TM-9-2320-365-20-2 LMTV Unit Maintenance Manual M1078 Series - Volume 2 Download
Page 325 of 1432
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 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. 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 output speed sensor connector from transfer case connector. (2) Set multimeter to ohms. (3) Connect positive (+) probe of multimeter to pin C of transfer case connector. NOTE A good output 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 pin D of transfer case connector and note reading on multimeter. (5) If 200-400 ohms resistance is not present, notify DS Maintenance. (6) Connect output speed sensor connector to transfer case connector. Change 1 2-1379 TM 9-2320-365-20-2