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    Toyota Camry and Avalon 1997-2000

    Ignition Coil Pack

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    TESTING
    1MZ-FE Engine


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    Fig. Using an ohmmeter, measure the resistance between the terminals of the primary side of the ignition coil.



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    Fig. Measure the resistance between the positive terminal on the primary side of the coil and the high-tension terminal

    1. Remove the spark plug wires from the ignition coil pack that you are going to test.
    2.  
    3. Detach the primary wiring connector from the ignition coil.
    4.  
    5. Using an ohmmeter, measure the resistance between the positive and negative terminals on the primary side of the ignition coil pack. The resistance should be between 0.70-0.94 Ohms if the coil pack is cold. If hot (normal operating temperature of the engine) when tested the resistance between the terminals should be between 0.85-1.10 Ohms.
    6.  
    7. If the resistance is not within the specified range, replace the ignition coil. If the resistance is within the specified range, conduct the secondary coil resistance test.
    8.  
    9. Again using an ohmmeter, measure the resistance between the positive and the high-tension terminal. The resistance should be between 10.8-14.9 kilo-ohms when cold. If the ignition coil is hot, the resistance should be between 13.1-17.5 kilo-ohms. If the resistance is not within the specified range, replace the ignition coil.
    10.  
    11. Once all testing has been completed, reconnect the ignition coil connectors and the spark plug wires to the ignition coils.
    12.  

    5S-FE Engine


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    Fig. Use an ohmmeter to test the ignition coil secondary resistance

    1. Detach the spark wires from the ignition coil.
    2.  
    3. Using an ohmmeter, measure the resistance between the high-tension terminals. It should be between 9.7-16.7 k-ohms when the coil is cold or 12.4-19.6 k-ohms when the ignition coil is hot.
    4.  
    5. If the resistance is not within the specified values, replace the unit.
    6.  
    7. Reconnect the spark plug wires to the ignition coil.
    8.  
    9. Inspect the igniter if the ignition coil checks out ok.
    10.  

    REMOVAL & INSTALLATION
    1MZ-FE Engine


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    Fig. Remove these two 5mm screws from the V-bank cover-1MZ-FE engine



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    Fig. Lift the V-bank cover off to access the coils



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    Fig. Use a small prytool to release the spark plug wire connector from the ignition coil



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    Fig. Ignition coil bolt locations



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    Fig. The ignition coils are located on the top of the cylinder heads



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    Fig. Remove the bolts retaining the coils to the cylinder heads, one side at a time-1MZ-FE engine



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    Fig. Pull the coil out of the spark plug hole



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    Fig. Arrange the coils on a table in order-1MZ-FE engine

    1. Remove the spark plug wires from the ignition coil packs.
    2.  
    3. Detach the three (3) connectors from the ignition coil.
    4.  
    5. Remove the three (3) ignition coil mounting bolts.
    6.  
    7. Lift the three ignition coils from the cylinder head.
    8.  

    To install:

    1. Installation is the reverse of removal.
    2.  

    5S-FE engine


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    Fig. Ignition coil components-5S-FE engine



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    Fig. View of the ignition coils and intake manifold stay assembly



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    Fig. Ignition coil bolt locations



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    Fig. Toyota usually labels the ignition coils to ease the installation of the spark plug wires.



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    Fig. Be sure to re-install the ignition wire clamp in its correct position

    1. Turn the ignition key to the OFF position. Disconnect the negative battery cable. Wait at least 90 seconds from the time the negative battery was disconnected to start work.
    2.  
    3. Detach the throttle body from the intake manifold.
    4.  
    5. Disconnect the two ignition coil connectors.
    6.  
    7. Detach the wire clamp from the manifold stay assembly.
    8.  
    9. Remove the nut and three bolts from the ignition coils and manifold assembly.
    10.  
    11. Unscrew the two bolts from the ignition coil.
    12.  
    13. Remove the two ignition coils.
    14.  

    To install:


    NOTE
    The installation positions are different for the No. 1 and No. 2 coils.

    1. Install the new coil and all removed components in the reverse order of assembly.
    2.  
    3. Securely tighten the coil bracket.
    4.  
    5. Torque the ignition coil attaching bolts to 87 inch. lbs. (9.8 Nm).
    6.  
    7. Torque the ignition coil manifold stay bolts to 15 ft. lbs. (21 Nm)-bolt with a 12 mm head.
    8.  
    9. Torque the ignition coil manifold stay bolts to 31 ft. lbs. (42 Nm)-bolt with a 14 mm head.
    10.  
    11. Attach the low tension wires first, then the coil wire. Reconnect the battery cable.
    12.  
    13. Reset any various digital equipment such as radio memory and the clock if necessary.
    14.  

     
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