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Home >> Geo >> 1992 >> Prizm LSi, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> Ignition Coil Power Source (Prizm GSi)
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Ignition Coil Power Source (Prizm GSi)

Turn ignition on. Using voltmeter, check voltage between positive terminal of ignition coil (Black/Orange wire) and ground. If battery voltage does not exist, check for open circuit in Black/Orange wire between ignition coil and ignition switch.