TM 5-3805-290-23-1
ELECTRICAL SYSTEM TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0013 00
FUEL TRANSFER PUMP CIRCUIT TEST - CONTINUED
2.
Check fuel transfer pump power relay supply.
a.
Turn engine start switch to ON position (TM 5-3805-290-10).
b.
Measure resistance between these contacts:
(1)
Supply side (A) of fuel transfer pump power relay and NEG battery.
(2)
Positive side (C) of fuel transfer pump relay coil and NEG battery.
c.
Expected Results. Battery voltage is correct.
(1)
If results are OK, proceed to step 3.
(2)
If results are NOT OK, a problem exists in wires between battery and fuel transfer pump. Check fuse and
wires (TM 5-3805-290-10). Replace fuse or wiring harness in question (WP 0169 00 thru WP 0175 00).
Verify repairs have eliminated problem.
3.
Check fuel transfer pump power relay output.
a.
Turn engine start switch to ON position (TM 5-3805-290-10).
b.
Measure voltage between these contacts:
(1)
(B)
(2)
NEG battery
c.
Expected Results. Battery has proper voltage.
(1)
If results are OK, a problem exists in wires. Replace wiring harness in question (WP 0169 00 thru WP
0175 00). Verify repair has eliminated problem (WP 0022 00).
(2)
If results are NOT OK, proceed to step 4.
427-B0723
0013 00-60