ecu pinout diagram

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Mar 21, 2012 | 07:57 PM

Mannyman6600

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ecu pinout diagram

can someone help me with the ecu pinout diagram of my 1998 GMC sonoma 4.3 please

Mar 21, 2012 | 09:19 PM

Mannyman6600

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i am sure if is ecu or pcm i need the pinout or connector wires diagram please

Mar 22, 2012 | 07:23 AM

Mike

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Not sure if these will help, but they are for my 2000 Blazer 4.3L.

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Mar 22, 2012 | 12:16 PM

Mannyman6600

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thank you this really going to help me

Mar 22, 2012 | 04:22 PM

Mannyman6600

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I check every single pin and all pins were in the same place as the chart u send me any more ideas of what could this be why I am still not getting a 5 volt reference to the tps sensor ?

Mar 22, 2012 | 04:34 PM

Mike

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Ok, hmmm. Which connector/pin are you testing for the 5V?

Mar 22, 2012 | 05:56 PM

Mannyman6600

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I am testing 12 and 27 on the clear conecctor and tha chart said I should be getting 5 volt reference

Mar 22, 2012 | 06:02 PM

jwfirebird

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how are you testing it, backprobing the wire?

Mar 22, 2012 | 06:21 PM

Mannyman6600

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I am testing them with the neg of the multimeter on battery neg and the positive of the multimeter to the gray cable that comes out of e pcm

Mar 22, 2012 | 06:32 PM

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Mike

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Don't backprobe either of those pins. Remove the entire C3-CLEAR connector and test those 2 pins again.

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