TM 5-3805-292-23
0006
ELECTRICAL TROUBLESHOOTING - ONE OR MORE EXTERIOR LIGHT(S) INOPERATIVE CONTINUED
R
Disconnect work light switch
(WP 0166). Reconnect batteries and
power up instrument panel (TM 5-3805-
12V
Perform Open Harness Test for circuit
292-10).
NO
present?
Measure voltage between work light
122 (WP 0173).
switch connector 311-1, circuit 122D (R),
harness side and ground (WP 0175,
Frame 12. RH Console).
YES
Replace work light switch (WP 0166).
S
Check 20A work light fuse (TM 5-3805-
Replace fuse
Fuse okay?
NO
292-10).
(TM 5-3805-292-10).
YES
Remove light relay #1 (TM 5-3805-
292-10).
12V
Perform Open Harness Test for circuit
Measure voltage between relay connector
NO
pin 30, circuit 122K (R), fuse box side, and
present?
122 (WP 0173).
Center).
YES
Place light switch on work light position
(TM 5-3805-292-10).
12V
Measure voltage between light relay #1
present?
connector pin 86, circuit 790EE (P), fuse
10. Power Center).
NO
Disconnect work light switch
Check for continuity between work light switch
Perform Open Harness Test for
connector 311-5, circuit 790DD (P), harness
NO
present?
circuit 790 (WP 0173).
side and light relay #1 connector pin 86, circuit
YES
Connect work light switch (WP 0166).
YES
Connect a jumper wire between light relay
#1 connector pin 30, circuit 122A (R), fuse
Work lights
Perform Open Harness Test for circuit
box side, and relay #1 connector pin 87
NO
illuminate?
790 (WP 0173).
circuit 790AL (P), fuse box side (WP 0175,
Frame 10. Power Center).
YES
X
CONTINUED
