ONE COMBINATION TAIL AND FLOODLIGHT TAILLIGHT DOES NOT WORK

TM 5-2420-222-20-1

ORGANIZATIONAL TROUBLESHOOTING - CONTINUED

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

5. ONE COMBINATION TAIL AND FLOODLIGHT TAILLIGHT DOES NOT WORK

WARNING

Although ignition lock switch must be on and battery ground cable connected to test electrical circuit

voltage, turn off ignition lock switch and disconnect battery ground cable before doing resistance tests or

replacing parts. This will keep you from getting shocked and prevent damage to parts and equipment.

Step 1.

Pull yellow wire terminal (1) out of connector (2). Using multimeter set to RX1 scale, place red probe

on yellow wire terminal (1) and black probe on taillight (3). Check for 0 ohm on multimeter.

If multimeter reads 0 ohm, repair yellow wire in rear light wiring harness (page 2-137).

Plug terminal (1) into connector (2).

If multimeter reads more than 0 ohm, go to step 2.

Step 2.

Disassemble combination tail and floodlight (page 2638). Using multimeter set to RX1 scale, place

red probe on positive lamp terminal (4) and black probe on lamp base (5). Check for 0 ohm on

multimeter.

If multimeter reads 0 ohm, go to step 3.

If multimeter reads more than 0 ohm, replace lamp and assemble combination tail and

floodlight (page 2638). Plug terminal (1) into connector (2).

Step 3.

Check taillight positive lead (6), socket (7), and taillight ground lead (8) for cracked, corroded, or

broken connections. Check for loose ground terminal (9).

If positive lead (6) or socket (7) is cracked or broken, replace socket with lead assembly

and assemble combination tail and floodlight (page 2-638). Plug terminal (1) into

connector (2).

If positive lead (6), socket (7), or ground lead (8) is corroded, clean using fine abrasive

paper (item 20, Appendix C). Assemble combination tail and floodlight (page 2638). Plug

terminal (1) into connector (2).

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