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Check C1, C2 & C3 At Coil Pack (Running)

Turn key off. Reconnect harness at coil pack. Set DVOM on 20-volt AC scale. Start engine, backprobe between coil terminals No. 1, 2 and 3, and chassis ground. See Figure . If any voltage reading while running is NOT 1.0-2.0 volts, go to CHECKING ICM CONTROL. If voltage reading of each coil (while running) is 1.0-2.0 volts, go to CHECKING COIL PACK.

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