TM 5-3805-290-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 2. Electrical System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. Check stoplamp switch.
1. If continuity is present, there is an open
9.
All Stoplamps Are
(a) Stoplamp switch remains
circuit between stoplamp switch and
Inoperative - Continued.
disconnected from wiring harness.
main light switch. Replace wiring
(b) While pressing and holding brake
harness in question (WP 0169 00 thru
pedal, check continuity at
WP 0175 00).
stoplamp switch between switch 2. If continuity is not present, replace
pins A and B.
stoplamp switch (WP 0094 00).
1. Determine condition.
1. If only one taillamp is inoperative,
10. One or Both Taillamps Are
temporarily replace inoperative rear
Inoperative.
light housing cover with a known good
one (WP 0062 00). If problem still
exists, there is an open circuit between
rear light housing and main light
switch. Reinstall old cover and repair
housing (WP 0062 00) or replace
wiring harness in question (WP 0169
00 thru WP 0175 00).
2. If both taillamps are inoperative but all
other rear lights operate correctly, go to
Test 2.
2. Check for open power circuit.
1. If continuity is present, replace main
(a) Disconnect wiring harness from
light switch (WP 0049 00).
rear light housing (WP 0058 00).
2. If continuity is not present, there is an
(b) Disconnect wiring harness from
open circuit between rear light housing
main light switch (WP 0049 00).
and main light switch. Replace wiring
(c) Measure voltage at inoperative
harness in question (WP 0169 00 thru
rear lamp between wiring harness
WP 0175 00).
circuit 21 and main light switch
wiring harness pin H, circuit 614
(PU).
1. Determine condition.
1. If one blackout marker is inoperative
11. One or Both Blackout
only, temporarily replace inoperative
Markers Are Inoperative.
rear light housing cover with a known
good one (WP 0058 00). If problem
still exists, there is an open circuit
between rear light housing and main
light switch. Reinstall old cover and
repair housing (WP 0058 00) or replace
wiring harness in question (WP 0169
00 thru WP 0175 00).
2. If both blackout markers are
inoperative but all other rear lights
operate correctly, go to Test 2.
