1994 Saturn SL1 no injector Pulse

  • 1994 SATURN SL1
Electrical problem
1994 Saturn SL1 4 cyl Two Wheel Drive Manual

I tried to reply to Louie Saturntech9 but my computer skills suck. Maybe it has been too long? So I used a paper clip instead of a wire and got a code 12 (good lesson there). Ran engine with spray bottle for several minutes and still have code 12. Noid does not work at injector. Do I need to disconnect battery and use paper clip at ecu to check wire to injector. What I was told should be blue is light green( I'm almost positive) and that would be the pulsing side to the injector. Does it for sure go straight to the ecu? Where? Could not read diagram sent to me by louie(could not tell where to check on ecu) and the color problem or am I color blind?Do I need the exact numbers on the ecu as one guy told me and said "good luck finding one"?Hope all this makes sense to you THANKS KD58. Did not pay yet but will
Do you
have the same problem?
Friday, October 15th, 2010 AT 9:22 AM

1 Reply



It's a straight run from the injector to the pcm and it's a light blue goes to the J1 connector of the pcm which is a brown connector terminal D13.I emailed you a pin out for that connector so you can check to see if that wire is good from the injector to the pcm it should read 2 ohm's or less from the injector to the pcm connector J1 terminal D13.As far as the computer goes it's a one year 1994 only all the single over head cam engine car's have the same part number.If you find it's the computer you could probably find one on ebay.
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Friday, October 15th, 2010 AT 11:39 AM

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