Toyota Tercel 1984-1994 Repair Guide

Diagnosis and Testing

Imprimir

See Figures 1 through 9

To check that spark is occurring at the spark plugs, perform this spark test.

  1. Disconnect the spark plug wire from a spark plug.
  2.  
  3. Remove the spark plug.
  4.  
  5. Reconnect spark plug wire and ground the spark plug.
  6.  
  7. Check for spark while cranking the engine. Do not crank the engine for than 1 or 2 seconds to prevent the engine from starting. If it does start, turn it off immediately.
  8.  

If no spark occurs, continue the test as follows:

  1. Check the connections of the ignition coil, ignitor and distributor connectors.
  2.  
  3. Check the resistance of the spark plug wires.
  4.  
  5. Check the power supply to the ignition coil. Turn the ignition ON and check for battery voltage at the positive terminal of the ignition coil.
  6.  
  7. Check the ignition coil primary resistance (cold).
    1. 0.4-0.5- on all except Canada and wagon
    2.  
    3. 1.2-1.5- on Canada and wagon
    4.  

  8.  



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Fig. Fig. 1: Checking primary coil resistance



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Fig. Fig. 2: Checking secondary coil resistance

  1. Check the ignition coil secondary resistance (cold).
    1. 7.7-10.4k- on all Canada, wagons and on 1984-1986 sedans
    2.  
    3. 10.2-13.8k- on 1987-1994 U.S sedans
    4.  

  2.  
  3. Check the air gap between the pick-up coil and the signal rotor teeth as follows:
  4.  



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Fig. Fig. 3: Checking the air gap on 3A-C and 3E engines



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