LEFT BLACKOUT TAILLIGHT WILL NOT LIGHT.

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

67. LEFT BLACKOUT TAILLIGHT WILL NOT LIGHT.

NOTE

Vehicle MASTER disconnect switch must be ON and master light switch set to BO

DRIVE. Failure to do so will cause erroneous results.

Refer to wiring diagram (page 3-206) for ail wiring repair steps.

Step 1. Remove two screws (1), two washers (2), and guard (3). Loosen six screws

(4) and remove retainer (5).

Step 2. Remove left blackout tail lamp (6) and check for continuity.

If there is no continuity, replace lamp.

If there is continuity, go to step 3.

Step 3. Disconnect connector B (7) and check for +24 VDC between wire 48 (8)

and ground.

If +24 VDC is not present, repair wiring 48 between

connector B and fuse box 1.

If +24 VDC is present, reconnect connector B and go to step 4.

Step 4. Disconnect connector Y (9) and check for +24 VDC between wire 48 (8)

and ground.

If +24 VDC is not present, repair wiring 48 between

connector Y and connector B.

If +24 VDC is present, reconnect connector Y and go to step 5.

Step 5. Check for +24 VDC between wire 48 (8) and ground at left blackout taillight

connector (10).

If +24 VDC is present, replace rear composite stoplight/taillight

(page 4-190).

If +24 VDC is not present, repair wiring 48 between left

blackout taillight connector and connector Y.