TM 9--2350--292--20--1APU CONTROL BOX ENGINE OIL PRESSURE GAUGE READS ZERO WITHAPU ENGINE RUNNING -- CONTINUED0016 00CONTINUED FROM STEP GHIs continuity present?noyes1. Remove APU control box rear panel(WP 0247 00), if not removed.2. Disconnect lead 421 from FUEL SHUT OFFswitch.3. Remove connector from ENGINE OILPRESSURE gauge.4. Place one multimeter lead on lead 421connector socket and the other multimeter leadon pressure gauge lead 420B connectorsocket. Check for continuity.Repair (WP 0290 00) orreplace (WP 0247 00)harness 4W725. Verifyfault is corrected.IIs continuity present?noyesPlace one multimeter lead on lead 420 connectorsocket and the other multimeter lead on control boxreceptacle pin M. Check for continuity.Replace ENGINE OILPRESSURE gauge(WP 0247 00). Verifyfault is corrected.Repair (WP 0290 00) orreplace (WP 0247 00)harness 4W725. Verifyfault is corrected.END OF TASK0016 00--5/6 blank
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