 2094Authorr:Datee: 2005 LEXUS ES330 REPAIR MANUAL (RM1124U) (c)When not using the hand-held tester or OBD II scan tool: (1)Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3. SST09843-18040 NOTICE: SMake sure of the terminal numbers before connecting them. Connecting wrong terminals can damage the engine. STurn OFF all electrical systems before connecting the terminals. SPerform this inspection after the cooling fan motor is turned OFF. (2)Remove the V-bank cover. (3)Pull out the engine wire colored by black and red as shown in the illustration. (4)Connect the tester terminal of the timing light to the engine. NOTICE: Use a timing light which detects the first signal. (5)Inspect the ignition timing at idle. Ignition timing: 8 to 12f BTDC NOTICE: When checking the ignition timing, the transmission is in the neutral position. HINT: Run the engine at 1,000 to 1,300 rpm for 5 seconds, then check that the engine speed returns to the idle speed. (6)Disconnect terminals 13 (TC) and 4 (CG) of the DLC3. (7)Inspect the ignition timing at idle. Ignition timing: 7 to 24f BTDC (8)Confirm that the ignition timing advances when the engine speed is increased. (9)Remove the timing light. 8.INSPECT ENGINE IDLE SPEED (a)Warm up the engine. (b)When using the hand-held tester or OBD II scan tool: (1)Connect the hand-held tester or OBD II scan tool to the DLC3. (2)Enter DATA LIST MODE on the hand-held tester or OBD II scan tool. Idle speed: 630 to 730 rpm NOTICE: SWhen checking the idle speed, the transmission is in the neutral position. SCheck the idle speed with the cooling fan OFF. SSwitch OFF all accessories and air conditioning before connecting the hand-held tester or OBD II scan tool. HINT: Refer to the hand-held tester or OBD II scan tool operator’s manual for further details. ffYDeùííím^l}fí”W[ shenduauto/ [gQQQ1398556747 u5íí18218750259 P19471 Compression Gauge -ENGINE MECHANICALENGINE(3MZ-FE) 14-3 2095Authorr:Datee: 2005 LEXUS ES330 REPAIR MANUAL (RM1124U) 9.INSPECT COMPRESSION (a)Warm up and stop the engine. (b)Remove the intake air surge tank (see page 11-13). (c)Disconnect the injector connectors. (d)Remove the ignition coils. (e)Remove the spark plugs. (f)Inspect the cylinder compression pressure. (1)Insert a compression gauge into the spark plug hole. SST09992-00500 (2)Fully open the throttle. (3)While cranking the engine, measure the compres- sion pressure. Compression pressure:1.5 MPa (15.3 kgf/cm2, 218 psi) Minimum pressure:1.0 MPa (10.2 kgf/cm2, 145 psi) Difference between each cylinder:100 kPa (1.0 kgf/cm2, 15 psi) NOTICE: SAlways use a fully-charged battery to obtain engine speed of 250 rpm or more. SCheck the other cylinder’s compression pressure in the same way. SThis measurement must be done as quickly as pos- sible. (4)If the cylinder compression is low, pour a small amount of engine oil into the cylinder through the spark plug hole, then inspect again. HINT: SIf adding oil increases the compression, the piston rings and/or cylinder bore may be worn or damaged. SIf pressure stays low, the valve may be sticking or seated improperly, or there may be leakage past the gasket. 10.INSPECT CO/HC HINT: The ECM properly controls the CO/HC concentration in the emission gas. (a)Start the engine. (b)Run the engine at 2,500 rpm for approximately 180 seconds. (c)Insert the CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling. (d)Check the CO/HC concentration at idle and/or at 2,500 rpm. HINT: When doing the 2 mode (with the engine is at idle and at 2,500 rpm) tests, these measuring order are pre- scribed by the applicable local regulations. If the CO/HC concentration does not comply with the regulations, troubleshoot in the order given below. (1)Check the heated oxygen sensor operation (see page 05-126). ffYDeùííím^l}fí”W[ shenduauto/ [gQQQ1398556747 u5íí18218750259 14-4 -ENGINE MECHANICALENGINE(3MZ-FE) 2096Authorr:Datee: 2005 LEXUS ES330 REPAIR MANUAL (RM1124U) (2)See the table below for possible causes, then inspect the applicable causes and repair them if necessary. COHCProblemsCauses NormalHighRough idle 5.Faulty ignitions: SIncorrect timing SFouled, shorted or improperly gapped plugs 6.Incorrect valve clearance 7.Leaks in intake and exhaust valves 8.Leaks in cylinders LowHighRough idle(Fluctuating HC reading) 1.Vacuum leaks: SPCV hoses SIntake manifold SThrottle body SBrake booster line 2.Lean mixture causing misfire HighHighRough idle(Black smoke from exhaust) 1.Restricted air filter 2.Plugged PCV valve 3.Faulty SFI systems: SFaulty pressure regulator SDefective engine coolant temperature sensor SDefective mass air flow meter SFaulty ECM SFaulty injectors SFaulty throttle body ffYDeùííím^l}fí”W[ shenduauto/ [gQQQ1398556747 u5íí18218750259 14193-03 A78698 B A C A78699 A B A78699 A B A78698 B A C -ENGINE MECHANICALDRIVE BELT(3MZ-FE) 14-5 2097Authorr:Datee: 2005 LEXUS ES330 REPAIR MANUAL (RM1124U) DRIVE BELT(3MZ-FE) REPLACEMENT 1.REMOVE FRONT WHEEL RH 2.REMOVE FRONT FENDER APRON SEAL RH 3.REMOVE V (COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO.1 (a)Loosen bolts A and B. (b)Loosen the adjusting bolt C, then remove the V-ribbed belt. 4.REMOVE VANE PUMP V BELT (a)Loosen bolts A and B, then remove the V-ribbed belt. 5.INSTALL VANE PUMP V BELT (a)Install the V-ribbed belt on each pulley. (b)Using a bar, adjust the V-ribbed belt tension, then tighten bolt B. Torque: 43 Nm (439 kgfcm, 32 ftlbf) (c)Tighten bolt A. Torque: 43 Nm (439 kgfcm, 32 ftlbf) 6.INSTALL V (COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO.1 (a)Install the V-ribbed belt on each pulley. (b)Tighten the adjusting bolt C, then adjust the V-ribbed belt tension. (c)First tighten bolt A, then tighten bolt B. Torque: 18 Nm (178 kgfcm, 13 ftlbf) for bolt A 58 Nm (591 kgfcm, 43 ftlbf) for bolt B ffYDeùííím^l}fí”W[ shenduauto/ [gQQQ1398556747 u5íí18218750259 。。。。。。