TM 10-3930-669-20 3.  FUEL GAUGE GIVES NO OR INCORRECT READING (CONT). KNOWN INFO Fuel tank is full. Fuel level sensor faulty. Gauge wire 5 faulty. Gauge ground wire faulty. POSSIBLE PROBLEMS Wire 18 faulty. Fuel level gauge faulty. KNOWN INFO Fuel tank is full. Fuel level sensor OK. Gauge wire 5 OK. Gauge ground wire OK. Wire 18 OK. Fuel level gauge OK. POSSIBLE PROBLEMS TEST OPTIONS Continuity test. STE/ICE-R #91. REASON FOR QUESTION If continuity is not present , wire 18 is faulty. TEST OPTIONS Verify repair. REASON FOR QUESTION If fuel gauge gives correct reading, fault has been corrected. ¬ ¬ 2-142