TM 5-3805-248-23-1
ELECTRICAL ACCESSORIES TROUBLESHOOTING PROCEDURES - CONTINUED
0011 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
d. Place battery disconnect switch in
1. If battery voltage is not indicated, repair
9.
Horn Is Inoperative -
ON position (TM 5-3805-248-10).
open circuit between backup alarm/horn
Continued.
relay and fuse box (WP 0018 00).
2. If battery voltage is indicated, go to Test
6.
6.
Check for voltage to horn solenoid.
a. Place battery disconnect switch in
OFF position (TM 5-3805-248-10).
b. Set multimeter to appropriate
voltage range (WP 0018 00).
c. Disconnect horn solenoid electrical
connections (WP 0219 00).
d. Connect multimeter positive lead to
white wire of horn solenoid (harness
side) and meter negative lead to
chassis ground.
394-1641
e. Place battery disconnect switch in
1. If battery voltage is not indicated, repair
ON position (TM 5-3805-248-10).
open circuit between horn solenoid and
backup alarm\horn relay (WP 0018 00).
2. If battery voltage is indicated, go to Test
7.
7.
Check for continuity between horn
switch and horn solenoid.
a. Place battery disconnect switch in
OFF position (TM 5-3805-248-10).
0011 00-21
