TM 1-1520-238-T-5
8–143
8–72.
PILOT AND CPG TORQUE INDICATORS – DO NOT INDICATE ENGINE 2 TORQUE
8–72
Tools:
Nomenclature
Part Number
Tool Kit, Electrical
SC518099CLA06
Repairer’s
Multimeter, Digital
AN/PSM-45
Personnel Required:
68X
Armament/Electrical Systems Repairer
References:
TM 1-1520-238-23
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 open between:
P42–10 and P66–19,
P42–11 and P66–20.
Does open exist?
YES
Go to step 8.
NO
Go to step 2.
2. Detach P682, P74, P66, and P49.
Check for short between:
P42–10 and ground,
P42–11 and ground.
Does short exist?
YES
Go to step 3.
NO
Replace engine 2 torque sensor
(TM 1-1520-238-23).
3. Detach P405 and P469.
Check for short between:
P42–10 and ground,
P42–11 and ground.
Does short exist?
YES
Go to step 7.
NO
Go to step 4.
4. Detach P405 and P469.
Check for short between (A326):
J19–B7 and ground,
J19–B8 and ground.
Does short exist?
YES
Go to step 6.
NO
Go to step 5.
5. Check for short between:
P405–B10 and ground,
P405–B11 and ground,
P405–B13 and ground,
P405–B14 and ground.
Does short exist?
YES
Repair shorted wire between:
P405–B10 and P74–19,
P405–B11 and P74–20,
P405–B13 and P66–20,
P405–B4 and P66–19,
P449–B4 and P682–118,
P449–B5 and P682–117,
P449–B4 and P469–A4,
P449–B5 and P469–A5.
Go to paragraph 8–10.
NO
Repair shorted wire between:
P405–A19 and P49–30,
P405–A20 and P49–31.
Go to paragraph 8–10.
