TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download
Page 523 of 1824
VOLTAGE TEST CAUTION WARNING 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. Inspect connector pins/sockets for damage, corrosion, and serviceability. Check that connector pins are not pushed back or not capable of making good contact. Remove rings, bracelets, watches, necklaces, and any other jewelry before working around vehicle. Jewelry can catch on equipment and cause injury or short across electrical circuits and cause severe burns or electrical shock. (1) Remove instrument panel for access (para 7-15). (2) Disconnect connector clamp from FRONT BRAKE AIR pressure gage connector. (3) Disconnect connector PX4 from FRONT BRAKE AIR pressure gage connector. (4) Set multimeter to volts DC. (5) Connect positive (+) probe of multimeter to connector PX4 pin 3. (6) Connect negative (-) probe of multimeter to ground. (7) Position master power switch to on (TM 9- 2320-366-10-1). (8) If 24 VDC is not present, repair wire 1546 from connector PX4 pin 3 to connector PX9 pin 3 (para 2-45) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). (9) Position master power switch to off (TM 9- 2320-366-10-1). NOTE TM 9-2320-366-20-1 Change 1 2-334.5