IG-4 IGNITION SYSTEM – 2JZ–GE ON–VEHICLE INSPECTION SPARK TEST CHECK THAT SPARK OCCURS (a) Disconnect the high–tension cord (from the ignition coil) from the distributor cap. (b) Hold the end approx. 12.5 mm (0.50 in.) from the body ground. (c) See 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 AND DISTRIBUTOR CONNECTOR ↓ OK CHECK RESISTANCE OF HIGH–TENSION CORD (See page IG–5) Maximum resistance: 25 kΩ per cord ↓ OK 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 CHECK RESISTANCE OF IGNITION COIL (See page IG–7) Resistance: Cold Hot Primary 0.21 – 0.33 Ω 0.27 – 0.39 Ω Secondary 6.4 – 11.1 kΩ 8.2 – 13.0 kΩ ↓ OK CHECK RESISTANCE OF SIGNAL GENERATOR (PICKUP COIL)(See page IG–8) Resistance: Cold Hot G1 and G ⊖ 125 – 200 Ω 160 – 235 Ω G2 and G ⊖ 125 – 200 Ω 160 – 235 Ω NE and G ⊖ 155 – 250 Ω 190 – 290 Ω ↓ OK CHECK AIR GAP OF DISTRIBUTOR (See page IG–8) Air gap: 0.2 – 0.5 mm (0.008 – 0.020 in.) ↓ OK CHECK IGT SIGNAL FROM ECM (See page EG–413) ↓ OK TRY ANOTHER IGNITER BAD → Connect securely. BAD → Replace the cord(s). BAD → Check wiring between ignition switch to ignition coil and igniter. BAD → Replace the ignition coil. BAD → Replace the distributor housing assembly. BAD → Replace the distributor housing assembly. BAD → Check wiring between ECM, distributor and igniter, and then try another ECM. P12368