2-306.12 Change 4
CREW AUTOMATIC FIRE EXTINGUISHING SYSTEM
FIRE DETECTION TEST AND ALARM
PANEL INDICATORS
(EFFECTIVE FOR VEHICLES 345 AND ABOVE)
TM 9-2350-267-20
POWER ON LAMP DOES NOT LIGHT WHEN MASTER SWITCH IS
TURNED ON. All other electrical systems operate.
Before troubleshooting AFES, check the following
1 Make sure MASTER switch is set to OFF (TM 9-2350-267-10).
2 Make sure crew AFES T/A panel Maintenance switch is turned to mainte-
nance position (p 14-14.5).
NOTE
l Instead of using multimeter for voltage check, STE/ICE troubleshooting,
INDIVIDUAL BATTERY VOLTAGE TEST-TEST 89 maybe performed.
l Instead of using multimeter for continuity check, STE/ICE troubleshooting,
TEST 91 maybe performed.
A.
WARNING
Turn crew AFES T/A panel Maintenance switch to
vertical position before disconnecting any electrical
wiring harnesses. Failure to comply may result in
discharge of extinguisher cylinders and injury to
personnel.
Disconnect wiring harness 12352316 from crew AFES T/A panel. Place red
lead of multimeter in socket B of harness 12352316 and ground black lead of
multimeter. Check for 24 ± 3 vdc. Repeat procedure for socket A. If voltage
is indicated in both sockets, connect wiring harness 12352316 to crew AFES
T/A panel and go to step C. If voltage is not indicated in both sockets, go to
step B.
