TM 9-2330-275-14&P
Table 4-1. Unit Troubleshooting Chart (con’t).
ELECTRICAL SYSTEM.
4. BLACKOUT STOPLIGHTS AND TAILLIGHTS
INOPERATIVE.
Initial Setup:
Equipment Conditions:
Tools and Test Equipment:
l Dolly set parked on level surface.
l General mechanic’s tool kit
Dolly set coupled to towing vehicle with towing
Common no. 1 shop set
vehicle parking brake applied (para 2-14).
l Multimeter
NOTE
l
Instead of using multimeter
for voltage check, STE/lCE
TEST no. 89 may be per-
formed.
Instead of using multimeter
for continuity check, STE/lCE
TEST no. 91 may be per-
formed.
l Perform pin-to-pin continu-
ity checks on intervehicular
cable (IVC) before any other
tests to ensure there are no
broken wires internal to IVC.
If any tests fail, replace IVC
before proceeding.
l This procedure is identical
for both taillights.
A. Make sure towing vehicle light switch is set on
B/O DRIVE and IVC is securely attached to
towing vehicle.
Turn towing vehicle master
switch OFF. Disconnect IVC from dolly distri-
bution box. Place multimeter red lead on IVC
pin F, and ground black lead by placing it on pin
L. Turn towing vehicle master switch ON and
check for battery voltage. Repeat for pins C
and A.
IS BATTERY VOLTAGE PRESENT?
4-16
