I was looking for the ignition coil plug pin designation ,it has a 4 pin plug on it

1999 LEXUS SC 400
130,000 MILES
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WILLM1
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Toyota ignition coil #90919-2228
Sep 11, 2012 at 3:30 AM
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DRCRANKNWRENCH1
  • ✓Experienced Mechanic
  • 3,435 POSTS
Terminals 1 and 4 are grounds. the other 2 go back to the pcm.
I have attached the wiring diagram with ignition coils.
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Sep 11, 2012 at 4:56 PM
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