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
8. Check for an open worklight relay coil 1. If battery voltage is not present, go to
6.
One or More Worklights
power circuit.
Test 9.
Are Inoperative -
(a) Remove worklight relay (WP
2. If battery voltage is present, go to Test
Continued.
0054 00).
10.
(b) Battery disconnect switch and
engine start switch remain in ON
position (TM 5-3805-290-10).
(c) Select service drive mode on main
light switch (TM 5-3805-290-10).
(d) Measure voltage at worklight relay
between wiring harness pin 5,
circuit 8630 (BU), and ground.
9. Check worklight relay coil power
1. If continuity is not present, there is an
circuit continuity.
open circuit between worklight relay
(a) Disconnect wiring harness from
and main light switch. Replace wiring
main light switch (WP 0049 00).
harness in question (WP 0169 00 thru
(b) Worklight relay remains removed.
WP 0175 00).
(c) Battery disconnect switch remains 2. If continuity is present, replace main
in ON position (TM 5-3805-290-
light switch (WP 0049 00).
10).
(d) Check continuity between
worklight relay wiring harness pin
5, circuit 8630 (BU), and main
light switch wiring harness pin, J
circuit 8630 (BU).
10. Check for open worklight relay coil
1. If continuity is present, there is an open
ground circuit.
ground circuit for worklight relay coil.
(a) Worklight relay remains removed.
Replace wiring harness in question
(b) Battery disconnect switch remain
(WP 0169 00 thru WP 0175 00).
in ON position (TM 5-3805-290- 2. If continuity is present, go to Test 11.
10).
(c) Turn engine start switch to OFF
position (TM 5-3805-290-10).
(d) Check continuity at worklight
relay between wiring harness pin
2, circuit 200 (BK), and ground.
0008 00-26
