ECU Wiring diagram harness?

Tiny
SALLYV
  • MEMBER
  • 2004 SATURN ION
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 216,000 MILES
I need a wiring diagram for my car for the ECU so I can figure out what is wrong and why my car is getting no spark
Monday, November 17th, 2025 AT 9:14 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
I would start by checking the crankshaft position sensor. When they go out the spark will stop. Also check the fuses. Here is the wiring diagrams for the PCM and engine and I will email them to you as well. Check out the images (below). Let us know if you need anything else.
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Tuesday, November 18th, 2025 AT 10:54 AM

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