154
229042ABA SJ46 AJ+, SJ46 AJ, SJ51 AJ
Section 4 – Troubleshooting Information Electrical System - CE & AS
No Jib Down
1. Loose or broken wire #10A from ignition/ pump
switch S5 to jib switch S17.
Check continuity. Replace if defective
2. Defective jib down switch S17. Check continuity through switch while activating jib
down function between wires #10A and #34. If no
continuity found, replace switch.
3. Open or defective diode D34. Check diode. Replace if defective.
4. Loose or broken wire #34A from diode D34 to
main harness plug pin #11.
Check continuity. Replace if defective
5. Loose or broken wire #34A from main harness
plug pin #11 to jib enable valve 2H-34A.
Check continuity. Replace if defective
6. Loose or broken wire #02 from main harness
plug to jib enable valve 2H-34A.
Check continuity. Replace if defective
7. Defective jib enable valve 2H-34A. Check continuity and resistance through coil.
Replace if defective.
8. Loose or broken wire #34 from jib down switch
S17 to base connector plug A pin #16.
Check continuity. Replace if defective
9. Loose or broken wire #34 in boom cable A or its
connectors.
Check for continuity between pins #16 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
10. Loose or broken wire #34 from plug A pin #16 to
platform terminal block.
Check continuity. Replace if defective
11. Loose or broken wire #34 from platform terminal
block to jib down valve 4H-34.
Check continuity. Replace if defective
12. Loose or broken wire #02 from platform terminal
block to jib down valve 4H-34.
Check continuity. Replace if defective
13. Defective jib down valve coil 4H-34. Check continuity and resistance through coil.
Replace if defective.
No Manual Platform Level Up
1. Loose or broken wire #10A from ignition/ pump
switch S5 to platform level switch S15.
Check continuity. Replace if defective
2. Defective platform level switch S15. Check continuity through switch while activating
level up function between wires #10A and #41. If
no continuity found replace switch.
3. Loose or broken wire #41 from platform level
switch S15 to base terminal block.
Check continuity. Replace if defective
4. Loose or broken wire #41 from base terminal
block to main harness pin plug pin#16.
Check continuity. Replace if defective
5. Loose or broken wire #41 from main harness pin
plug pin#16 platform level up valve 4H-41.
Check continuity. Replace if defective
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