TM 5-3810-305-23
0020
MSD-ICE TESTS - Continued
4.
Ensure VTM is off. Attach other end of cable W1 to J1 plug on VIM.
5.
Turn VTM ON. Change TEST SELECT switches to read 66. Push TEST button. Change TEST SELECT
switches to read 99. Push TEST button. VTM will display a series of numbers and then PASS. If display does
not read PASS or C, or an incorrect display appears, refer to TM 9-4910-571-12&P.
6.
Change TEST SELECT switches to read 60. Push TEST button. VTM will display VEH. Refer to vehicle test
card for vehicle identification (VID) number. Change TEST SELECT switches to read VID number. Push TEST
button. VTM will display 28. Change TEST SELECT switches to read 61. Push TEST button. VTM will flash
VII number. Change TEST SELECT switches to read 58. Push TEST button. VTM will display CYL. Change
TEST SELECT switches to read 04. Push TEST button. Change TEST SELECT switches to read 62. Push
TEST button. VTM will flash 04. Change TEST SELECT switches to read 67. Push TEST button. VTM will
flash battery voltage. Refer to test card for battery voltage test limits. If battery voltage falls outside test limits,
service batteries, refer to Battery Assembly and Cables Maintenance (WP 0076).
7.
Start engine. Operate engine at 1,000 to 1,200 rpm. Change TEST SELECT switches to read 01. Push TEST
button. VIM will display PASS. Change TEST SELECT switches to read 67. Push TEST button. VTM will
alternately flash battery charge voltage and engine rpm. During this test engine speed must be maintained
between 1,000 to 1,200 rpm. Refer to test card for battery charge voltage test limits. If battery charge voltage
falls outside test limits, refer to Alternator Charging Low or Unsteady (WP 0015).
8.
With engine speed at idle, charge TEST SELECT switches to read 10. Push TEST button. VTM will display
engine rpm. Refer to test card for engine rpm idle test limits. If engine rpm falls outside test limits, adjust throttle
idle speed, refer to Throttle Control Maintenance, (WP 0052). Accelerate engine to full governed speed, no
load. Refer to test card for engine rpm governed speed, no load, test limits. If engine rpm falls outside limits,
refer to Engine RPM Will Not Reach Rated Speed (WP 0005).
9.
Check vehicle engine oil pressure gage reading. Perform TK engine oil pressure test to verify gage
(refer to test card and TM 9-4910-571-12&P). If vehicle engine oil pressure gage readings fall outside test limits
but TK test is within limits, replace vehicle engine oil pressure gage, refer to Dash Panel Gages and Switches
Maintenance (WP 0066).
10.
If TK test falls outside test limits, inspect vehicle for oil leaks and change oil filter, refer to PMCS, Change
Engine Oil and Oil Filter (WP 0022). Replace lube oil pump, refer to Lube Oil Pump Maintenance
11.
Check air cleaner filter restriction gage. Maximum reading is 25 inches (635 mm) of water. If reading is above
25 inches of water, service air cleaner, refer to PMCS, Service Air Filter (WP 0022).
12.
Shut engine OFF. Wait one minute to allow fuel pressure to bleed off. Change TEST SELECT switches to read
24. Push TEST button until VTM displays CAL, then release button. Refer to test card for fuel supply pressure
test offset limit. If CAL reading is high, break fuel supply line at tee to release line pressure and retest. Start
engine. Accelerate engine to full governed speed. Push TEST button. VTM will display fuel supply pressure.
Refer to test card for fuel supply pressure test limits. If fuel supply pressure falls outside test limits, inspect fuel
supply lines for leaks or pinched tubes. Service fuel filters, refer to Fuel Filters and Head Assembly
Maintenance (WP 0050). Replace fuel pressure transducer, refer to MSD-ICE Wiring Harness Maintenance
(WP 0081). Replace fuel lift pump, refer to Fuel Lift Pump Maintenance (WP 0045).
13.
Change TEST SELECT switches to read 26. Push TEST button. Accelerate engine to full governed speed.
VTM will display either PASS or FAIL. If VTM displays FAIL, service fuel filters, refer to Fuel Filters Head
Assembly Maintenance (WP 0050).
14.
With engine at idle, change TEST SELECT switches to read 27. Push TEST button. Refer to test card for fuel
solenoid voltage test limits. If fuel solenoid voltage falls outside test limits, check wiring at fuel solenoid, refer
to MSD-ICE Wiring Harness Maintenance (WP 0081). If fuel solenoid still falls outside test limits, replace fuel
solenoid, refer to Fuel Injection Pump Maintenance (WP 0044).
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03/15/2011Rel(1.8)root(tswp)wpno(T00025)
