TM 1-1520-238-T-5
8–136
8–67.
PILOT AND CPG ENG OIL INDICATORS – DO NOT INDICATE ENGINE 2
8–67
OIL PRESSURE
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer (2)
References:
TM 1-1520-238-23
TM 55-2840-248-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Access provisions –
RN1 door opened
WARNING
Turn off power before detaching or
attaching wires and connectors. High
current 28 VDC or 115 VAC is present.
Failure to do so could result in death or
serious injury.
1. Check for 10 VAC between P46–6 and P46–7.
Is voltage present?
YES
Go to step 2.
NO
Go to step 5.
2. Check for open between J24–16 and P70–19.
Does open exist?
YES
Repair open wire.
Go to paragraph 8–10.
NO
Go to step 3.
3. Check for open between:
P46–5 and P24–16,
P46–7 and P24–17.
Does open exist?
YES
(ABY) Repair open wire.
Go to paragraph 8–10.
(ABZ) Replace wire harness
(TM 1-1520-238-23).
NO
Go to step 4.
4. Check for open between (M6):
J1–22 and J1–1.
Does open exist?
YES
Replace pilot ENG OIL indicator
(TM 1-1520-238-23).
NO
Refer to TM 55-2840-248-23 to
troubleshoot engine 1.
5. Check for 10 VAC between P46–6 and ground.
Is voltage present?
YES
Go to step 8.
NO
Go to step 6.
6. Check for open between J22–32 and P400–14.
Does open exist?
YES
Repair open wire.
Go to paragraph 8–10.
NO
Go to step 7.
7. Check for open between P22–32 and P46–6.
Does open exist?
YES
(ABY) Repair open wire.
Go to paragraph 8–10.
(ABZ) Replace wire harness
(TM 1-1520-238-23).
NO
Replace SDC
(TM 1-1520-238-23).
