TM 5-3895-373-20
REFERENCE INFORMATION
BATTERY/STARTER CIRCUIT
STE/ICE-R Test 72 provides a good overall assessment of complete starting system. Tests condition of the
starting circuit and battery’s ability to deliver starting current. Peak currents less than nominal indicate relatively
high resistance caused by poor connections, faulty wiring, or low battery voltage.
STARTER FIRST PEAK CURRENT TEST - STE/ICE-R TEST 72
DESCRIPTION
TEST PROCEDURES
Measures current through battery ground path shunt at the
moment the starter is engaged and prior to armature movement.
1.
Set ENGINE CRANK switch on DCA housing to TEST
position to prevent starting.
DCA Test Pins: X and Y
2.
Make sure all accessory drive functions are turned OFF.
Measurement Range: 0 to 1000 amps
3.
Set TEST SELECT switches to 72.
4.
Press and hold TEST button until CAL appears on display
PRE-TEST PROCEDURES
.
Run confidence test per TM 9-4910-571-12&P.
5.
Release TEST button and wait for offset value to appear
on display. If offset value is within -150 to +150 amps,
POSSIBLE ERROR MESSAGES
proceed. If not, refer to DCA troubleshooting in TM 9-
E005
Offset not performed. 4910-571-12&P.
E008
VTM does not detect battery voltage.
6.
Press and release TEST button.
E013
VTM cannot use data received.
7.
When GO appears on display, engage starter for
E020
No first peak information was detected by the
2 seconds or until one of the following appears on the
VTM.
display:
OFF
.9.9.9.9
A valid current reading
An error message
8.
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, then
check battery connections and correct as necessary. Repeat test procedure. If E013 persists after 3 tests, VTM cannot
perform test.
Reference electrical schematic at back of
manual for complete circuit wiring.
2-119
