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
1. If continuity is not present, there is an
9. Check service light relay coil power
7.
One or Both Service Lights
open circuit between service light relay
circuit continuity.
Are Inoperative -
and main light switch. Replace wiring
(a) Disconnect wiring harness from
Continued.
harness in question (WP 0169 00 thru
main light switch (WP 0049 00).
WP 0175 00).
(b) Service light relay remains
2. If continuity is present, go to Test 10.
removed.
(c) Turn battery disconnect switch
and engine start switch to OFF
position (TM 5-3805-290-10).
(d) Check continuity between service
light relay wiring harness pin 5,
circuit 8102 (BU), main light
switch wiring harness pin J, and
circuit 8102 (BU).
10. Check for open service light relay coil 1. If continuity is not present, there is an
open ground circuit for service light
ground circuit.
relay coil. Replace wiring harness in
(a) Service light relay remains
question (WP 0169 00 thru WP 0175
removed.
00).
(b) Turn battery disconnect switch to
ON position (TM 5-3805-290-10). 2. If continuity is present, replace main
light switch (WP 0049 00).
(c) Check continuity at service light
relay between wiring harness pin
2, circuit 200 (BK), and ground.
1. Determine condition.
1. If one service stoplamp or one or more
8.
One Service Stoplamp or
turnlamps (not all) are inoperative,
One or More Turnlamps
replace inoperative turnlamp bulb (WP
Are Inoperative.
0058 00) or rear light housing cover
with a known good one (WP 0062 00).
If problem still exists (for rear turnlamp
only), reinstall old cover. If replaced,
go to Test 2.
2. If all turnlamps are inoperative, go to
Test 4.
3. If all stoplamps are inoperative, refer to
Malfunction 9, All Service Stoplamps
are Inoperative in this work package.
2. Check for open power circuit.
1. If continuity is present and rear
(a) Disconnect wiring harness from
turnlamp is inoperative, replace
front turnlamp housing (WP 0062
turnlamp switch (WP 0051 00).
00) or rear light housing (WP 0058 2. If continuity is present and front
00).
turnlamp is inoperative, go to Test 3.
(b) Disconnect wiring harness from
3. If continuity is not present, there is an
front turnlamp switch (WP 0051
open circuit between inoperative
00).
turnlamp and turnlamp switch. Replace
(c) Turn battery disconnect switch
wiring harness in question (WP 0169
and engine start switch to ON
00 thru WP 0175 00).
position (TM 5-3805-290-10).
