TM 9--2350--292--20--10016 00--3APU CONTROL BOX ENGINE OIL PRESSURE GAUGE READS ZERO WITHAPU ENGINE RUNNING -- CONTINUED0016 00DIs continuity present?CONTINUED FROM STEP CnoyesCONTINUED ON NEXT PAGE1. Disconnect harness 3W704 connector P1 atAPU engine disconnect.2. Disconnect lead 420 from APU oil pressuresending unit.3. Place one multimeter lead on harness 3W704connector P1 socket A and the othermultimeter lead on lead 420 lead connectorsocket. Check for continuity.EIs continuity present?noyes1. Reconnect lead 420 at oil pressure sendingunit.2. Open air intake grilles over batterycompartment (TM 9--2350--292--10).3. Disconnect harness 3W702 connector P1 atbulkhead disconnect.4. Place one multimeter lead on harness 3W702connector P1 socket E. Place the othermultimeter lead on the APU engine disconnectreceptacle J2 pin A. Check for continuity.Repair (WP 0290 00) orreplace (WP 0311 00)harness 3W702. Verifyfault is corrected.Replace APU oil send-ing unit (WP 0631 00).
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