TM 1-1520-238-T-7 Change 5 10–169 10–52. FUEL LOW AFT INDICATORS – ARE NOT LIGHTED 10–52 Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68X Armament/Electrical Systems Repairer One person to assist References: TM 1-1520-238-23 Equipment Conditions: Ref Condition TM 1-1520-238-23 Access provisions – L40 door removed WARNING Turn off power before detaching or attaching wires and connectors. High current 28 VDC or 115 VAC is present. Failure to do so could result in death or serious injury. 1. With power off, check resistance between P401–21 and P401–22. Are 360 to 480 ohms present? YES Go to step 2. NO Go to step 3. 2. Check for open between P18–22 and P401–24. Does open exist? YES Repair open wire. Go to paragraph 10–47. NO Go to step 5. 3. Check resistance between P444–B1 and P444–B2. Are 360 to 480 ohms present? YES Repair open wire between: P401–21 and J915–A6, P401–22 and J915–A7, P915–A6 and P440–A5, P915–A7 and P440–A6. (A402): J16–A5 and TB2–32–B, J16–A6 and TB2–32–F, J31–B1 and TB2–32–A, J31–B2 and TB2–32–E. Go to paragraph 10–47. NO Go to step 4. 4. Check for open between: P444–B1 and P264–8, P444–B2 and P264–9. Does open exist? YES Repair open wire. Go to paragraph 10–47. NO Replace fuel quantity transmitter in aft fuel cell (TM 1-1520-238-23). 5. Check for open between P18–22 and ground. Does open exist? YES Replace SDC (TM 1-1520-238-23). NO Replace pilot caution/warning panel (TM 1-1520-238-23). END OF TASK