REAR SIDE MARKER LIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550437

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) Disconnect wire 1012B at nonoperating

rear side marker light.

(2) Set multimeter select switch to

volts dc.

(3) Connect positive (+) multimeter lead

to wire 1012B.

(4) Connect negative (- ) multimeter lead

to a known good ground.

(5) While assistant turns ON ENGINE

switch and turns on lights, observe

multimeter (TM 9-2320-364-10).

(a) If there are not 10 to 14 vdc

present, perform Steps (6) and (7)

below and repair wire 1012B

(see schematic Fig FO-1.1) or

replace rear side marker light wire

(b) If there are 10 to 14 vdc present,

wire 1012B is OK. Perform

Steps (6) and (7) below

and go to Step 3 of this fault.

(6) Turn off lights.

(7) Turn OFF ENGINE switch.

(8) Connect wire 1012B.

CONTINUITY TEST

(1) Remove two screws and lens cover.

(2) Set multimeter select switch to ohms.

(3) Is continuity measured between

rear side marker light ground contact

and a known good ground?

(a) If there is no continuity, repair

wire 1435 (see schematic, Fig

FO-1.1) or replace rear side marker

light wire harness (Para 4-30.1).

(b) If there is continuity, replace rear

side marker light assembly

(4) Install lens cover and two screws.