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Discussion Starter · #1 ·
Does anyone know where the exterior air temp sensor lives on a '92 9000 with ACC2?

Mine went from 32 def F to 119 deg F in individual degrees over 25 miles yesterday, and now is stuck @ 119.

I assume the sensor has died, and now the ACC is desparate to cool the world. Just as well there is no R12 in the system.

Andrew
 

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For ACC2 the exterior air sensor is under the front bumper and provides an analogue signal to the EDU, which then converts this to a digital signal and passes it onto the ACC.
For ACC1 it is completlely separate from the EDU and is mounted under the false bulkhead in the air inlet.
 

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Discussion Starter · #6 ·
ACC1 has auto and econ
ACC2 has auto econ and off.

Found the sensor on the carlsson, behind the nearside driving lamp, where it had fallen out of its holder some time in the past.

Couldn't get it off the connector, so just replaced it in the bracket beside the spoiler air intake beside the ns Driving lamp.

Still read 119 deg F though but sensor looks externally OK.
 
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