Toyota Pick-ups, Land Cruiser, and 4 Runner 1997-00

Ignition Coil

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TESTING



All of the coil testing procedures have Cold and Hot specifications. This is the temperature of the coils themselves. Cold is from 14122°F (-1050°C) and Hot is from 122212°F (50100°C).

1FZ-FE and 2RZ-FE Engines

The 1FZ-FE and early 2RZ-FE engines use a conventional electronic ignition distributor.



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Fig. Checking the coil's primary circuit resistance (top) and secondary resistance (bottom)1FZ-FE engine



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Fig. Checking the coil's primary circuit resistance (top) and secondary resistance (bottom)2RZ-FE Engine

  1. With the ignition switch OFF , carefully remove the high-tension cable (coil-to-distributor wire) from the coil.
  2.  
  3. Carefully unplug the smaller electrical connector from the coil.
  4.  
  5. Using an ohmmeter, measure the primary coil resistance between the positive (+) and negative () terminals. The readings should be:
    1. Cold: 0.360.55 ohms
    2.  
    3. Hot: 0.450.65 ohms
    4.  

  6.  
  7. Using an ohmmeter, measure the secondary coil resistance between the positive (+) and high-tension terminals. The readings should be:
    1. Cold: 9.015.4 k-ohms
    2.  
    3. Hot: 11.418.1 k-ohms
    4.  

  8.  
  9. If the resistance is not as specified, replace the ignition coil.
  10.  

REMOVAL & INSTALLATION



External Mount
  1. Disconnect the negative battery cable.
  2.  
  3. If equipped, remove the ignition coil cover.
  4.  
  5. Remove the coil wire lead.
  6.  



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Fig. Remove the cover from the ignition coil



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Fig. Detach the coil wire from the unit



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Fig. Unplug the connector and remove the igniter

  1. Tag and disconnect all electrical leads from the coil. If applicable, remove the igniter.
  2.  
  3. Remove the two mounting bolts and lift off the ignition coil.
  4.  



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Fig. Loosen and remove the mounting bolts securing the coil



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Fig. Once all leads and bolts are removed, lift the ignition coil from the fender well

To install:

  1. Install the coil in position and tighten the mounting bolts.
  2.  
  3. Connect all wires and install the igniter.
  4.  
  5. Connect the negative battery cable.
  6.  

Internally Mounted
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the distributor cap and rotor.
  4.  
  5. Remove the ignition coil dust cover and dust proof packing.
  6.  
  7. Unfasten the two nuts and disconnect the three ignition coil terminals.
  8.  



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Fig. Exploded view of the internally mounted ignition coil distributor1997 2RZ-FE engine shown

  1. Remove the ignition coil retaining screws and the coil from the distributor.
  2.  

To install:

  1. Before installing, remove any old sealing material from the ignition coil. Apply sealer, such as Formed-In-Place-Gasket (or equivalent), to the coil-mounting surface.
  2.  
  3. Install the ignition coil to the distributor with the four screws.
  4.  

When connecting the wires for the ignition coil, be sure the wires do NOT contact with the signal rotor or distributor housing.

  1. Connect the ignition coil wires and install the two nuts.
  2.  
  3. Install the dust proof packing and dust cover.
  4.  
  5. Install the rotor and distributor cap.
  6.  
  7. Connect the negative battery cable.
  8.  

 
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