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Page Title: DDEC HI/IDLE RELAY TEST
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TM 9-2320-360-20-1 WARNING · Batteries must be disconnected before tightening any connections.  Failure to comply may result in injury to personnel. CONTINUITY TEST · Jewelry can catch on equipment and (1) Disconnect wiring from components at each cause injury or short across electrical end of wire. circuit and cause severe burns or (2) Set multimeter to ohms position. electrical shock.  Remove rings, bracelets, watches, necklaces, and any NOTE other jewelry before working around A reading of infinity HET Tractor. indicates an open circuit. (3) Connect multimeter leads to each end of Check ground wire no. 1435 from wire and check multimeter for continuity. DDEC HI IDLE relay for loose connections, damage, and continuity. NOTE A reading of other than infinity indicates a grounded wire. (4) Remove multimeter lead from one end of wire and connect to chassis ground. DDEC HI/IDLE RELAY TEST NOTE Engine must be running, PTO control switch placed in the on position, and engine speed control switches in the HIGH position to perform this test. (1) Place positive (+) probe of multimeter on wire no 510 at DDEC HI IDLE relay. (2) Place negative (-) probe of multimeter on ground and look for voltage on multimeter. (3) Replace DDEC HI IDLE relay (para 7-27) if no voltage is measured on wire no 510. 2-969

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