TM 10-3930-675-20-1 0006 00-6 TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED 0006 00 Table 2. Electrical Troubleshooting Procedures (Non-Error Code). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION SERVICES LIGHTS 1.   Headlight(s) Do Not Operate When Switch is Turned On. 1.  Check   position   of   blackout drive/marker light switch. Place blackout drive/marker light switch in OFF position. 2.  Ensure  that  headlight  circuit breaker  numbers  18,  19,  20, and 21 are not tripped. Reset circuit breakers as required (WP 0073 00). 3.  Ensure    that    blackout    light circuit breaker numbers 16, 24, and 25 are not tripped. Reset circuit breakers as required (see WP 0073 00). 4.  Inspect headlights for damage and burned out lamps. a.  Replace   burned   out   lamps (WP 0083 00). b.  Replace   damaged   headlight (WP 0083 00). 5.  Check headlight wiring harnesses  and  connectors  for damage, continuity, and proper voltage (WP 0199 00- 41). Repair or replace damaged wires or connectors (see WP 0111 00). 6.  Check instrument panel rocker switch for damage and continuity (WP 0199 00-41). Replace  damaged  rocker  switch (WP 0072 00). 7.  Check accessory control lever switches and wiring for damage  and  continuity  (WP 0199 00-41). Replace damaged accessory control lever unit (WP 0112 00). 2.   Headlight(s)  High/Low  Beam  Function  Not Working. 1.  Inspect headlights for damage and burned out lamps. a.  Replace   burned   out   lamps (WP 0083 00). b.  Replace   damaged   headlight (WP 0083 00). 2.  Check accessory control lever switches and wiring for damage  and  continuity  (WP 0199 00-41). Replace damaged accessory control lever unit (WP 0112 00). 3.   Front/Rear  Side  Marker  Light(s)  Do  Not Operate  When  Headlight Switch  is Turned On. 1.  Ensure     taillight    and     side marker   light   circuit   breaker numbers  22  and  23  are  not tripped. Reset circuit breakers as required (WP 0073 00).