Does anyone have any info on the climate control programming. Do I need a computor or some other gizmo to do this. If I should find a used one will it need to be reprogrammed when I install it in my car? Anyone have a tempoary fix so I can get some heat out of the heater. everything works except the tempeture regulation part of the system.
Does anyone have a technical manual for this componet?
1. Recalibrate the system by press and releasing the 'AUTO' and vent buttons simultaneously. Depending on which ACC you have, it will display error codes or the number of error codes the system finds. You'd like to see '00'. Once the temp display comes back, it's done. The ACC uses stepper motors to control the air distribution and blend door but needs the calibration to figure out which position it is in. You also need to do this every time the battery is disconnected. Search the site for 'ACC calibration'.
2. If everything works but the heat, you may have a broken blend door arm and/or shaft. There is a dealer kit for the arm, but if it needs the door replaced, you're in for a lot more work.
could also be the cabin temp sensor...
This is the thing that sits behind the bulls-eye looking thing in the dash directly behind the steering wheel to the right. If this sensor is dirty or dead, it will wreak havoc with the ACC system. I was not able to get heat unless the system was set to HI, and it was due to a faulty cabin temp sensor.
My experience has been that when your Saab has a malfunctioning interior air sensor (the "bullseye" near your seat heater switches), the system will default to "warm" or "hot." I like to think this is a failsafe designed in by the Saab engineers who reasoned that flash-frozen Swedish Saab owners tend to have a lower than average brand loyalty once you thaw them out.
So, if you're getting cool or cold air, that suggests that the arm to the mixer flap, or the flap itself, has broken. However, you might be lucky and it's just that the actuator cable has slipped off the arm.
To find out, remove the aquarium cover and from the right side of the car, peer downwards toward the middle of the aquarium, on the back side under the windshield, to the left of the evaporator box*. There you will see a white plastic cable (or its remnants) and a cable which should be affixed to the end. If the arm is broken, as Wally notes Saab sells a repair kit. You would need to have a little bit left on the arm in order for this kit to work, or else you'd have to go through the steps of heater core replacement in order to remove and replace the mixer flap assembly.
* right and left are based on sitting in the car looking out the windshield. Your right is the car's right.
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