TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
16.Cab Interior Light Not Working - Continued.
b. If the switch is damaged or
faulty, replace cab interior
light (WP 0089 00).
17. 12V Utility Plug Not Working.
1. Check circuit breaker F14 for Replace circuit breaker as
trip.
required.
2. Check voltage at the 12V a. If voltage (24V) is found at pin
utility plug, with the ignition
2 and none at pin 1, remove the
on, between pins 1 and 4.
cab electrical distribution box
There should be 12V. Check
to gain access to the voltage
voltage between pins 2 and 4.
converter.
There should be 24V.
b. If no voltage (24V) is found at
pin 2, check circuit breaker
F14 and continuity of wires
108, A108A, 101, 102, and
A102 (WP 0048 00-40).
c. Repair or replace damaged
wires or connectors (WP 0113
00).
3. Check the 5 amp fuse on the Replace the 5 amp fuse if blown.
voltage converter.
4a. With the ignition on, check the a. If no input voltage (24V) is
input voltage (24V) of the
found, check circuit breaker
voltage converter to one of the
F14 and check continuity of
two middle pins on the
wire A108 (WP 0048 00-40).
converter.
4b. With the ignition on, check
b. Reinstall jumper wire A101B
the input voltage (24V) of
and check wires A101A and
between the two middle pins
A101
continuity/ground
of the converter.
connection at 37-5 (WP 0048
00-40).
4c. With the ignition on, check the c. If no output voltage from
output voltage (12V) of the
converter is found, replace
converter to one of the two
voltage converter (WP 0074
middle pins on the converter.
00).
0007 00-46
