TM-9-2320-365-20-2 LMTV Unit Maintenance Manual M1078 Series - Volume 2 Download
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WARNING Wear appropriate eye protection when working under vehicle due to the possibility of falling debris. Failure to comply may result in injury to personnel. 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 (1) Disconnect transmission engine speed sensor connector from transmission engine speed sensor. (2) Set multimeter to ohms. (3) Connect positive (+) probe of multimeter to terminal A of transmission engine speed sensor. (4) Connect negative (-) probe of multimeter to terminal B of transmission engine speed sensor and note reading on multimeter. NOTE A good transmission engine 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). (5) If resistance is not 200-400 ohms, replace transmission engine speed sensor (para 7-43). (6) Connect transmission engine speed sensor connector to transmission engine speed sensor. Change 1 2-1365 Loose or dirty connectors may cause intermittent loss of power to transmission ECU and diagnostic codes to be logged. Ensure that all connectors are clean and tight before performing troubleshooting. Failure to comply may result in incorrect test results. TM 9-2320-365-20-2