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2008 Acura MDX 2007-09 HVAC Climate Control - MDX 8. Disconnect climate control unit connector A (40P). 9. Check for continuity between the following terminals of climate control unit connector A (40P) and the recirculation control motor 7P connector. 40P No. 18 No. 19 7P No. 1 No. 2 Fig. 130: Identifying Continuity Between Climate Control Unit A (40P) And Recirculation Control Motor 7P Connector Terminals Courtesy of AMERICAN HONDA MOTOR CO., INC. Is there continuity? YES - Go to step 10. NO - Repair open in the wire(s) between the climate control unit and the recirculation control motor. 10. Check for continuity between body ground and climate control unit connector A (40P) No. 18 and No. 19 terminals individually. Fig. 131: Identifying Continuity Between Body Ground And Climate Control Unit Connector A (40P) No. 18 And No. 19 Terminals Microsoft Saturday, May 22, 2010 11:20:31 AM Page 120 © 2006 Mitchell Repair Information Company, LLC.