Skyjack SJ4732 - Page 116

116
SJ3220, SJ3226, SJ4720, SJ4726, SJ4732223198ABA
Section 4 – Troubleshooting Information Electrical System
5. Open or defective Deck Ext/Ret switch S11.
Check switch.
Check continuity between wire #08D and wire #26
(Deck Extend selected)
Check continuity between wire #08D and wire #27
(Deck Retract selected)
Replace if no continuity when operating switch.
6. Loose or broken wire #26 from Deck Ext/Ret
switch S11 to Control Module CM1 pin #P4-8.
Check continuity when operating switch for Extend.
Test for 24V Input voltage between wire #26 and
wire #02.
Use HMI Diagnostic menu to make sure input P4-8
signal is present.
Replace if defective.
7. Loose or broken wire #27 from Deck Ext/Ret
switch S11 to Control Module CM1 pin #P4-9.
Check continuity when operating switch for Retract.
Test for 24V Input voltage between wire #27 and
wire #02.
Use HMI Diagnostic menu to make sure input P4-9
signal is present.
Replace if defective.
8. Loose or broken wire #26B from Control Module
CM1 pin #P5-7 to Deck Extend valve coil 4H-26
(Deck Extend signal)
Check continuity. Test for 24V Output voltage
between wire #26B and wire #02.
Use HMI Diagnostic menu to make sure output P5-7
signal is present.
Replace if defective.
9. Loose or broken wire #27B from Control Module
CM1 pin #P5-10 to Deck Retract valve coil 4H-27.
(Deck Retract signal)
Check continuity. Test for 24V Output voltage
between wire #27B and wire #02.
Use HMI Diagnostic menu to make sure output
P5-10 signal is present.
Replace if defective.
10. Loose or broken wire #00 from Battery (-) to
Deck Extend valve coil 4H-26.
Check continuity. Replace if defective.
11. Loose or broken wire #00 from Battery (-) to
Deck Retract valve coil 4H-27.
Check continuity. Replace if defective.
12. Defective Deck Extend valve coil 4H-26 and/or
Deck Retract valve coil 4H-27.
Check continuity through coils. Replace if
defective.
13. 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.