TM 9-2320-360-20-1 WARNING · Batteries must be disconnected before   tightening   any   connections. Failure to comply may result in injury to personnel. · Remove   all   jewelry   such   as   rings, dog  tags,  bracelets,  etc.    If  jewelry contacts  electrical  terminals  a  direct short may result in an Instant heating of  tools,  damage  to  equipment,  and injury to personnel. WIRE NO. 1719 VOLTAGE TEST NOTE Engine must be running and PTO control switch placed in the on position to perform this test. (1) Place positive (+) probe of multimeter on no 1719 wire at P.T.O.  HI IDLE relay. (2) Place negative (-) probe of multimeter on ground and look for 22-28 volts on multimeter. PTO HI IDLE RELAY TEST NOTE Engine must be running and PTO control switch placed in the on position to perform this test. (1) Place positive (+) probe of multimeter on no. 1719A wire at P.T.O.  HI IDLE relay. (2) Place negative (-) probe of multimeter on ground and look for 22-28 volts on multimeter. CIRCUIT BREAKER TEST (1) Remove eight screws and panel from console. (2) Turn ENGINE switch to ON position. (3) Place positive (+) probe of multimeter on lower terminal of circuit breaker. (4) Place negative (-) probe of multimeter on ground and look. for 22-28 volts on multimeter. (5) Turn ENGINE switch to OFF position. Change 2  2-691