BRAKE LIGHTS WILL NOT LIGHT WHEN BRAKE PEDAL APPLIED.

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

60. BRAKE LIGHTS WILL NOT LIGHT WHEN BRAKE PEDAL APPLIED.

NOTE

Master light switch must be set to SER DRIVE or STOP LIGHT, brake pedal

depressed, and turn signal lever off. Failure to do so will cause erroneous results.

Refer to wiring diagram (page 3-191) for all wiring repair steps.

Check for +24 VDC between wire 442 (1) and ground at brake light switch

Step 1.

(2).

If +24 VDC is present, go to step 7.

If +24 VDC is not present, go to step 2.

Step 2. Check for +24 VDC between wire 441 (3) and ground at brake light switch

(2).

If +24 VDC is present, replace brake light switch (page 4-200).

If +24 VDC is not present, go to step 3.

Step 3. Disconnect connector J (4) and check for +24 VDC between wire 441 (3)

and ground.

If +24 VDC is present, repair wiring 441 between connector J

and brake light switch.

If +24 VDC is not present, reconnect connector J and go to

step 4.

Step 4. Loosen two captive screws (5) and pull bracket (6) out enough to gain

access to area behind bracket.

Step 5. Remove two clamps (7) and pipe assembly (8).

Step 6. Check for +24 VDC between wire 441 (3) and ground at fuse box 1 (9).

If +24 VDC is present, repair wiring 441 between fuse box 1

and connector J.

If +24 VDC is not present, replace fuse.

Step 7. Check for +24 VDC between wire 444 (10) and ground at turn signal lever

(11).

If +24 VDC is present, replace turn signal lever (page 4-122).

If +24 VDC is not present, go to step 8.