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
1. Check stoplamp power circuit.
1. If battery voltage is not present, go to
9.
All Stoplamps Are
(a) Disconnect turnlamp switch from
Test 2.
Inoperative.
wiring harness (WP 0066 00).
2. If battery voltage is present, replace
(b) Turn battery disconnect and
turnlamp switch (WP 0066 00).
engine start switches to ON
position (TM 5-3805-291-10).
(c) Select service drive mode on main
light switch (TM 5-3805-291-10).
(d) While pressing and holding brake
pedal, measure voltage at
turnlamp switch between wiring
harness pin 4, wire 604 (OR), and
ground.
2. Check stoplamp power circuit
1. If continuity is not present, there is an
continuity.
open circuit between main light switch
(a) Disconnect main light switch (WP
and turnlamp switch. Replace wiring
0061 00).
harness in question (WP 0195 00 thru
(b) Turnlamp switch remains
WP 0201 00).
disconnected.
2. If continuity is present, go to Test 3.
(c) Battery disconnect switch remains
in ON position (TM 5-3805-291-
10).
(d) Turn engine start switch to OFF
position (TM 5-3805-291-10).
(e) Check continuity between main
light switch wiring harness pin C,
wire 604 (OR), and turnlamp
switch wiring harness pin 4, wire
604 (OR).
3. Check stoplamp switch output circuit 1. If continuity is not present, there is an
for continuity.
open circuit between stoplamp switch
(a) Main light switch remains
and main light switch. Replace wiring
disconnected from wiring harness.
harness in question (WP 0195 00 thru
(b) Disconnect stoplamp switch from
WP 0201 00).
wiring harness (WP 0064 00).
2. If continuity is present, go to Test 4.
(c) Turn battery disconnect switch to
OFF position (TM 5-3805-291-
10).
(d) Check continuity between
stoplamp switch wiring harness
pin 2, wire 698 (PU), and main
light switch wiring harness pin K,
wire 698 (PU).