TM 10-3930-669-20 KNOWN INFO TEST OPTIONS Oil level OK. Engine OK. Oil pressure gauge OK. Voltage test. STE/ICE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Gauge wire 5 faulty. Gauge ground wire faulty. Wire 16 faulty. Oil pressure sensor faulty. If  22  to  24  vdc  are  not  present, gauge wire 5 is faulty. KNOWN INFO TEST OPTIONS Oil level OK. Engine OK. Oil pressure gauge OK. Gauge wire 5 OK. Continuity test. STE/ICE-R #91. POSSIBLE PROBLEMS REASON FOR QUESTION Gauge ground wire faulty. Wire 16 faulty. Oil pressure sensor faulty. If continuity is not present, gauge ground wire is faulty. ¬ ¬ 2-62