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#4 |
![]() ![]() ![]() ![]() ![]() ![]() ULTIMATEDrives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008
Location: USA, CT
Posts: 13,460
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I don't think it is completely critical. I believe that its primary purpose is to allow the AC ECU to decide when it needs to supplement the heater with the PTC (electric) heater.
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