Thanks mac drone. Here's an update:

I just made a code scanner, and I'm getting strange results. When I hook it up to pin 7 (climate control pin on my model) of the 16 pin diagnostic header, my led lights up dimly. When I press the switch, I get a single blink at regular brightness, indicating 'all ok'. I confirmed that the pin is floating at ~8.5 volts, and not at 12 as it should be. Even weirder, when I hook up to pin 7, the blower cuts out and the air recirculating indicator on the climate control console lights up.

I confirmed that the static refrigerant pressure is well above cutoff. And I do hear a relay near the fuse panel click when I connect/disconnect the cutoff pressure switch on the drier. Also, I did conform that my blinker box operates normally on the two other diagnostic pins.

I have my suspicion on the problem, but I've never troubleshot on these cars before. Any opinions? Has anyone seen something similar?

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Jay Kickliter
Chasing 'trons (my thoughts and tutorials on electronics and stuff)


1995 E300D-Black on Black