TM 5-3895-373-20REFERENCE INFORMATIONBATTERY/STARTER CIRCUITSTE/ICE-R Test 72 provides a good overall assessment of complete starting system. Tests condition of thestarting circuit and battery’s ability to deliver starting current. Peak currents less than nominal indicate relativelyhigh resistance caused by poor connections, faulty wiring, or low battery voltage.STARTER FIRST PEAK CURRENT TEST - STE/ICE-R TEST 72DESCRIPTIONTEST PROCEDURESMeasures current through battery ground path shunt at themoment the starter is engaged and prior to armature movement.1.Set ENGINE CRANK switch on DCA housing to TESTposition to prevent starting.DCA Test Pins: X and Y2.Make sure all accessory drive functions are turned OFF.Measurement Range: 0 to 1000 amps3.Set TEST SELECT switches to 72.4.Press and hold TEST button until CAL appears on displayPRE-TEST PROCEDURES.Run confidence test per TM 9-4910-571-12&P.5.Release TEST button and wait for offset value to appearon display. If offset value is within -150 to +150 amps,POSSIBLE ERROR MESSAGESproceed. If not, refer to DCA troubleshooting in TM 9-E005Offset not performed. 4910-571-12&P.E008VTM does not detect battery voltage.6.Press and release TEST button.E013VTM cannot use data received.7.When GO appears on display, engage starter forE020No first peak information was detected by the2 seconds or until one of the following appears on theVTM.display:OFF.9.9.9.9A valid current readingAn error message8.Observe displayed value. Displayed values are in amperes(amps). Expected minimum value is 600 amps, nominal.NOTE:If .9.9.9.9 is displayed, current first peak is more than 3000 amp and cannot be measured. It E013 is displayed, thencheck battery connections and correct as necessary. Repeat test procedure. If E013 persists after 3 tests, VTM cannotperform test.Reference electrical schematic at back ofmanual for complete circuit wiring.2-119
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