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Table 4-2. Unit Troubleshooting-continued -706880204
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TM-5-4210-233-14-P-1 Firfighting Truck 100 Ft. Aerial Ladder 1000 GPM Manual
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Table 4-2. Unit Troubleshooting-continued -706880206
TM 5-4210-233-14&P-1
Table 4-2.
Unit Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM-IGNITION CIRCUITS-Continued
14
NEUTRAL SAFETY CIRCUIT DOES NOT PROVIDE +12V SIGNAL TO CRY030
(Refer to Electrical Wiring Diagram, Appendix H, Sheet 5 of 16.)
Step 1.
With ignition switch on, check for +12V at circuit breaker #5 on ignition accessory buss.
Replace circuit breaker (see para 4-99).
Step 2. With shift selector in neutral, check for +12V on both sides of neutral safety switch.
Replace neutral safety switch (see para 4-9.4).
Step 3. Check wiring for continuity
Replace wire (see para 4-9.4).
15
+12 VOLTS IS NOT PRESENT AT BATTERY ACCESSORY BUSS
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 5 of 16.)
Step 1. Check batteries for proper charge.
Charge or replace batteries (see para 4-114).
Step 2. Check battery selector switch.
Replace switch (see para 4-101).
Step 3. Check wiring for continuity.
Replace wires (see para 4-9.4).
16
+12 VOLTS IS NOT PRESENT AT IGNITION ACCESSORY BUSS
(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 3 of 16.)
Step 1. Check ignition solenoid.
Replace solenoid (see para 4-9.4).
Step 2. Check ignition switch.
Replace switch (see para 4-9.4).
Step 3. Check wiring for continuity.
Replace wires (see para 4-9.4).
4-76

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