13 Direction Sensing Inoperative - Skyjack SJ85 AJ Service Manual

Section 4 – Troubleshooting Information
5. Loose or broken wire #23A from base terminal
block to turret harness plug pin #6.
6. Loose or broken wire #24A or #02 from turret
harness plug to left steer valve 4H-23A.
7. Defective left steer valve coil 4H-23A.
Brake will not Release:
1. No output from valve driver J3 pin #24 to wire
#26.
2. Loose or broken wire 26 from valve driver J3 pin
#24 to plug B pin #5.
3. Loose or broken wire #16 in cable A or its
connectors.
4. Loose or broken wire #26 from base plug A pin
#11 to turret harness connector pin #6.
5. Loose or broken wire #26 from turret harness
connector pin #6 to 3H-26 Brake coil.
6. Loose or broken wire #02 wire from 3H-26 Brake
coil to ground.
7. Defective forward coil 3H-26.

4.2-13 Direction Sensing Inoperative

1. Loose or broken wire #09 from base terminal
block to limit switch LS1.
2. Open or defective limit switch LS1.
3. Loose or broken wire #17 from limit switch LS1
to base terminal block.
4. Loose or broken wire #17 from base terminal
block to base plug B pin #6.
5. Loose or broken wire #17 in boom cable B or its
connectors.
6. Loose or broken wire #17 from base plug B
pin #6 to valve driver connector J2 pin #25 in
platform control console.
7. Defective valve driver channel input for direction
sense enable.
229044ADA
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Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check continuity and resistance through coil.
Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check for continuity between pins #11 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check continuity and resistance through coil.
Replace if defective.
Check continuity. Replace if defective.
Adjust limit switch if required. Check continuity
through switch. Replace if defective.
Check continuity. Replace if defective.
Check continuity. Replace if defective.
Check for continuity between pins #6 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
Check continuity. Replace if defective.
Replace if Defective.
Electrical System
SJ85 AJ