TM 5-5420-226-20-1
(
DETAILED TROUBLESHOOTING PROCEDURE
Symptom-54
SUPPORT SYSTEM - FIRE EXTINGUISHER
[Continued)
o
STEP
10
CONTINUED
T
Il Connect red probe of meter to contact A (CKT 975A) at
front
accessory
harness
connector
to tire extinguisher
I
relay.
Il Check if meter indicatescontinuity.
~ Does meter
indicate
continuity?
l Inspect front accesso~
harness for bent or broken
connector contacts or loose
CKT 975A154A wire at rear
of connectors.
l Repair connectors if
defective (page 10-298).
l If connectors are not
defective,
notify support
maintenance of bad front
accessory harness.
l Install front accessory
harness connector at
bulkhead disconnect
(page 10-270).
l Connect front accessory
harness connector at fire
extinguisher relay.
l Connect three battery
ground straps (page 10-268).
QNO
l Replace
fire extinguisher
relay (page
10-158).
.
Install front accessory
harness
connector
at
bulkhead
disconnect
(page
10-270).
l Connect
three
battery
ground
straps
(page 10-268).
.. . . . . . . . . ..---
TA107 264
4-575
