What was found
APU FAULT LIGHT LIGHT ILLUMINATED DURING CSS START ATTEMPT. ACFT GROUNDED. C/W FIM TASK 49-30-000-810-803. NO DEFECTS NOTED NO FAULT CODES. ACCOMPLISHED APU BITE IAW FIM TASK 49-60-00-810-801, CURRENT STATUS PAGE SHOWS 49-94304 OIL LEVEL SENSOR SHOWS CIRCUIT FAILURE. ACCOMPLISHED FIM TASK 49-90-00-810-811, NO RESISTANCE READING BETWEEN PIN 1 AND 5 ON OIL LEVEL SENSOR. REPLACED APU OIL LEVEL SENSOR REF AMM TASK 49-94-11, ACCOMPLISHED APU BITE PROCEDURE REF AMM TASK 49-61-00 & RAN APU FOR 30 MINUTES LEAK CK & OPS CK NORMAL.