CREW AUTOMATIC FIRE EXTINGUISHING SYSTEMFIRE DETECTION TEST AND ALARMPOWER ON LAMP DOES NOT LIGHT WHEN MASTER SWITCH ISPANEL INDICATORSTURNED ON. All other electrical systems operate.(EFFECTIVE FOR VEHICLES 1 THRU 344)Before troubleshooting AFES, check the following:1 Make sure MASTER switch is set to OFF (TM 9-2350-267-10).2 Make sure crew T/A panel Maintenance switch is tinned to maintenanceposition (p 14-14.5).NOTEl Instead of using multimeter for voltage check, STE/ICE troubleshooting,INDIVIDUAL BATTERY VOLTAGE TEST-TEST 89 be performed.l Instead of using multimeter for continuity check STE/ICE troubleshooting,TEST 91 may be performed.A. Disconnect wiring harness 12351498 from crew AFES T/A panel. Place redlead of multimeter in socket B of harness 12351498 and ground black lead ofWARNINGTurn crew AFES T/A panel Maintenance switch tovertical position before disconnecting any electricalwiring harnesses. Failure to comply may result indischarge of extinguisher cylinders and injury topersonnel.multimeter. Check for 24 ± 3 vdc. Repeat procedure for socket A. If voltageis indicated in both sockets, go to step C. If voltage is not indicated in bothsockets, go to step B.2-306.9Change 4TM 9-2350-267-20
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