TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM 9-2320-387-24-l 1 2-46. STUICE-R TEST PROCEDURES (Cont’d) RESISTANCE AND CONTINUITY 0 TO 4,500 OHMS TEST ##91 Description: procedure measures resistance in the range of 0 to 4,500 ohms. The VTM is used as an ohm- meter, and test results are always displayed with the decimal point in the right position. Additionaky, any voltage present in the device being tested will adversely affect test results. Make sure the circuit or component being tested is shut off. Test re- quires the use of the TK adapters and transducers. Typical Applications: Control Functions: l Continuity checks l Resistance measurements l Switch and relay functions 01,02, 03,04,06 Test Procedure: 1. Connect test probe cable W2. Attach Pl to J4. 2. Connect the desired test leads to P2. 3. Set TEST SELECT switch to 91. 4. Short leads together. Press and hold TEST button until CAL appears on display. 5. Release TEST button and wait for offset value to appear on display. 6. If offset is within -225 to 225, proceed. If not, go to DCA Troubleshooting Procedure. 7. Press and release TEST button. Observe displayed value. Pre-Test Procedures: Run confidence test. Possible Error Messages: E005 Offset not performed. E022 External voftage detected while measuring resistance. 2-508