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Spark Test: Turbo

  1. Remove ignition coils. See REMOVE/INSTALL/OVERHAUL article. Reconnect electrical connectors on ignition coils. Remove spark plugs. Install spark plug on each ignition coil. Ground spark plugs against cylinder block.
    CAUTION: To prevent gasoline from being injected, DO NOT crank engine for longer than 5 seconds when checking for spark.
  2. Crank engine and check for spark. If spark does not exist, check ignition coil and ignitor electrical connections. Ignitor is located in engine compartment, on top of driver's side strut tower. If electrical connections are okay, go to next step. If electrical connections are defective, repair as necessary and recheck for spark.
  3. Turn ignition on. Using voltmeter, check for battery voltage at positive terminal on ignitor and ignition coil. See appropriate wiring diagram in WIRING DIAGRAMS article. If battery voltage exists, go to next step. If battery voltage does not exist, check wiring between ignition switch, ignition coil and ignitor. See appropriate wiring diagram in WIRING DIAGRAMS article.
  4. Check ignition coil resistance. See IGNITION COIL RESISTANCE  under IGNITION CHECKS. If ignition coil resistance is within specification, go to next step. If ignition coil resistance is not within specification, replace ignition coil. See REMOVE/INSTALL/OVERHAUL article.
  5. Check resistance of camshaft position sensor. See CAMSHAFT POSITION SENSOR RESISTANCE  under IGNITION CHECKS. If camshaft position sensor resistance is within specification, go to next step. If camshaft position sensor resistance is not within specification, replace camshaft position sensor. See REMOVE/INSTALL/OVERHAUL article.
  6. Check resistance of crankshaft position sensor. See CRANKSHAFT POSITION SENSOR RESISTANCE  under IGNITION CHECKS. If crankshaft position sensor resistance is within specification, go to next step. If crankshaft position sensor resistance is not within specification, replace crankshaft position sensor. See REMOVE/INSTALL/OVERHAUL article.
  7. Check ignition IGT signal from Engine Control Module (ECM) to ignitor. If ignition IGT signal from ECM is defective, Diagnostic Trouble Code (DTC) P1300 will be set in the ECM memory to indicate an ignitor circuit malfunction. See TESTS W/CODES article for retrieving and servicing of any DTCs.
  8. If ignition IGT signal is okay, substitute another ignitor and recheck system operation. If ignition IGT signal is defective, check wiring between ECM and ignitor. ECM is located below passenger's side of instrument panel, underneath the carpet on the floor, below glove box. If wiring is defective, repair wiring as necessary and recheck system operation. If wiring is okay, substitute another ECM and recheck system operation. Reinstall components. Install and tighten spark plugs to 13 ft. lbs. (18 N.m).
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