TM 9-2320-360-20-1 WARNING Jewelry can catch on equipment and cause injury or short across electrical circuit and cause severe burns or electrical shock Remove rings, bracelets, watches, necklaces, and any other jewelry before working around HET Tractor. RELEASE VALVE VOLTAGE TEST (1) Disconnect release valve connector from power manifold (2) Place positive (+) probe of multimeter on release valve connector, position 2 (3) Place negative (-) probe of multimeter on known good ground. (4) Turn engine switch to ON position (TM 9-2320-360-10) (5) Move CTIS switch to ON position (TM 9-2320-360-10) (6) Press START button and look for 22-28 volts on multimeter (7) Turn engine switch to OFF position (TM 9-2320-360-10). (8) Connect release valve connector to power manifold SOLENOID COIL TEST (1) Remove connector from release valve solenoid (2) Place positive probe (+) of multimeter on release valve solenoid position 1. (3) Place negative probe (-) of multimeter on release valve solenoid position 2 and look for 50-60 ohms on multimeter (4) Install connector on release valve solenoid POWER MANIFOLD GROUND CIRCUIT CONTINUITY TEST (1) Disconnect release valve connector from power manifold. (2) Place positive (+) probe of multimeter in release valve connector, position 1. (3) Place negative (-) probe of multimeter on known good ground and check multimeter for continuity. (4) Connect release valve connector to power manifold. Change 1  2-851.4