TM-9-2320-365-20-2 LMTV Unit Maintenance Manual M1078 Series - Volume 2 Download
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TM 9-2320-365-20-2 CAUTION Use care when testing electrical connectors. Do not damage connector pins or sockets with multimeter probes. Failure to comply may result in damage to equipment. NOTE Inspect connector pins/sockets for damage, corrosion, and serviceability. Check that connector pins are not pushed back and are capable of making good contact. RESISTANCE TEST Change 1 2-1377 (1) Set multimeter to ohms. (2) Connect positive (+) probe of multimeter to connector P119 pin p. (3) Connect negative (-) probe of multimeter to connector P119 pin r and note reading on multimeter. NOTE A good turbine speed sensor will return a reading of 200-400 ohms resistance as follows: a. 200 ohms at -40°F (-40°C). b. 300 ohms at 68°F (20°C). c. 400 ohms at 230°F (110°C). (4) Connect negative (-) probe of multimeter to all other pins in connector P119 and note reading on multimeter. (5) Connect negative (-) probe of multimeter to ground and note reading on multimeter. (6) If 200-400 ohms resistance is not present in step 4, or continuity is present in step 5 or step 6, notify DS Maintenance. (7) If 200-400 ohms resistance is present in step 3, and continuity is not present in step 5 or step 6, replace WTEC II TEPSS (para 8-2). (8) Connect connector J115 to WTEC II TEPSS. (9) Install instrument panel assembly (para 7-15). (10) Connect connector P119 to connector J119. (11) Position front grille on cab with washer and screw. (12) Position two washers and screws in front grille. (13) Tighten screw to 48-60 lb-in. (5-7 N·m). (14) Tighten two screws to 24 lb-in. (3 N·m). (15) Clear diagnostic codes (para 8-4).