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TM 5-4210-233-14&P-1
4-2. Unit Troubleshooting-Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELECTRICAL SYSTEM - PUMP PANEL - Continued
14
DIVERTER VALVE POSITION INDICATOR LIGHTS WILL NOT ILLUMINATE - Continued
Step 2. Check diverter valve switch for proper operation.
Replace switch (see para 4-179).
15
OUTRIGGER CONTROL PANEL ILLUMINATION LIGHTS DO NOT LIGHT WITH
AERIAL/MASTER SWITCH ON (Refer to Electrical Wiring Diagrams, Appendix H, Sheet 9 of 16.)
Step 1. Check bulb.
Replace bulb (see para 4-9.4).
Step 2. Check for +12V at aerial buss.
Refer to "+12 volts not present at aerial master buss" troubleshooting procedure.
Step 3. Check circuit breaker #1 for +12V.
Replace circuit breaker (see para 4-99).
Step 4. Check wiring for continuity.
Replace wire (see para 4-9.4).
ELECTRICAL SYSTEM - AERIAL CONTROL PANEL
1
AERIAL MASTER CIRCUIT DOES NOT ENERGIZE AERIAL CONTROLS
(Refer to Electrical Wiring Diagrams, Appendix H, Sheets 3 and 11 of 16.)
Step 1. Check switch.
Replace switch (see para 4-94).
Step 2. Check aerial solenoid.
Replace solenoid (see para 4-9.4).
Step 3. Check for +12V at circuit breaker #9 on battery accessory buss. Replace breaker (see para 4-99).
Replace breakers (see para 4-99).
Step 4. Check wiring for continuity.
Replace wire (see para 4-9.4)
4-129
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