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Openai/69540633-2650-8006-9f7f-3526b70a3503
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===== - If you have 12 V at the coil but no spark, you’re chasing: - ECU not pulling the control wire to ground - Missing crank signal - ECU inhibited by a safety input - ECU power/ground issue ===== * If one cylinder has spark and the other doesn’t: - Swap coils side to side - Check ECU driver for that cylinder - Scope the control wire (should see a square-ish pull-to-ground event) If you want, tell me: * Are you missing spark on one cylinder or both? * Crank/no-start or runs then dies? I can walk you straight through the fastest test path.
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