TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 346 of 1275
TM 9-2350-311 -20-1 3-3 TROUBLESHOOTING CHART — CONTINUED - u. SERVICE HEADLIGHTS, TAILLIGHT, AND STOP (1) HEADLIGHTS FAIL TO OPERATE; ALL OTHER LIGHT CIRCUIT — CONTINUED LIGHTS OPERATE — CONTINUED CONTINUED FROM STEP A B 1. Place a jumper wire from socket F (lead 15) to socket M (lead 16). 2. Turn MASTER switch ON and check headlights for operation. 3. Turn MASTER switch OFF. Do headlights operate? Replace main light switch (para 8-17). c 1. Leave jumper wire from socket F (lead 15) to socket M (lead 16). 2. Disconnect bulkhead-to-driver’s instrument panel wiring harness from dimmer switch. 3. Place red lead of muitimeter in socket G (lead 16) and black lead to ground. 4. Turn MASTER switch ON and check for voltage. 5. Turn MASTER switch OFF. Is voltage present? Repair or replace lead 16 of bulkhead-to-driver’s instrument panel wiring harness (para 8-50). CONTINUED ON NEXT PAGE 3-246