TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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TM g-2320-387-24-1 2-46. STE/lCE-R TEST PROCEDURES (Cont’d) CURRENT FIRST PEAK TEST #72 Description: Pre-Test Procedures: This procedure measures the overall condition of the complete starting system. Test requires DCA hookup only. Run confidence test. Warm up engine to operating temperature. Turn off all electrical accessories. Typical Applications: Check condition of starting system on Cl engines with VTM being powered from battery of vehicle tested. Test Procedure: 1. Disconnect fuel solenoid wire 54A to prevent starting. 2. Make sure all vehicle accessories are off. 3. Set TEST SELECT switches to 72. 4. Press and hold TEST button until CAL appears on display. 5. Release TEST button and wait for offset value to appear on display. If offset is within the range -150 to 150, proceed. If not, go to DCA Troubleshooting Procedure. 6. Press and release TEST button. 7. When GO appears on display, crank engine for 2 seconds or until one of the following appears on the display: OFF .9.9.9.9 A number An error message 8. Observe displayed value (amps). Possible Error Messages: E002 E005 E008 E013 E020 E021 Transducer not connected. Offset 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. NOTES: 11 .9.9.9.9 is displayed, current first-peak was too high and cannot be measured with VTM. If E013 is displayed, check battery connections and correct as necessary. Repeat step 6. If E013 persists after 3 tests, VTM cannot perform test. 2-501