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Home >> Mercury >> 1993 >> Sable V6-182 3.0L >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Testing and Inspection >> Component Tests and General Diagnostics >> Test 2 - Secondary Display >> Test Step 7
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Test Step 7

Ignition Secondary Pattern:






^ Spark plug firing voltage negative (pointing down).

^ Possible causes:
- Ignition coil primary circuit reversed.
- Check wiring harness for ignition coil primary circuit.
- If OK, replace ignition coil.
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