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Land Cruiser & LX470

  1. Remove ignition coils. See REMOVE/INSTALL/OVERHAUL article.
    CAUTION: To prevent gasoline from being injected, electrical connectors should be disconnected from fuel injectors. DO NOT crank engine for longer than 5 seconds when checking for spark.
  2. Reconnect electrical connectors on ignition coils. Remove spark plugs. Install spark plug on each ignition coil. Disconnect electrical connectors at fuel injectors to prevent gasoline from being injected. Ground spark plugs against cylinder block.
  3. Crank engine and check for spark. If spark does not exist, check electrical connection at ignition coil. If electrical connection is okay, go to next step. If electrical connection is defective, repair as necessary and recheck for spark.
  4. Install different ignition coil on spark plug and recheck for spark. If spark still does not exist, go to next step. If spark now exists with different ignition coil, replace original ignition coil. See REMOVE/INSTALL/OVERHAUL article.
  5. Turn ignition on. Using voltmeter, check for battery voltage at ignition coil positive terminal. 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 and ignition coil.
  6. 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.
  7. 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.
  8. Check ignition IGT signal from Engine Control Module (ECM) to ignition coil. If ignition IGT signal from ECM is defective, Diagnostic Trouble Code (DTC) P1300, P1305, P1310, P1315, P1320, P1325, P1330 or P1340 will be set in the ECM memory to indicate a specified ignitor circuit malfunction. See TESTS W/CODES article for retrieving and servicing of any DTCs.
  9. If ignition IGT signal is okay, substitute another ignition coil and recheck system operation. If ignition IGT signal is defective, check wiring between ECM and ignition coil. See ECM LOCATION  table. 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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