TM
55-1730-229-12
AG
320A0-OMM-000
TO
35C2-3-473-1
TM
1730-12/1
Table 4-2.
Organizational Troubleshooting (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
88.
(continued)
f.
Lower control panel and disconnect engine harness connector
P2 from ECU. Check engine harness for continuity from P2-C
to P6-C, and from P2-D to P6-A (see FO-3, sheet 2). Replace
defective wiring or notify maintenance supervisor.
If wiring is good, reconnect engine harness connectors P2 and
g.
P6. Lockwire connector P6.
LOW OIL PRESSURE SWITCH MALFUNCTION.
89.
If the low oil pressure is suspected of malfunctioning, teat the switch as
follows:
a. Disconnect battery.
b.
Remove engine and hydraulic access covers (paragraph 4-15).
c. Cut and remove lockwire from low oil pressure switch
electrical connector (6, figure 4-31).
d.
Check resistance between pins A and B of low oil pressure
switch. Reading should be 0 ohms. If resistance is greater
than 1 ohm, replace switch (paragraph 4-41).
NOTE
The low oil pressure switch should remain closed until engine
oil pressure exceeds 31 psig. Above 31 psig, the switch should
open.
HIGH OIL TEMPERATURE SWITCH MALFUNCTION.
90.
If a high oil temperature (HOT) switch malfunction is suspected, teat the
switch and engine harness as follows (see FO-3 sheet 2):
a. Disconnect battery and lower control panel (paragraph
4-24 .a).
b.
Disconnect engine harness connector P2 from ECU.
