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 2-46. STUICE-R TEST PROCEDURES (Cont’d) BAlTERY RESISTANCE CHANGE TEST #75 Description: This procedure measures the change of battery resistance. Test requires DCA hookup only. Pre-Test Procedures: Run confidence test. Warm up engine to operating temperature. Turn off all electrical accessories. Typical Applications: Possible Error Messages: Evaluate batteries in Cl engines with VTM powered from batteries of vehicle being tested. EO02 EO05 E008 E013 E020 Transducer not connected. Cffset not performed. VTM does not detect battery voltage. VTM cannot use data received. No first-peak information was detected by the VTM. VTM cannot calculate result because current is over current probe’s range. Test Procedure: 1. 2. 3. 4. 5. 6. 7. 8. Disconnect fuel solenoid wire 54A to prevent starting. Make sure all vehicle accessories are off. Set TEST SELECT switches to 75. Press and hold TEST button until CAL appears on display. Release TEST button and wait for offset value to appear on display. If offset is within the -150 to 150 range, proceed. If not, go to DCA Troubleshooting Procedure. Press and release TEST button. When GO appears on display, engage starter for 2 seconds or until one of the following appears on the display: OFF .9.9.9.9 A number An error message Observe displayed value (milliohms/seconds). The limit is 50 milliohms per battery pair. A lower number is better than a higher one. E021 NOTES: If .9.9.9.9 is displayed, the battery resis- tance change value is beyond the range of the VTM and cannot be measured with the VTM. If E013 is displayed, check battery connections and correct as necessary. Repeat Step 6. If EO13 persists after 3 tests, VTM cannot perform test. 2-504