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here's what my Chilton's says about testing...
ignition OFF.
disconnect battery cable (I personally don't do this one for coil tests... but then I don't have a newer car)
disconnect wire harness from coil pack.
check for dirt, corrosion, damage and repair if needed
measure the primary resistance between coil pin 2 (B+) and pins 1 (coil2), 2 (coil 3), and 3 (coil 1). (this pin 2 nonsense confuses me... I'll try to find a diagram)
should be 0.3-1.0 Ohms
secondary:
measure between coil wire terminals...
coil 1: cylinder 1 and 6
coil 2: cylinder 3 and 5
coil 3: cylinder 4 and 7
coil 4: cylinder 2 and 8
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