IG-21 IGNITION SYSTEM — 2JZ-GTE ON–VEHICLE INSPECTION SPARK TEST CHECK 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 the ignition 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 injectors during 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 TEST ↓ NO CHECK CONNECTION OF IGNITION COIL, IGNITER ↓ OK BAD → Connect securely. CHECK POWER SUPPLY TO IGNITION COIL AND IGNITER 1. Turn ignition switch to ON. 2. Check that there is battery voltage at ignition coil positive (+) terminal. ↓ OK BAD → Check wiring between ignition switch to ignition coil and igniter. CHECK RESISTANCE OF IGNITION COIL (See page IG–23) Resistance: Cold Hot Primary 0.54 – 0.84 Ω 0.68 – 0.98 Ω ↓ OK BAD → Replace the ignition coil. CHECK RESISTANCE OF CAMSHAFT AND CRANKSHAFT POSITION SENSOR (See page IG–24) Resistance: Cold Hot NIPPONDENSO 835 – 1,400 Ω 1,060 – 1,645 Ω AISAN 985 – 1,600 Ω 1,265 – 1,890 Ω ↓ OK BAD → Replace the camshaft and crankshaft position sensor. CHECK IGT SIGNAL FROM ECM (See page EG–519) ↓ OK BAD → Check wiring between ECM, and igniter, and then try another ECM. TRY ANOTHER IGNITER ADJUST IGNITION TIMING (See ignition timing inspection and adjustment)