IG–19 IGNITION SYSTEM – 2JZ–GTE (2JZ–GTE)

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IG–19IGNITION SYSTEM–2JZ–GTE(2JZ–GTE)PRECAUTION1.With a tachometer connected to the system, connect thetester probe of the tachometer to terminal IG of theDLC1.2.With a timing light connected to the system, connect thetester probe to the green wire of the igniter3.As some tachometers are not compatible with thisignition system, we recommend that you confirm thecompatibility of your unit before use.Never allow the tachometer terminals to touch ground asit could result in damage to the igniter and/or ignitioncoil.Do not disconnect the battery while the engine isrunning.Check that the igniter is properly grounded to the body.4.5.6.

IG–20IGNITION SYSTEM–2JZ–GTEPREPARATIONSST(SPECIAL SERVICE TOOLS)09240–00020Wire Gauge SetRECOMMENDED TOOLS09082–00050TOYOTA Electrical Tester Set 09200–00010Engine Adjust Kit �ÑÑÑÑÑÑÑÑÑÑÑÑÑÑMegger insulation resistance meterSpark plug cleanerThermometerSpark plug

IG–21IGNITION SYSTEM–2JZ–GTEON–VEHICLE INSPECTIONSPARK TESTCHECK THAT SPARK OCCURS(a) Remove the ignition coil. (See ignition coil removal)(b) Remove the spark plug.(c) Install the spark plug to the ignition coil, and connect theignition coil connecter.(d) Ground the spark plug.(e) Check if spark occurs while engine is being cranked.HINT: To prevent gasoline from being injected from injectorsduring this test, crank the engine for no more than 1–2 seconds at time.If the spark does not occur, do the test as follows:SPARK TESTCHECK CONNECTION OF IGNITION COIL, IGNITERConnect securely.CHECK POWER SUPPLY TO IGNITION COIL ANDIGNITERCheck wiring between ignition switchto ignition coil and igniter.CHECK RESISTANCE OF IGNITION COIL(See page IG–23)Replace the ignition coil.1.2.Turn ignition switch to ON.Check that there is battery voltage atignition coil positive ( ) terminal.Resistance:PrimaryCold0.54 – 0.84 Hot0.68 – 0.98 CHECK RESISTANCE OF CAMSHAFT ANDCRANKSHAFT POSITION SENSOR(See page IG–24)Resistance:NIPPONDENSOAISANCold835 – 1,400 985 – 1,600 CHECK IGT SIGNAL FROM ECM(See page EG–519)Replace the camshaft and crankshaft positionsensor.Hot1,060 – 1,645 1,265 – 1,890 Check wiring between ECM,and igniter, andthen try another ECM.TRY ANOTHER IGNITERADJUST IGNITION TIMING(See ignition timing inspection and adjustment)

IG–22IGNITION SYSTEM–(2JZ–GTE)SPARK PLUGS INSPECTIONNOTICE: Never use a wire brush for cleaning. Never attempt to adjust the electrode gap on used a sparkplug. Spark plugs should be replaced every 100,000 km (60,000miles).1.REMOVE IGNITION COILS ASSEMBLIES(See ignition coils removal)2.INSPECT ELECTRODEUsing a megger (insulation resistance meter), measure theinsulation resistance.Standard correct insulation resistance:10 M or moreIf the resistance is less than specified, proceed to step 4.HINT: If a megger is not available, the following simple method of inspection provides fairly accurate results.Simple Method:(a) Quickly race the engine 5 times to 4,000 rpm.(b) Remove the spark plug.(c) Visually check the spark plug.If the electrode is dry.OKIf the electrode is wet.Proceed to step 4(d) Reinstall the spark plug.3. REMOVE SPARK PLUGS4.VISUALLY INSPECT SPARK PLUGSCheck the spark plug for thread damage and insulator damage.If abnormal, replace the spark plug.Recommended spark plug:NDPK20R11NGKBKR6EP115.INSPECT ELECTRODE GAPMaximum electrode gap for used spark plug:1.3 mm (0.051 in.)Correct electrode gap for new spark plug:1.1 mm (0.043 in.)NOTICE: If adjusting the gap of a new spark plug, bend onlythe base of the ground electrode. Do not touch the tip. Neverattempt to adjust the gap on the used plug.

IG–23IGNITION SYSTEM6.–(2JZ–GTE)CLEAN SPARK PLUGSIf the electrode has traces of wet carbon, allow it to dry andthen clean with a spark plug cleaner.Air pressure:Below 588 kPa (6 kgf/cm2, 85 psi)Duration:20 seconds or less7.HINT: If there are traces of oil, remove it with gasoline beforeusing the spark plug cleaner.REINSTALL SPARK PLUGSTorque: 18 N m (180 kgf cm, 13 ft lbf)8.REINSTALL IGNITION COILS ASSEMBLIES(See ignition coils installation)IGNITION COIL INSPECTIONNOTICE: ”Cold” and ”Hot” in the following sentences expressthe temperature of the coils themselves. ”Cold” is from –10 C(14 F) to 50 C (122 F) and ”Hot” is from 50 C (122 F) to 100 C(212 F).1.2.REMOVE NO.3 TIMING BELT COVERDISCONNECT IGNITION COIL CONNECTORS3.INSPECT PRIMARY COIL RESISTANCEUsing an ohmmeter, measure the resistance between thepositive ( ) and negative (–) terminals.Primary coil resistance:Cold0.54 – 0.84 Hot0.68 – 0.98 4.5.If the resistance is not as specified, replace the ignition coil.RECONNECT IGNITION COIL CONNECTORSREINSTALL NO.3 TIMING BELT COVER

IG–24IGNITION SYSTEM–(2JZ–GTE)CAMSHAFT POSITION SENSORSINSPECTIONNOTICE: ”Cold” and ”Hot” in the following sentences expressthe temperature of the sensors themselves. ”Cold” is from–10 C (14 F) to 50 C (122 F) and ”Hot” is from 50 C (122 F) to100 C (212 NSPECT CAMSHAFT POSITION SENSOR RESISTANCEUsing an ohmmeter, measure the resistance between terminals.Resistance:ColdNIPPONDENSO835–1,400 AISAN985–1,600 HotNIPPONDENSO1,060–1,645 AISAN1,265–1,890 3.If the resistance is not as specified, replace the camshaftposition sensor.RECONNECT CAMSHAFT POSITION SENSORCONNECTORS

IG–25IGNITION SYSTEM–(2JZ–GTE)CRANKSHAFT POSITION SENSORINSPECTIONNOTICE: ”Cold” and ”Hot” in the following sentences expressthe temperature of the sensors themselves. ”Cold” is from–10 C (14 F) to 50 C (122 F) and ”Hot” is from 50 C (122 F) to100 C (212 F).1.2.3.REMOVE NO.2 AIR TUBE FOR CACDISCONNECT CRANKSHAFT POSITION SENSORCONNECTORINSPECT CRANKSHAFT POSITION SENSORRESISTANCEUsing an ohmmeter, measure the resistance between terminals.Resistance:ColdNIPPONDENSO835–1,400 AISAN985–1,600 HotNIPPONDENSO1,060–1,645 AISAN1,265–1,890 4.5.If the resistance is not as specified, replace the crankshaftposition sensor.RECONNECT CRANKSHAFT POSITION SENSORCONNECTORREINSTALL NO.2 AIR TUBE FOR CACIGNITER INSPECTION(See procedure Spark Test on page IG–22)

IG–26IGNITION SYSTEM–2JZ–GTEIGNITION COILCOMPONENTS FOR REMOVAL ANDINSTALLATIONIGNITION COILS REMOVALInstallation is in the reverse order of removal.1. REMOVE NO.3 TIMING BELT COVER(a) Remove the oil filler cap.(b) Using a 5 mm hexagon wrench, remove the 10 bolts, beltcover and gasket.2.REMOVE PCV HOSESRemove the 2 PCV hoses.3. DISCONNECT IGNITION COIL CONNECTORS(a) Disconnect the engine wire from the 6 clamps on the ignitioncoils.(b) Disconnect the 6 ignition coil connectors.

IG–27IGNITION SYSTEM4.–(2JZ–GTE)REMOVE BRACKET IGNITION COILS ASSEMBLIESRemove the 2 bolts and 2 ignition coils assembly.Torque:Bracket to cylinder head cover8.8 N m (90 kgf cm, 78 in. lbf)5. REMOVE IGNITION COILS FROM BRACKET(a) Remove the rubber boot from the ignition coil.(b) Remove the 2 screws and ignition coil.

IG–28IGNITION SYSTEM–2JZ–GTECAMSHAFT POSITION SENSORCOMPONENTS FOR REMOVAL ANDINSTALLATIONCAMSHAFT POSITION SENSORREMOVAL1.2.3.Installation is in the reverse order of removal.DISCONNECT IAC VALVE CONNECTORDISCONNECT AIR HOSE FROM IAC VALVEREMOVE ENGINE HANGERRemove the 2 bolts, ground strap and engine hanger.Torque: 39 N m (400 kgf cm, 29 ft lbf)4.DISCONNECTCONNEC

(d) Reinstall the spark plug. 3. REMOVE SPARK PLUGS 4. VISUALLY INSPECT SPARK PLUGS Check the spark plug for thread damage and insulator dam-age. If abnormal, replace the spark plug. Recommended spark plug: ND PK20R11 NGK BKR6EP11 5. INSPECT ELECTRODE GAP Maximum electrode gap for used spark plug

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