SERVICE HEADLAMP CIRCUIT (LEAD 18). (Cont)

TM 9-2350-238-20-1

2-12. ELECTRICAL CIRCUIT TROUBLESHOOTING (CONT).

Set MASTER switch OFF. Remove lamp from inoperative service

Step 1.

headlamp. Refer to page 2-601. Connect multimeter to the parallel lamp

terminals. If multimeter indicates about 2 ohms, go to step 2. If multimeter

indicates infinity, replace lamp. Refer to page 2-601.

Make sure MASTER switch is OFF before repairing electrical

circuits. Failure to observe this warning could result in injury to

personnel.

To access line disconnect, remove transmission deck lid assembly. Refer

Step 2.

to page 2-938. Disconnect lead 18. Place red probe in lead 18. Ground

black probe. Press headlamp dimmer switch for high beam operation. Set

MASTER switch ON. Turn vehicular light switch to SER DRIVE. If multi-

meter indicates about 24 volts, repair service headlamp assembly. Refer to

page 2-601. If multimeter indicates no voltage, repair lead 18 from line

disconnect to service headlamp. Refer to page 2-371. Set MASTER switch

OFF. Turn vehicular light switch OFF. Connect lead.

2-222