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Regarding the automatic climate control system on my 93 9000CSE. The owner's manual refers to a calibration procedure which should be performed whenever the system loses power (battery removal). Can someone tell me what this calibration procedure does? Apparently it registers an error code 1 - 5 depending upon the number of errors it finds. What are the errors and what order are they logged?
 

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The number is the number of sensor faults present at the end of the test. So for example 1 means any 1 of the 4 sensors is believed faulty.
The four sensors used by ACC are internal air temp (under seatheat switches), mixed air temp (in the air duct behind the clock), sun sensor (in the centre of the dash near the windscreen on ACC2) and the outside air temp sensor (under the front bumper)
 
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