REAR SIDE MARKER LIGHT(S) DO NOT OPERATE. (Cont) -725550166

TM 9-2330-385-14

2. REAR SIDE MARKER LIGHT(S) DO NOT OPERATE (CONT).

KNOWN INFO

TEST OPTIONS

WARNING

Read WARNING

Truck electrical system OK.

on Page 4-39

Continuity test.

All other trailer lights operate.

Rear junction box OK.

Light lamp OK.

REASON FOR QUESTION

Is continuity measured

If rear side marker light ground

POSSIBLE PROBLEMS

between side marker light

is faulty, corroded, or loose,

socket ground and a

light will not operate.

Rear side marker light faulty.

known good ground?

Wire 1012-26 faulty.

Replace rear side

marker light

Verify repair, go to

Step 7 of this Fault.

YES

4-38