Table 4-2. Unit Troubleshooting-continued -706880231

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

Table 4-2. Unit Troubleshooting - Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

ELECTRICAL SYSTEM - EMERGENCY MASTER CIRCUITS - Continued

SIDE FLASHERS DO NOT ILLUMINATE/FLASH

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 7 of 16.)

Step 1. Check bulb.

Replace bulb (see para 4-175).

Step 2. Check flasher unit.

Replace flasher unit. (see para 4-9.4)

Step 3. Check switch.

Replace switch (see para 4-94).

Step 4. Check for +12V at emergency master buss.

Refer to "=12 volts not present at emergency master buss" troubleshooting procedure.

Step 5. Check for +12V at circuit breaker #4 on emergency master buss.

Replace breaker (see para 4-99).

Step 6. Check wiring for continuity.

Replace wire (see para 4-9.4).

REAR WARNING STROBES DO NOT ILLUMINATE/FLASH

(Refer to Electrical Wiring Diagrams, Appendix H, Sheet 8 of 16.)

Step 1. Check 10A fuse on trigger unit in left-rear storage compartment.

Replace fuse (see para 4-9.4).

Step 2. Check for +12V at emergency master buss.

Refer to "+12 volts not present at emergency master buss"troubleshooting procedure.

Step 3. Check sealed beam flash unit.

Replace sealed beam unit (see para 4-61).

4-102