Table 4-1. Unit Troubleshooting Chart (cont).
ELECTRICAL SYSTEM (cont).
6. DIM OR FLICKERING LIGHTS.
Tools and Test Equipment:
Dolly set parked on level surface.
. General mechanics tool kit
l Dolly set coupled to towing vehicle with towing
l Common no. 1 shop set
vehicle parking brake applied (para 2-14).
Instead of using multimeter for voltage
check STE/lCE TEST no. 89 may be
Instead of using multimeter for continu-
ity check, STE/ICE TEST no. 91 may be
l Perform pin-t-pin continuity checks on
intervehicular cable (IVC) before any
other tests to ensure there are no bro-
ken wires internal to IVC. If any tests
fail, replace IVC before proceeding.
A. Turn towing vehicle master switch OFF. Dis-
connect intervehicular cable from distribution
box. Place multimeter red lead on socket A of
intervehicular cable, and ground black lead by
placing on pin L. Turn towing vehicle master
switch ON and check for voltage.
IS VOLTAGE LESS THAN 21 VDC?