TM 9-2320-272-24-1
Table 2-3. Electrical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
18. HEADLAMP (BOTH SIDES) INOPERATIVE
Test 1. Test headlamps connector voltage for both sides (malfunction 17, test 1).
Test 2. Test headlamp high-beam selector switch.
Step 1. Place battery and light switch to OFF' position.
CAUTION
Lead 15 or wire 16 is hot whenever batteries are connected.
Step 2.
Disconnect leads 17 and 18 at high-beam selector switch.
Step 3.
Place battery and light switch to ON position.
Step 4.
Connect multimeter positive lead to terminal 17 on high-beam selector switch and
negative lead to vehicle chassis ground.
Step 5.
Note multimeter voltage reading.
Step 6.
With multimeter negative lead connected to ground, connect positive lead to exposed
terminal 18 on high-beam selector switch.
Step 7.
Note multimeter voltage reading,
a. If battery voltage was indicated at terminals 17 or 18 on switch, but not at
headlamps, the wiring harness is defective. Notify DS maintenance.
b. If battery voltage was not indicated at terminals 17 or 18 on switch, go to step 8.
Step 8.
Operate high-beam selector switch. Repeat steps 4 through 7.
a. If battery voltage was indicated at terminals 17 and 18 alternately as switch was
operated, but not at the headlamps, wiring harness is defective. Notify DS
maintenance.
b. If battery voltage was not indicated at terminals 17 or 18 alternately as switch was
operated, go to step 9.
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