TM 5-2420-230-24-1
Table 3-6. Unit Troubleshooting Table. -- Continued
Malfunction
Test or Inspection
Corrective Action
RIGHT JOYSTICK INOPERABLE. -- CONTINUED
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry contacts battery terminal, a
direct short may result in instant heating of tools, damage to equipment, and injury or death to
personnel.
Step 5.
Check for continuity between the following pins of electrical connector HX10 (1) and electrical connector
HJ1 (3) (refer to FO-3):
RH JOYSTICK
ECU
ELECTRICAL
ELECTRICAL
CONNECTOR HX10
CONNECTOR HJ1
SIGNAL PATH NAME
Pin U
to
Pin 1
Right joystick voltage (through SP-H3)
Pin T
to
Pin 25
Right center joystick input
Pin N
to
Pin 1
Right joystick voltage (through SP-H3)
Pin M
to
Pin 35
Right joystick ground
Pin J
to
Pin 6
Arm boom potentiometer signal
Pin G
to
Pin 5
Bucket potentiometer signal
Pin F
to
Pin 29
Return-to-dig button signal
Pin E
to
Pin 37
Return-to-position button signal
Pin D
to
Pin 4
4-in-1 potentiometer signal
Pin A
to
Pin 12
Transmission cutout signal
If there is continuity, replace right joystick (2) (Para 12-24).
If there is not continuity, replace wire harness (Para 12-27).
Change 1
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