TM 10-3930-669-20 WARNING Remove all jewelry such as rings, dog tags, bracelets, etc.  If jewelry contacts battery terminal, a direct short may result in instant heating of tools, damage to equipment, and injury or death to personnel. VOLTAGE TEST (1)   Remove  engine  ventilation  panel  (Para 6-2). (2)   Disconnect    connector    P15    from    belt switch connector. (3)   Set  multimeter  select  switch  to  VOLTS DC. (4)   Connect  positive  (+)  multimeter  lead  to connector P15, terminal 1. (5)   Connect negative (-) multimeter lead to a known good ground. (6)   Set     MAIN     POWER     switch     to     ON position (TM 10-3930-669-10). (7)   Set   engine   switch   to   ignition   position (TM 10-3930-669-10). (a)   If    there    are    not    22    to    24    vdc present,  perform  Steps  (8)  and  (9) below     and     repair     wire     6     (see schematic Appendix F). (b)   If  there  are  22  to  24  vdc  present, wire 6 is OK. (8)   Set engine switch to off position. (9)   Set    MAIN    POWER    switch    to    OFF position. 2-245