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SJ63 AJ+, SJ63 AJ 229043AAA
Electrical System - CE & AS Section 4 – Troubleshooting Information
4.3-15 No Boom Down from the Base Control Console
1. Loose or broken wire #10C from resistor R1 to
boom down switch S12.
Check continuity. Replace if defective.
2. Defective boom switch S12. Check continuity through switch while activating
down function between wires #10C and #13. If no
continuity found, replace switch.
3. Loose or broken wire #13 from boom down
switch S12 to base terminal block.
Check continuity. Replace if defective.
4. Loose or broken wire #13 from base terminal
block to main harness plug pin #1.
Check continuity. Replace if defective.
5. Loose or broken wire #13 from main harness
plug pin #1 to boom down valve 5H-13.
Check continuity. Replace if defective.
6. Loose or broken wire #02 from main harness
plug to boom down valve 5H-13.
Check continuity. Replace if defective.
7. Defective boom down coil 5H-13. Check continuity and resistance through coil.
Replace if defective.
4.3-16 No Riser Up from the Base Control Console
1. Loose or broken wire #10A from resistor R1 to
riser switch S25.
Check continuity. Replace if defective.
2. Defective riser switch S25. Check continuity through switch while activating
up function between wires #10A and #31. Replace
switch if no continuity.
3. Loose or broken wire #31 from riser switch S25
to base terminal block.
Check continuity. Replace if defective.
4. Loose or broken wire #31 from base terminal
block to main harness plug pin #8.
Check continuity. Replace if defective.
5. Loose or broken wire #31 from main harness
plug pin #8 to riser up valve 5H-31.
Check continuity. Replace if defective.
6. Loose or broken wire #02 from main harness
plug to riser up valve 5H-31.
Check continuity. Replace if defective.
7. Defective boom up coil 5H-31. Check continuity and resistance through coil.
Replace if defective.
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