Skyjack SJ85 AJ Service Manual

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SJ85 AJ 229044ADA
Electrical System Section 4 – Troubleshooting Information
5. If telematics device is not installed: loose, broken
or missing Jumper JMPR1 from 57DCR pin 85 to
ground 00.
Check continuity. Replace if defective or missing.
6. Loose or broken wire 57D from telematics pin 9
to 57DCR pin 85.
Check continuity. Replace if defective.
7. Missing output from telematics pin 9. Check for ground on pin 9. If no ground, contact
the machine owner.
8. Defective relay 57DCR. Check relay. Replace if defective.
9. Loose or broken wire 57B from 57DCR pin 87 to
engine starter contactor coil.
Check continuity. Replace if defective.
10. Defective telematics module. Check telematics assembly; repair or replace as
required.
11. Loose or broken wire #14 from boom switch S12
to base terminal block.
Check continuity. Replace if defective.
12. Loose or broken wire #14 from base terminal
block to turret harness plug pin #4.
Check continuity. Replace if defective.
13. Loose or broken wire #14 from turret harness
plug pin #4 to boom up valve 4H-14.
Check continuity. Replace if defective.
14. Loose or broken wire #02 from turret harness
plug to boom up valve 4H-14.
Check continuity. Replace if defective.
15. Defective boom up coil 4H-14. Check continuity and resistance through coil.
Replace if defective.
4.2-4 No Boom Up or Down
No Boom Up from Platform Console:
1. Loose or broken wire #04 from platform terminal
block to joystick controller A1.
Check continuity. Replace if defective.
2. Loose or broken wire #02 from platform terminal
block to joystick controller A1.
Check continuity. Replace if defective.
3. No output on y-axis of joystick controller A1. Refer to the joystick test procedure in section 5.
4. Loose or broken wire “Y” from joystick controller
to J3 pin #16 of valve driver.
Check continuity. Replace if defective.
5. No output on J3 pin #24 of the valve driver to
wire #20B.
Check for 12 volts. If no voltage present with foot
on footswitch check section 5 for OCM pin voltage
reference.
6. No output on J2 pin #5 of the valve driver to wire
#14.
Check for a minimum 3.5 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
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Skyjack SJ85 AJ Specifications

General

Brand	Skyjack
Model	SJ85 AJ
Category	Boom Lifts
Language	English