DETAILED TROUBLESHOOTING PROCEDURE T SUPPORT SYSTEM - VEHICLE LIGHTING (Continued)

TM 5-5420-226-20-1 Symptom-67 DETAILED TROUBLESHOOTING PROCEDURE SUPPORT SYSTEM - VEHICLE LIGHTING (Continued) #check foot DIMMER SWITCH for continuity from contact E to contact G in both switch positions. Second Technician (Operator’s Station) Connec~ red probe of meter to contact G (CKT 16) of foot DIMMER SWITCH. ,Comtect black probe of meter to contact E (CKT 18) of foot DIMMER SWITCH. Check if meter indicates continuity. Press and release foot DIMMER SWITCH. Check if meter indicates continuity. Does meter indicate continuity in one switch position only? ‘e l l Q Inspect front accessory harness (CKT 17 for high beam or CKT 18 for low beam) for bent/broken connector contacts or loose CKT 17/18 wire at rear of connectors. Repair connectors if defective (page 10-298). If connectors are not defective, notify support maintenance of a defective front accessory harness. Install foot DIMMER SWITCH (page 10-170). FOOT t= E l-k DIMMER SWITCH F ‘7- 0^YES ( 0NO 0 -n n+ o (CKT 16) Replace foot DIMMER SWITCH (page 10-169). L J k TA107343 4-654