TM 5-3805-292-23
0006
ELECTRICAL TROUBLESHOOTING - ONE OR MORE EXTERIOR LIGHT(S) INOPERATIVE CONTINUED
AA
Disconnect rear position light
12V
Perform Open Harness Test for
Measure voltage between work light
NO
connector 35 or 37, circuit 790U or
present?
circuit 790 (WP 0173).
790V (P), harness side, and ground
YES
Check continuity between work light
connector 35 or 37, circuit 178AJ or
Continuity
Repair circuit 178 or replace wiring
178AK (B), harness side, and
NO
present?
chassis harness (WP 0146).
Lights).
YES
Reconnect rear position light (WP 0163).
AM
Check for continuity between light
Continuity
Repair circuit 178 or replace chassis
relay # 2 connector pin 85 and
NO
present?
wiring harness (WP 0146).
Power Center).
YES
Measure voltage between light
relay #2 connector pin 86, circuit
12V
Replace light relay #2
790K (P), fuse box side, and
YES
present?
(TM 5-3805-292-10).
Power Center).
NO
Disconnect work light switch
Check for continuity between work light
Reinstall work light switch (WP
Continuity
switch connector 311-3, circuit 790E (R),
0166). Perform Open Harness Test
NO
harness side and light relay #2
present?
for circuit 790 (WP 0173).
connector pin 86, circuit 790K (P), and
Center and Frame 12. RH Console).
YES
Replace work light switch (WP 0166).
END OF TASK