Starter Relay Faulty.
Have assistant turn and hold engine start switch to START (full right) position (TM 5-3895-379-10)
for not more than 30 seconds.
Touch positive (+) probe of multimeter to (wire 306-GN) of starter relay.
If 24 to 28 VDC are not present at start relay output, go to next malfunction.
If 24 to 28 VDC are present at (wire 306-GN), replace starter relay (WP 0153).
Figure 7. Starter Relay Wiring.