1529 DT CHECK FOUND CAR WARM. ~~~~~ 1529 DT CHECK FOUND CAR WARM. A/CON 1 & A/CON 2 U BLE TO CUT IN.  1529 TIMs shows A/C 1 & 2 COMMs Fault. Swapped 1529 MCU1 to 3529 - Fault transfered. Replaced both fgaulty MCU. Function test A/C operation for Cut In/Out - OK. Fault did not reccur. Kwa ZY 44768