104
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732223198ABA
Section 4 – Troubleshooting Information Electrical System
16. Defective Joystick switches S7-6 Enable, S7-2
steer right and S7-3 steer left.
Check switches.
Check continuity between wire #08 and wire #08A
(enable signal)
Check continuity between wire #08 and wire #23
(steer right signal)
Check continuity between wire #08 and wire #24
(steer left signal)
Replace Joystick if no continuity when operating
individual switches.
17. Loose or broken wire #08A from Joystick Enable
switch S7-6 to Control Module CM1 pin #P3-12.
(enable signal)
Check continuity. Test for 24V Input voltage
between wire #08A and wire #02.
Use HMI Diagnostic menu to make sure input P3-12
signal is present.
Replace if defective.
18. Loose or broken wire #23 from Joystick S7-2 to
Control Module CM1 pin #P3-8.
(steer right signal)
Check continuity. Test for 24V Input voltage
between wire #23 and wire #02.
Use HMI Diagnostic menu to make sure input P3-8
signal is present.
Replace if defective.
19. Loose or broken wire #24 from Joystick S7-3 to
Control Module CM1 pin #P3-9. (steer left signal)
Check continuity. Test for 24V Input voltage
between wire #24 and wire #02.
Use HMI Diagnostic menu to make sure input P3-9
signal is present.
Replace if defective.
20. Defective Joystick S7 PCB.
Check joystick.
Replace joystick if defective.
21. Loose or broken wire #00B from Control Module
CM1 pin #P1-3 to joystick S7.
(0V reference signal)
Check continuity. Replace if defective.
22. Loose or broken wire #59 from Joystick S7 to
Control Module CM1 pin #P1-2.
(analog output signal)
Check continuity. Use HMI Diagnostic menu to
make sure proportional input P1-2 signal is present.
Replace if defective.
23. Loose or broken wire #08B from Joystick S7 to
Control Module CM1 pin #P1-1. (5V input signal)
Check continuity. Replace if defective.
24. External or internal fault detected by Control
Module CM1
Check Control Module display screen. Use
Diagnostic Menu to see switch and sensor status.
Correct trouble code as displayed. Replace module
if defective.
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