Primary/Secondary Ignition Testing 4. How many volts are there at the ICM connector pin A?
__________ volts. What
would happen if this voltage wasn’t here? _____________________________________________________________________ _____________________________________________________________________ 5. What is the function of pin B at the ICM connector? _____________________________ 6. What is the function of pin C at the ICM connector? _____________________________ 7. With the ICM connector disconnected, hook up a voltmeter (using the AC voltage function) to terminal B. Crank the engine and read the voltmeter while the engine is cranking. What is your voltmeter reading?
________ VAC
(normal reading is
1-4 VAC) 8. What does this voltage reading mean? ________________________________________ ______________________________________________________________________ 9. Turn the key off, reconnect disconnected connectors, remove voltmeter and inform your instructor that you have finished. Continue on next page
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