I have another customers car here about to be delivered and the new engine is fine..

Except, I found that the ECU had a wire clipped and bypassed.

This disturbs me greatly.

Heres the story...

On the ECU, terminal 1L (color L/W) (blue wire with the white stripe) is CLIPPED.

The wire that travels into the harness is them connected DIRECTLY to the back of the logicon.
On connector G-06
The BR wire. (brown)

The point where it connects to the logicon wire is TAPPED into it, it is not cut here like at the ECU.


- So the blue/white wire going to the ECU is cut

- The harness side of this wire is tapped into the brown wire of connector G-06 , the logical mode control switch (I) At the logicon.

The blue white wire is on page Z-30 of the 1991 FSM
connector B1-03, terminal 1L

It is supposed to go to the A/C relay from the ECU.
Like I said, this wire is cut.

the brown wire coming from the logicon goes to the:
- Thermoswitch, then the..
- Refrigerant pressure switch

...and then it goes to the ECU but to a different terminal.

On the ECU it goes to 1O (as is oscar) on the same connector as the cut wire.

so now the ECU has no connection to the A/C relay, but the logicon now does.

Everything seems to work, but WHY did they do this?!

It certainly wasnt to replace a broken wire in the harness.

Is this making sense?
here are pictures...

 

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How's the refrigerant level? Does the added wire see voltage? They may have been trying to force the compressor to cycle for some unknown reason.

People do some odd things.