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7

That's the check engine light, or CEL - if it lights up, you have a problem with the engine and should stop and investigate it. If it's blinking, count the number of flashes, as this will indicate a particular error code which can help you to determine what is wrong.


3

Back probed the VSS and the input signal at the instrument cluster. Yellow = Pin 17 (signal) at the instrument cluster Green = Pin 3 (signal) at the VSS Red = Pin 2 (ground) at the VSS That obviously doesn't look right. Pin 2 (red trace) isn't grounded. Looking at the sensor diagram it should be a 12v square wave. So where's the ground? Visual ...



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