CORRECTIVE ACTION Continued
The following steps apply to both the LEFT and RIGHT dischargers. The LEFT and RIGHT firing
buttons fire three grenades from each side at the same time. Failure to do all the steps could leave
inoperative firing on some tubes.
Reconnect smoke grenade launcher system wiring harness to FIRE SMOKE box assembly. Disconnect
cable assembly for M239 smoke grenade launcher, right hand side discharger feed through from
grenade launcher assembly. Place red lead of multimeter in socket C and black lead to ground.
Turn MASTER and ARM SMOKE switches ON, push RIGHT switch, and check for voltage. Turn
MASTER and ARM SMOKE switches OFF. Check ground circuit for continuity by placing red lead
of multimeter in socket B and black lead to ground. If voltage and continuity are present in all circuits,
notify Direct Support Maintenance. If voltage or continuity is not present in any circuit, repair/replace
harness cable assembly for M239 smoke grenade launcher right hand side discharger feed through,
(see WP 0253 00).