TM 5-3805-291-23-1
TROUBLESHOOTING WITHOUT A DIAGNOSTIC CODE - CONTINUED
0008 00
Table 2. Electrical System Troubleshooting - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. Check worklight relay coil power
1. If continuity is not present, there is an
6.
One or More Worklights
circuit continuity.
open circuit between worklight relay
Are Inoperative -
(a) Disconnect wiring harness from
and main light switch. Replace wiring
Continued.
main light switch (WP 0061 00).
harness in question (WP 0195 00 thru
(b) Worklight relay remains removed.
WP 0201 00).
(c) Battery disconnect switch remains 2. If continuity is present, replace main
in ON position (TM 5-3805-291-
light switch (WP 0061 00).
10).
(d) Check continuity between
worklight blackout relay holder
wiring harness pin 85, wire A652
(BU), and main light switch wiring
harness pin J, wire A652 (BU).
1. Determine condition.
1. If one service light is inoperative,
7.
One or Both Service Lights
replace service light bulb (WP 0071
Are Inoperative.
00). If problem still exists, go to Test 2.
2. If both service lights are inoperative, go
to Test 4.
2. Check for open power circuit.
1. If battery voltage is present, go to Test
(a) Disconnect wiring harness from
3.
service light housing (WP 0071
2. If battery voltage is not present, there
00).
is an open circuit between service light
(b) Turn battery disconnect and
relay and service light housing.
engine start switches to ON
Replace wiring harness in question
position (TM 5-3805-291-10).
(WP 0195 00 thru WP 0201 00).
(c) Select service drive mode on main
light switch (TM 5-3805-291-10).
(d) Measure voltage at service light
between wiring harness pin 1, 619
(GN), and ground.
3. Check for open ground circuit.
1. If continuity is present, replace or
(a) Battery disconnect switch remains
repair service light housing and wiring.
in ON position (TM 5-3805-291- 2. If continuity is not present, there is an
10).
open service light ground circuit.
(b) Wiring harness remains
Replace wiring harness in question
disconnected from service light
(WP 0195 00 thru WP 0201 00).
housing.
(c) Turn engine start switch to OFF
position (TM 5-3805-291-10).
(d) Check continuity at service light
between wiring harness pin 2, wire
200 (BK), and ground.
