13 Forward Drive Function Inoperative - Skyjack SJ3220 Service Manual

Section 4 – Troubleshooting Information
4. Loose or broken wire #24 from Left Steer switch
S7-3 pin to Control Module CM1 pin #P3-9.
5. Loose or broken wire #24A from Control Module
CM1 pin #P5-6 to Left Steer valve coil 4H-24A.
6. Loose or broken wire #00 from Battery (-) to Left
Steer valve coil 4H-24A.
7. Defective Left Steer valve coil 4H-24A.
8. External or internal fault detected by Control
Module CM1.

4.2-13 Forward Drive Function Inoperative

1. Control Module CM1 display is broadcasting an
error message.
2. Loose or broken wire #12 from Lift/Off/Drive
switch S3 to Control Module CM1 pin #P3-6.
3. Lift//Off/Drive switch S3 is set in an incorrect
mode or is defective.
4. Loose or broken wire #59 from Joystick S7 to
Control Module CM1 pin #P1-2.
5. Defective Joystick Enable switch S7-6.
6. Defective Joystick S7.
7. Loose or broken wire #00B from Control Module
CM1 pin #P1-3 to Joystick S7 (0V reference).
223198ABA
110
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.
Check continuity. Test for 24V Output voltage
between wire #24A and wire #02.
Use HMI Diagnostic menu to make sure output P5-6
signal is present.
Replace if defective.
Check continuity. Replace if defective.
Check continuity through coil. Replace if defective.
Check Control Module display screen. Use
Diagnostic Menu to see switch and sensor status.
Correct trouble code as displayed. Replace module
if defective.
Check Control Module display screen and follow
instructions to clear error.
Check continuity. Test for 24V Input voltage
between wire #12 and wire #02.
Use HMI Diagnostic menu to make sure input P3-6
signal is present.
Replace if defective.
Select Drive. Check switch. Replace if defective.
Check continuity. Use HMI Diagnostic menu to
make sure proportional input P1-2 signal is present.
Replace if defective.
Check switch.
Check continuity between wire #08 and wire #08A
on switch.
Replace Joystick if no continuity when operating
switch.
Check joystick. Replace if defective.
Check continuity. Replace if defective.
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732
Electrical System