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) Set   multimeter   select   switch   to   VOLTS DC. (2) Connect   positive   (+)   multimeter   lead   to engine  switch  temperature  switch  output terminal. (3) Connect negative (-) multimeter lead to a known good ground. (4) Turn Main power switch to the ON position (TM 10-3930-669-10). (a)   If there are not 22 to 24 vdc present, perform  Step  (5)  below  and  replace engine   temperature   switch   (Para   7- 22). (b)   If   there   are   22   to   24   vdc   present, perform   Step   (5)   below   and   repair wire 71 (see schematic Appendix F). (5) Turn    Main    power    switch    to    the    OFF position. (6) Close right-hand engine access cover (TM 10-3930-669-10). 2-361