4-10. GENERAL. (cont)
MARINE CORPS TM 6115-12/7
N A VY
Table 4-3. Organizational Troubleshooting - Continued
TEST OR INSPECTION
Disconnect P13 from speed sensor and measure
resistance between pins of speed sensor and between each
and case of speed sensor.
If resistance is less than 1.8k ohms or greater than
ohms or if resistance between either pin and case is
than 200k ohms, replace speed sensor (paragraph 4-65).
To prevent injury, ensure that
If resistance is OK.
disconnect batterv cable
Visually inspect and perform continuity checks
on wires U150A18 and U151A18. Replace if necessary.
Open exhaust door and check for heat, an indication that engine
has had ignition.
If no heat, go to Step 5.
If heat present,
replace EECM (paragraph 4-64) with known
good unit and attempt restart.
If problem still exists,
refer engine to next higher level of maintenance.
Check for odor of fuel and fuel sprayed in exhaust duct.
If no strong fuel odor or sign of fuel, go to Step 6.
If fuel or fuel odor is present, perform complete test of
ignition system (paragraph 4-45).
Place MASTER SWITCH in RUN position and verify that transfer
pump is running. There is
the pump is running.
If pump is not running,
If pump is running,
a very distinct clicking noise when
go to Step 7.
service and test pump (paragraph
4-37). If pump tests OK, go to Step 9.