TM 5-2420-230-24-1
Table 3-6. Unit Troubleshooting Table. -- Continued
Malfunction
Test or Inspection
Corrective Action
LEFT 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 HX11 (1) and electrical connector
HJ1 (3) (refer to FO-3):
LH JOYSTICK
ECU
ELECTRICAL
ELECTRICAL
CONNECTOR HX11
CONNECTOR HJ1
SIGNAL PATH NAME
Pin A
to
Pin 10
Work selection button
Pin G
to
Pin 7
Swing potentiometer signal
Pin J
to
Pin 8
Dipper potentiometer signal
Pin K
to
Pin 9
Bucket shake signal
Pin M
to
Pin 34
Left joystick ground
Pin N
to
Pin 11
Left joystick voltage (through SP-H2)
Pin T
to
Pin 24
Left center joystick input
Pin U
to
Pin 11
Left joystick voltage (through SP-H2)
If there is continuity, replace left joystick (2) (Para 12-24).
If there is not continuity, replace wire harness (Para 12-27).
Change 1
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