Tacoma 2WD V6-3.4L (5VZ-FE) (1995)
Ignition Control Module: Testing and Inspection
PROCEDURE
NOTE: This is a test of the Ignition circuit. As there is no component test of the Igniter itself, a process of elimination is used to find if the Igniter is at
fault.
CHECK THAT SPARK OCCURS.
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Disconnect the high-tension cords from the spark plugs.
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Remove the spark plugs.
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Install the spark plugs to each high-tension cord.
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Ground the spark plug.
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Check if spark occurs while engine is being cranked.
HINT: To prevent gasoline from being injected from injectors during this test, crank the engine for no more than 1 - 2 seconds at a time.
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If the spark does not occur, perform the test indicated above.