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Self diagnostic AC Code
AC was blowing cold intermidately, then just stopped blowing cold all together. Its not the clutch relay. Ran the onboard AC self diagnostic function and came back with a code 21 which acording to the Haynes manual is Solar Sensor Circuit, what the hell is that. Also a Code 24, which is not in the Haynes manual. I pulled the conection next to where the high pressure port is thinking is a preasure issue. When I pull the plug I can hear the RPM of the motor drop. When I plug it back in I can hear the RPM increase again, but I dont hear a distinctive click of the compressor clutch engaging. Is it possible that the clutch is engaging, Im just not hearing it, which then leads me to believe I have either a low or high pressure issue, which then leads me to believe possible leak. I bought a set of manifold guages but I hate to break them out if I dont need them. Any help. 2004 Sienna XLT 105000
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Linear Mode
