TM 5-3805-290-23-1
ELECTRICAL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0013 00
FUEL INJECTION PUMP CIRCUIT TEST - CONTINUED
7.
Check VLPM located above engine ECM.
a.
Check 30 A auxiliary circuit breaker to see if it has been tripped (TM 5-3805-290-10).
N OT E
Use this test to verify VLPM has correct resistance. Also use this procedure if there is problem with tripped
auxiliary breaker. A faulty VLPM may be cause of problem.
b.
Disconnect VLPM connector.
c.
Measure resistance between 1 (+) Batt Machine and 2 (+) Batt Pump of VLPM.
d.
Measure resistance between 3 Ground Pump and 4 (-) Batt Pump of VLPM.
e.
Expected Results. Resistance is less than 1 Ohm between 1 (+) Batt Machine and 2 (+) Batt Pump. Resistance is
less than 1 Ohm between 3 Ground Pump and 4 (-) Batt Pump. Resistance is greater than 10 Ohm between 2 (+)
Batt Pump and 3 Ground Pump.
N OT E
Resistance between 2 (+) Batt Pump and 3 Ground Pump may differ. This is OK.
427-B0722
(1)
If result is OK, VLPM is functioning properly.
(2)
If result is NOT OK, replace fuel injection pump (WP 0164 00).
f.
Replace VLPM if injection pump is replaced.
0013 00-58
