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Land Cruiser, Sequoia, Sienna & Tundra V8

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 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 & 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 assumption that spark plugs are okay. If spark does not exist, go to next step. If spark exists, reinstall components. Tighten spark plugs to 13 ft. lbs. (18 N.m). On Sienna, tighten ignition coils to 69 INCH lbs. (8 N.m). On all other models, tighten ignition coils to 66 INCH lbs. (7.5 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). On Sienna, tighten ignition coils to 69 INCH lbs. (8 N.m). On all other models, tighten ignition coils to 66 INCH lbs. (7.5 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 appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. 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 & 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 & 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) P0351, P0352, P0353, P0354, P0355, P0356, P0357 or P0358 will be set in ECM memory to indicate a specified ignitor circuit malfunction. DTCs P0357 and P0358 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 appropriate SYSTEM WIRING DIAGRAMS article in ELECTRICAL. 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). On Sienna, tighten ignition coils to 69 INCH lbs. (8 N.m). On all other models, tighten ignition coils to 66 INCH lbs. (7.5 N.m).
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