14 Reverse Drive Function Inoperative - Skyjack SJ3219 Service Manual

Section 4 – Troubleshooting Information
8. Loose or broken wire #59 from Joystick S7 to
Control Module CM1 pin #P1-2. (analog output
signal)
9. Loose or broken wire #08B from Control Module
CM1 pin #P1-1 to Joystick S7. (5V supply)
10. Loose or broken wire #16 from Control Module
CM1 pin #P5-2 to Forward Drive valve coil 4H-16.
11. Loose or broken wire #00 from Battery (-) to
Forward Drive valve coil 4H-16
12. Loose or broken wire #17 from Control Module
CM1 pin #P5-4 to Brake valve coil 3H-17.
13. Loose or broken wire #00 from Battery (-) to
Brake valve coil 3H-17
14. Defective Forward Drive valve coil 4H-16.
15. Defective Brake valve coil 3H-17.
16. External or internal fault detected by Control
Module CM1.

4.2-14 Reverse 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.
212508ADA
93
Check continuity. Use HMI Diagnostic menu to
make sure proportional input P1-2 signal is present.
Replace if defective.
Check continuity. Replace if defective.
Check continuity. Test for 24V Output voltage
between wire #16 and wire #00.
Use HMI Diagnostic menu to make sure output P5-2
signal is present.
Replace if defective.
Check continuity. Replace if defective.
Check continuity. Test for 24V Output voltage
between wire #17 and wire #00.
Use HMI Diagnostic menu to make sure output P5-4
signal is present.
Replace if defective.
Check continuity. Replace if defective.
Check continuity through coil. 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 #00.
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.
Electrical System
SJ3215, SJ3219