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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-CAB CONTROLS AND INDICATORS-Continued
10
ELECTRIC HORNS DO NOT SOUND
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 1 of 16.)
Step 1.
Check horns for proper operation.
Replace horns (see para 4-9.4).
Step 2.
Check horn relay.
Replace relay (see para 4-9.4).
Step 3.
Check column switch for proper operation.
Replace switch (see para 4-9.4).
Step 4.
Check wiring for continuity.
Replace wire (see para 4-9.4).
11
REAR SIGNAL BUZZER DOES NOT OPERATE
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 4 of 16.)
Step 1.
Check switch for proper operation.
Replace switch (see para 4-68).
Step 2.
Check buzzer unit for proper operation.
Replace buzzer (see para 4-96).
Step 3.
Check for +12V at circuit breaker #12 on battery accessory buss.
Replace breaker (see para 4-99).
Step 4.
Check wiring for continuity.
Replace wire (see para 4-9.4).
4-82
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