STOPLIGHT(S) DO NOT OPERATE (S/N YB6122 075 AND UP). (Cont) -725550294

TM 9-2330-385-14

16. STOPLIGHT DOES NOT OPERATE (S/N YB6122 075 AND UP) (CONT).

KNOWN INFO

TEST OPTIONS

WARNING

Read WARNING

Truck electrical system OK.

Voltage test.

on Page 4-118.35

All other lights on trailer

operate.

REASON FOR QUESTION

Taillights operate indicating

Are 22 to 28 vdc measured

LED composite light ground

If 22 to 28 vdc are not present

(wire 1435) OK.

between terminal B and D on

at 24 vdc cable, terminal B and

LED composite light OK.

D, stoplight will not operate.

trailer end of 24 vdc cable?

POSSIBLE PROBLEMS

24 vdc cable faulty.

Repair or replace 24

Wire 1003C faulty.

vdc cable. Verify re-

Wire 1003C/22 faulty.

pair, go to Step 4 of

this Fault.

YES

4-118.34