TM 5-1940-322-24
0007 00
ELECTRICAL SYSTEMS TROUBLESHOOTING (Contd)
Table 1. Electrical Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Check operation of oil pressure sending
6. OIL PRESSURE
unit.
GAUGE
INOPERATIVE
1. Verify voltage is present.
If voltage is not present inspect cable
and cable connection for damage,
replace cable if damaged.
2. Verify oil pressure sending unit is
If oil pressure sending unit is not
operating properly.
operating properly, replace
Test for 24 VDC at horn connections.
1. If 24 volts are not present, inspect
7. HORN
all connections and cables for
INOPERATIVE
damage (and button on auxiliary
switch panel).
2. If 24 volts are present, replace
horn (WP 0049 00).
1. Visually inspect wiper motor for
If wiper motor is not working
8. WINDSHIELD
normal operation.
properly, ensure power plug is
WIPERS
connected to motor.
INOPERATIVE
2. Check for power at motor.
1. If power is present, replace motor
connector.
2. If power is not present, check for
power on wiper button on auxiliary
switch panel.
3. Check power at wiper button.
1. If power is present, replace wiring
on wiper electrical leads.
2. If power is not present, replace
wiper button on auxiliary switch
panel (WP 0043 00).
