Mazda Trucks 1987-1993 Repair Guide

Ignition Coil

Imprimir

TESTING



See Figures 1, 2, 3 and 4

  1. Connect an ohmmeter across the coil primary terminals and check resistance on the low scale. Resistance (@ 68°F; 20°C) should be:
  2.  

Pickups:


1987-89 B2200 carbureted: 1.0-1.3 ohms
 
1990-93 B2200 injected: 0.81-0.99 ohms
 
1987-88 B2600: 1.0-1.3 ohms
 
1989 B2600i; Point 1: 0.77-0.95 ohms ; Point 2: 0.9-1.1k ohms
 
1990-93 B2600i: 0.81-0.99 ohms
 



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Fig. Fig. 1: Ignition coil primary resistance test-2.2L carbureted engine (left), 2.6L fuel injected engine (right)



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Fig. Fig. 2: Checking the primary ignition coil reesistance-3.0L engine

MPV


2.6L engine; Point 1: 0.77-0.95 ohms ; Point 2: 0.9-1.1k ohms
 
1989-91 3.0L engine: 0.81-0.99 ohms
 
1992-93 3.0L engine: 0.72-0.88 ohms
 

  1. If resistance is much higher, replace the coil.
  2.  
  3. Check the coil secondary resistance.Connect an ohmmeter across the distributor side of the coil and the coil center tower. Read resistance on the high scale. Resistance at 68°F; 20°C) should be:
  4.  

Pickups



1987-88 B2200: 6-30k ohms
 
1987-88 B2600: 10-20k ohms
 
1989-93 B2200 and B2600i: 6-30k ohms
 



Click image to see an enlarged view