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rats nest wire colors

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Old Apr 15, 2015 | 06:59 PM
  #1  
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rats nest wire colors

Long story short I cut out my rats nest to clean up the wiring but now I am in limp mode. So I have to put back the wiring but I am going to make a small resistor harness and hide it by the ecu. I am having trouble figuring the colors as my harness is crispy and some of them don't match the ecu pin out color chart. If anyone can help me fill in the blank and check over the wire colors it would be greatly appreciated.

Orange:pressure regulator-L/O
Blue:relief valve-?
Gray:switching valve-L/R
Yellow:egr-L/Y
Brown:turbo control-Y/B
White:charge control-L/B
Green:double throttle-B/R
Black:charge relief-P
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Old Apr 15, 2015 | 10:17 PM
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So regardless of the wire colors, you can always trace the wires back to the ECU connectors, if you take a look at the factory wiring diagrams you can exactly see which pin belongs to which connector.

For example: you cut off "B1-27 Secondary Air Bypass valve" and the wire is not in its original factory color because someone replaced it with a newer one, so in the wiring diagram you can see that it connects to the ECU at pin 3P, 3P is located in the bottom row and far left on the ECU connector that has a total of 16 pin slots. You locate the matching 16 pin ECU connector, you locate 3P and voila, you now exactly know that that wire belongs to B1-27!

In the wiring diagram the ECU connectors that you see are shown from the side where the wires/pins go in, and not from the side that plugs into the ECU.

Look at the image below

Hope this makes sense

EDIT: I'm pretty sure that the BLUE relief valve connector in the rats nest is B1-27
Attached Thumbnails rats nest wire colors-capture.jpg  

Last edited by Spalato; Apr 15, 2015 at 10:40 PM.
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Old Apr 16, 2015 | 10:01 PM
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Added resistors to the colored wires and grounded the other side to b/w wire and it still is in limp mode.

There are no codes blinking while running but they are stored when I jump ten/gnd. I tried to reset the ecu but they still show up.

Car idle fines but I can't rev it up as it backfires and pretty much dies.

I am borrowing a PFC this weekend hopefully it fixes it.
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