THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ON THE STEP TO DIAGNOSE AND REPAIR VEHICLES THAT MAY HAVE AIR CONDITIONING MAY NOT COOL OR MAY BLOW HOT AIR, DRIVER INFORMATION CENTER MESSAGES, INSTRUMENT PANEL CLUSTER MALFUNCTION INDICATOR LAMP ON, ERRATIC OR FLUCTUATING ENGINE OIL PRESSURE GAUGE, ENGINE CRANK NO START, AND ENGINE MISFIRE. TECHNICIAN WILL INSPECT THE ENGINE WIRE HARNESS FOR CHAFFING AND DAMAGE. IF WIRES ARE FOUND DAMAGED REPAIR AND REROUTE THE WIRE HARNESS TO PREVENT THE CONCERN.