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TM-9-2320-366-20-1 MTV Unit Maintenance Manual M1083 Series - Volume 1 Download

Page 899 of 1824

TM 9-2320-366-20-1 Change 1 2-585 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. VOLTAGE TEST (1) Remove four screws from marker light base. Do not let wires slip through hole into cab structure. If wires slip into cab structure, vehicle will need further disassembly to retrieve wires. (2) Remove nut, lockwasher, terminal lug, and lockwasher from marker light base. Discard lockwashers. (3) Extend base and disconnect connector (Refer to Table 2-11.1. Cab Clearance and Marker Light Connectors) from marker light connector. (4) Remove gasket from marker light base. Discard gasket. (5) Set multimeter to volts DC. (6) Connect positive (+) probe of multimeter to connector (Refer to Table 2-11.1. Cab Clearance and Marker Light Connectors). (7) Connect negative (-) probe of multimeter to ground. (8) Position main light switch to SER DRIVE (TM 9-2320-366-10-1) and note reading on multimeter. Table 2-11.1. Cab Clearance and Marker Light Connectors RH Cab Top Marker Light Marker/ID Light Connector Wire Segment P55 P55 to splice E23 RH Cab Top ID Light P59 P59 to splice E23 P60 to splice E23 P60 Middle Cab Top ID Light LH Cab Top ID Light P57 P57 to splice E23 P50 to splice E23 P50 LH Cab Top Marker Light WARNING 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. (9) If 12 VDC is not present, repair wire 1951 from connector (Refer to Table 2-11.1. Cab Clearance and Marker Light Connectors) (para 2-45) or replace cab clearance and marker lights cable assembly (para 7-66) or M1081 cab clearance and marker lights upper cable assembly (para 7-63). (10) Position main light switch to OFF (TM 9-2320-366-10-1). VOLTAGE TEST (CONT) NOTE