Before troubleshooting AFES, check the following:
1 Make sure MASTER switch is set to OFF (TM 9-2350-267-10).
2 Make sure engine AFES T/A panel Maintenance switch is turned to mainte-
nance position (p 14-14.3).
3 AFES fire extinguisher bottle harnesses are disconnected (p 14-50.5).
NOTE
. 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 Make sure the green POWER ON lamp is off, indicating the power has been
removed from the AFES. Connect the test box to engine AFES T/A panel
and wire harness 12352354 connector using test cables TC4 and TC5. Set
the test box switches as follows:
1. FIREWIRE TEST to NORMAL
2. AUTO FEXT to ACTIVE
3. MAN FEXT to ACTIVE
B Turn MASTER switch ON (refer to TM 9-2350-267- 10). Turn the engine
AFES T/A panel Maintenance switch to the horizontal position and check
to see that the green POWER ON lamp is on, indicating that the AFES is
powered and fully operational. If any of the red LED’s on the test box are
illuminated, press the RESET switch on the test box and go to step C. If none
of the LEDs are illuminated, go to step C.
2-306.3
Change 4
TM 9-2350-267-20
