Ignition Coil Primary Circuit Switching Check

Insert a small straight pin in wire to ignition coil negative terminal about 1" from ignition module connector. Attach test light between straight pin and engine ground.
Crank engine. Remove test light. Remove straight pin from wire. See Fig 1. After test is completed, apply small amount of silicone sealer to repair pin holed in wire.

Fig 1: Testing Ignition Coil Primary Circuit Switching After test is completed, apply small amount of silicone sealer to repair pin hole in wire.
If test light flashes, proceed to IGNITION COIL PRIMARY RESISTANCE CHECK . If test light comes on but does not flash, proceed to WIRING HARNESS CHECK . If test light does not come on at all, or is very dim, proceed to PRIMARY CIRCUIT CONTINUITY CHECK.