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BRAKE INDICATOR LIGHT WILL NOT LIGHT WHEN BRAKE FLUID RESERVOIR OR CLUTCH HYDRAULIC RESERVOIR LOW cont'd -680640307
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TM-5-2420-224-20-1 Tractor Wheeled 4x4 DED Small Emplacement Excavator (SEE) and High Mobility Material Handler (HMMH) Manual
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oBRAKE INDICATOR LIGHT WILL NOT LIGHT WHEN FRONT DISC BRAKE PADS WORN OUT cont'd -680640309
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).

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