oBRAKE INDICATOR LIGHT WILL NOT LIGHT WHEN FRONT DISC BRAKE PADS WORN OUT

TM 5-2420-224-20-1

Table 3-5. Troubleshooting (Cont)

Malfunction

Test or Inspection

Corrective Action

ELECTRICAL SYSTEM (CONT)

56. BRAKE INDICATOR LIGHT WILL NOT LIGHT WHEN FRONT DISC BRAKE PADS WORN

OUT.

NOTE

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

PANEL BRT. Failure to do so will cause erroneous results.

Refer to wiring diagram (page 3-180) for all wiring repair steps.

Step 1. Set parking brake.

If brake indicator light is not lit, perform Malfunction 54.

If brake indicator light is lit, go to step 2.

NOTE

Perform steps 2 thru 4 with parking brake off.

Step 2. Disconnect connector AF (1) and check for +24 VDC between wire 332 (2)

and ground.

If +24 VDC is not present, repair wiring 332 between

connector C and connector AF.

If +24 VDC is present, reconnect connector AF and go to

step 3.

Step 3. Disconnect leads (3) from disc brake pad indicator connector (4) at both

front disc brake assemblies (5).

Step 4. Check for +24 VDC between disc brake pad indicator connector (4) and

ground.

If +24 VDC is not present, replace front disc brake pad

indicator wiring harness (page 4-231).

If +24 VDC is present, replace hook switches (6).