TM 1-1520-238-T-4
6–131
6–59.
OIL PSI NOSE GRBX 2 INDICATOR – IS LIGHTED WHEN HOD DISPLAYS NORMAL
6–59
NGB 2 OIL PRESSURE (cont)
7. Check for open between:
P672–85 and P672–84,
P672–85 and P672–99,
P672–85 and P672–100.
Does open exist?
YES
Go to step 8.
NO
Go to step 9.
8. Check for open between:
P60–L and P60–M,
P60–L and P60–P,
P60–L and P60–R.
Does open exist?
YES
Replace NGB 2 oil pressure
transducer (TM 1-1520-238-23).
NO
Repair open wire between:
P60–L and P672–85,
P60–M and P672–84,
P60–P and P672–99,
P60–R and P672–100. Go to
paragraph 6–13.
9. Detach P672. Check for short between:
J60–L and ground,
J60–M and ground,
J60–L and ground,
J60–R and ground.
Does short exist?
YES
Repair shorted wire.
Go to paragraph 6–13.
NO
Go to step 10.
10. Check for short between:
P60–L and P60–M,
P60–M and P60–P,
P60–M and P60–R.
Does short exist?
YES
Replace NGB 2 oil pressure
transducer (TM 1-1520-238-23).
NO
Refer to TM 9-1230-476-20-2 to
troubleshoot multiplex
subsystem.
END OF TASK
