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TM 5-4210-233-14&P-1
Table 4-2. Unit Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM - EMERGENCY MASTER CIRCUITS - Continued
9
REAR WARNING STROBES DO NOT ILLUMINATE/FLASH - Continued
Step 4.
Check trigger unit.
Replace trigger unit (see para 4-61).
Step 5.
Check for +12V at circuit breaker #4 on emergency master buss.
Replace breaker (see para 4-99).
Step 6.
Check wiring for continuity.
Replace wire (see para 4-9.4).
10
DECK SPOTLIGHTS DO NOT ILLUMINATE
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 8 of 16.)
Step 1.
Check bulb.
Replace bulb (see para 4-63).
Step 2.
Check switch at fixture.
Replace switch (see para 4-63).
Step 3.
Check for +12V at battery accessory buss.
Refer to "+12 volts not present at battery accessory buss" troubleshooting procedure.
Step 4.
Check wiring for continuity.
Replace wire (see para 4-9.4).
11
ELECTRONIC SIREN DOES NOT SOUND
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 3 of 16.)
Step 1.
Check for +12V at emergency master buss.
Refer to "+12 volts not present at emergency master buss" troubleshooting procedure.
Step 2.
Check speaker for proper operation.
Replace speaker (see para 4-86).
4-103
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