Honda Accord/Civic/Prelude 1973-1983 Repair Guide

Ignition Coil

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TESTING



1973-83

See Figure 1

  1. Turn the ignition switch OFF .
  2.  
  3. Disconnect the primary and the secondary wiring connectors from the ignition coil.
  4.  



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Fig. Fig. 1: Testing the secondary winding resistance of the ignition coil

  1. Using an ohmmeter, inspect the resistance between the primary terminals; the resistance should be 3.42-4.18- @ 70°F (1973-75), 1.35-1.65- @ 70°F (1976-78), 1.78-2.08- @ 70°F (1979-80) or 1.06-1.24- @ 70°F (1981-83). If the resistance measured does not agree with the desired reading, replace the ignition coil.
  2.  

The resistance will vary with the coil's temperature.

  1. Using an ohmmeter, inspect the resistance between the primary positive (+) terminal and the secondary wiring terminal; the resistance should be 6,400-9,600- @ 70°F (1973-75), 8,000-12,000- @ 70°F (1976-78), 8,800-13,200- @ 70°F (1979-80) or 7,400-11,000- @ 70°F (1981-83). If the measured resistance does not agree with the desired readings, replace the ignition coil.
  2.  

REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable. Turn the ignition switch OFF .
  2.  
  3. Disconnect the primary and the secondary wiring connectors from the ignition coil.
  4.  
  5. Remove the ignition coil-to-mount screws and the coil from the vehicle.
  6.  
  7. To install, reverse the removal procedures.
  8.  

 
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