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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Engine Controls - Basic Diagnostic Procedures - V6 & V8) >> Ignition Systems >> Spark Test >> Land Cruiser, Sequoia, Sienna & Tundra 4.7L V8

Land Cruiser, Sequoia, Sienna & Tundra 4.7L V8

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove ignition coils. See IGNITION COIL under IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article.
  2. Remove spark plugs. Install spark plug on each ignition coil. Reinstall electrical connectors on ignition coils.
    3. 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.
  3. Disconnect electrical connectors at fuel injectors. Ground spark plugs against cylinder block. Crank engine and check for spark. Spark test is based on the assumption that spark plugs are okay. If spark does not exist, go to next step. If spark exist, reinstall components. Tighten spark plugs to 13 ft. lbs. (18 N.m).
  4. Check ignition coil electrical connections. If electrical connections are okay, go to next step. If electrical connections are defective, repair as necessary and recheck for spark.
  5. 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. Reinstall components. Tighten spark plugs to 13 ft. lbs. (18 N.m).
  6. Turn ignition on. Using voltmeter, check for battery voltage at ignition coil positive terminal. See IGNITION COIL POSITIVE TERMINAL IDENTIFICATION  table. If battery voltage exists, go to next step. If battery voltage does not exist, check wiring between ignition switch and ignition coil. See WIRING DIAGRAMS article. On Sequoia, it may be necessary to check IGN No. 2 fuse, as this fuse is in wiring circuit between ignition switch and ignition coil. IGN No. 2 fuse may also be referred to as IGN2 fuse and is located in fuse block behind driver's side of instrument panel.
    IGNITION COIL POSITIVE TERMINAL IDENTIFICATION

    Application Wire Color
    Land Cruiser, Sequoia & Tundra Black/Red
    Sienna Black/White
  7. On all models, check resistance of camshaft position sensor. See CAMSHAFT POSITION SENSOR . 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 CAMSHAFT POSITION SENSOR under IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article.
  8. Check resistance of crankshaft position sensor. See CRANKSHAFT POSITION SENSOR . 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 CRANKSHAFT POSITION SENSOR under IGNITION SYSTEMS in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article.
  9. 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 ECM memory to indicate a specified ignitor circuit malfunction. DTCs P1330 and P1340 apply only to Land Cruiser, Sequoia and Tundra 4.7L V8. On all models, see TESTING PROCEDURE under SELF-DIAGNOSTIC SYSTEM in appropriate SELF-DIAGNOSTICS article for retrieving of DTCs.
  10. 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 ENGINE CONTROL MODULE LOCATION  table. See WIRING DIAGRAMS article. 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. Tighten spark plugs to 13 ft. lbs. (18 N.m).
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