TM 10-3930-669-20 11.  REAR WIPER DOES NOT OPERATE IN LOW (CONT). KNOWN INFO TEST OPTIONS Rear    wiper    operates    in HIGH position. Rear wiper switch OK. Voltage test. STE/ICE-R #89. POSSIBLE PROBLEMS REASON FOR QUESTION Wire 47 faulty. Wiper motor faulty. If    22    to    24    vdc    are    not present, wire 47 is faulty.  If wire   47   is   OK,   rear   wiper motor is faulty. KNOWN INFO TEST OPTIONS Rear    wiper    operates    in HIGH position. Rear wiper switch OK. Wire 47 OK. Wiper motor OK. Verify repair. POSSIBLE PROBLEMS REASON FOR QUESTION If    rear    wiper    operates    in LOW, fault has been corrected. 2-186