Resolved 420A A/C ECM location?

exitreality1 · Jul 16, 2008

My auto compressor ECM is shot so my HVAC doesn't work. I bought a replacement from a guy but it turned to be the turn signal relay.

I can see from the wiring diagrams that it's back behind the glove box area, but I don't really know what I'm looking for. How do you get to the thing and what does it look like?

A part number would help too if anyone has it handy.

Defiant · Jul 17, 2008

http://www.dsmtuners.com/forums/problem-diagnosis/269945-c-control-unit-ecu-ac-ac-ac-ac-ac-ac.html

MR227707

The part number will do you no good.

waltah · May 10, 2026

The A/C compressor controller in the GST/GSX and probably some other cars is a flat black box roughly the size of a pack of cigarettes. It's screwed to the bottom of the blower, behind the glove box. You can see it looking up from the passenger footwell, the label says 'AUTO COMP CONTROLLER.' Likely part numbers are MB946485 and MR227707 but others are possible. eBay is now your best source -- search for those two and confirm that the seller knows what he's got by confirming the right number is on the label in the picture.

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Resolved 420A A/C ECM location?

exitreality1

Defiant

waltah

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