K ENWORTH T680 MIRRORS - SERVICE MANUAL 7. HEATERS TROUBLESHOOTING 7.1. ANALYSIS Mirror will not Heat Remove glass . See 2 Replace Carrier Glass Assembly Kit # 8,9,10 or 11 See 2 and 9 Is Voltage present at Heater connectors when switch is Yes Is the resistance of the heater No operated? See 7.2 foil too specification? See 7.3 Yes Check connection at terminals. Make sure connection is secure. No Remove the mirror from the truck. See 1 Is Voltage present at truck connector when switch is No Cab internal problem See truck fault finding operated? See 7.4 Work instructions Yes Wire Harness continuity ok?
No Replace control cable Kit # 2, 3, 4 or 5 - See 9 and 6.1 See 6.4.1 Yes Check connection at terminals. Make sure connection is secure. Copyright © Lang Mekra North America 2014 Page 20 of 28 Revised: 03/2014