STOPLIGHT DOES NOT OPERATE. (Cont) -725550201

TM 9-2330-385-14

Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical

circuits, a direct short may result. Damage to equipment, injury, or death to personnel may occur.

VOLTAGE TEST

(1) Set multimeter select switch to

volts dc.

(2) Connect positive (+) multimeter lead

to center contact of socket.

(3) Connect negative (--) multimeter lead

to a known good ground.

(4) While assistant fully applies brake

pedal, observe multimeter

(TM 9-2320-364-10).

(a) If 22 to 28 vdc are not present,

release brake pedal and go to

Step (4) of this fault.

(b) If 22 to 28 vdc are present,

release brake pedal and go to

Step (3) of this fault.

CONTINUITY TEST

(1) Set multimeter select switch to ohms.

(2) Is there continuity between stoplight

socket ground and a known good

ground?

(a) If there is no continuity,

replace rear composite light

(b) If there is continuity, fault not

corrected. Perform Steps (3)

and (4) below and notify

supervisor.

(3) Install lamp in stoplight socket.

(4) Install preformed packing, composite

light cover, and six captive screws.