TM 1-1520-238-T-5 8–134 8–66. PILOT AND CPG ENG OIL INDICATORS – DO NOT INDICATE ENGINE 1 8–66 OIL PRESSURE Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68X Armament/Electrical Systems Repairer (2) References: TM 1-1520-238-23 TM 55-2840-248-23 Equipment Conditions: Ref Condition TM 1-1520-238-23 Access provisions – LN1 door opened 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. Check for 10 VAC between P45–6 and P45–7. Is voltage present? YES Go to step 2. NO Go to step 5. 2. Check for open between: J23–16 and P70–22, J23–17 and P70–23. Does open exist? YES Repair open wire. Go to paragraph 8–10. NO Go to step 3. 3. Check for open between: P45–5 and P23–16, P45–7 and P23–17. Does open exist? YES (ABY) Repair open wire. Go to paragraph 8–10. (ABZ) Replace wire harness (TM 1-1520-238-23). NO Go to step 4. 4. Check for open between (M6): J1–22 and J1–1. Does open exist? YES Replace pilot ENG OIL indicator (TM 1-1520-238-23). NO Refer to TM 55-2840-248-23 to troubleshoot engine 1. 5. Check for 10 VAC between P45–6 and ground. Is voltage present? YES Go to step 8. NO Go to step 6. 6. Check for open between J21–32 and P400–6. Does open exist? YES Repair open wire. Go to paragraph 8–10. NO Go to step 7.