Table 4-2. Unit Troubleshooting-continued -706880273

TM 5-4210-233-14&P-1

4-2. Unit Troubleshooting-Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM - APU AND 110-VOLT CIRCUITS - Continued

5DRIVERS/PASSENGERS FLOODLIGHT (11 OV) DOES NOT ILLUMINATE WITH CAB SWITCH

AND AUXILIARY POWER UNIT RUNNING - Continued

Step 4. Check relay inside service panel for proper operation.

Replace relay (see para 4-9.4).

Step 5. Check for +12V at circuit breaker #14 at battery accessory buss.

Replace breaker (see para 4-99).

Step 6. Check wiring for continuity.

Replace wire (see para 4-9.4).

6 NO POWER AT ANY 11OV OUTLET (EXCEPT LADDER TIP)

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 15 of 16.)

Step 1. Check outlet.

Replace outlet (see para 4-117).

Step 2. Check breaker.

Reset/replace breaker (see para 4-119).

Step 3. Check auxiliary power unit for proper operation.

Refer to auxiliary power unit test procedure (see Chapter 6).

Step 4. Check writing for continuity.

Replace wire (see para 4-9.4).

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