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Diagnostic plugs turning my radiator fan on.


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1990 subaru legacy "L" - 2.2 Ltr. multipoint fuel injection- manual transmission.

 

Ok so im having a few issues with my subaru currently so I thought I would plug the two green wires under the dash in hopes I would get some sort of code from my Check engine light.

 

Instead my check engine light dimmed, and my radiator fans would turn on and off every second. I counted 30 times that it turned on and off. During this time there were no changes in Dynamics or Temp.

 

Any help would be greatly appreciated.

 

Thanks.

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It's normal for the radiator fans to cycle with the d-check connectors (green) plugged together. That just indicates you are in d-check mode. You have to use the white (or black) connectors to read stored codes. You have it in test mode - that is a different procedure designed to uncover faults that are not found in the normal test routines the ECU goes through.

 

GD

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It's normal for the radiator fans to cycle with the d-check connectors (green) plugged together. That just indicates you are in d-check mode. You have to use the white (or black) connectors to read stored codes. You have it in test mode - that is a different procedure designed to uncover faults that are not found in the normal test routines the ECU goes through.

 

GD

 

You know too much of these things... why? :headbang:

 

But seriously you seem to really know alot about subarus... do you work for a dealership or something?

 

thank you.

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