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HAZARD WARNING LIGHTS WILL NOT LIGHT.
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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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HAZARD WARNING LIGHTS WILL NOT LIGHT. cont'd -680640295
TM
5-2420-224-20-1
Table 3-5. Troubleshooting (Cont)
Malfunction
Test or Inspection
Corrective Action
ELECTRICAL SYSTEM (CONT)
Step 6. Check for +24 VDC between wire 462 (8) and ground at turn signal lever (9).
If +24 VDC is not present, repair wiring 462 between hazard
warning switch and turn signal lever.
If +24 VDC is present, go to step 7.
Step 7. Check for +24 VDC between wire 463 (10) and ground at hazard warning
switch (1).
If +24 VDC is not present, replace hazard warning switch.
If +24 VDC is present, go to step 8.
Step 8. Check for +24 VDC between wire 463 (10) and ground at relay K3 (11).
If +24 VDC is not present, repair wiring 463 between hazard
warning switch and relay K3.
If +24 VDC is present, go to step 9.
Step 9. Check for +24 VDC between wire 464 (12) and ground at relay K3 (11).
If +24 VDC is not present, repair wiring 464 between turn
signal lever and relay K3.
If +24 VDC is present, go to step 10.
Step 10. Check for +24 VDC between wire 445 (13) and ground at relay K3 (11).
If +24 VDC is not present, replace relay K3.
If +24 VDC is present, go to step 11.
Step 11. Check for +24 VDC between wire 445 (13) and ground at brake light diode
(14).
If +24 VDC is not present, repair wiring 445 between relay K3
and brake light diode.
If +24 VDC is present, go to step 12.
Step 12. Check for +24 VDC between wire 443 (15) and ground at brake light diode
(14).
If +24 VDC is not present, replace brake light diode
(page 4-168).
If +24 VDC is present, go to step 13.
Step 13. Check for +24 VDC between wire 443 (15) and ground at connector K (16).
If +24 VDC is not present, repair wiring 443 between brake
light diode and connector K.
If +24 VDC is present, go to step 14.
3-164

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