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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
33
LOW VOLTAGE BUZZER DOES NOT SOUND WHEN VOLTAGE IS LOW-Continued
Step 3. Check for +12V at circuit breaker #1 on ignition accessory buss.
Replace breaker (see para 4-99).
Step 4. Check wiring for continuity.
Replace wire (see para 4-9.4).
34
LOW VOLTAGE BUZZER CONTINUES TO SOUND WHEN VOLTAGE IS AT OR ABOVE 12V
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 3 of 16.)
Step 1. Check low voltage relay.
Replace relay (see para 4-9.4).
35
VOLTMETER (12V) DOES NOT OPERATE
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 2 of 16.)
Step 1. Check meter.
Replace meter (see para 4-93).
Step 2. Check for +12V at circuit breaker #1 on ignition accessory buss.
Replace breaker (see para 4-99).
Step 3. Refer to "+12 volts not present at ignition accessory buss" troubleshooting procedure.
Step 4. Check wiring for continuity.
Replace wire (see para 4-9.4).
4-94

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