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229042ABASJ46 AJ+, SJ46 AJ, SJ51 AJ
Electrical System - CE & AS Section 4 – Troubleshooting Information
6. Loose or broken wire #16 from base plug B pin
#5 to turret harness plug pin #21.
Check continuity. Replace if defective.
7. Loose or broken wire #16 or #02 from turret
harness plug to forward drive valve 3H-16.
Check continuity. Replace if defective.
8. Defective forward drive valve coil 3H-16. Check continuity and resistance through coil.
Replace if defective.
No Reverse Drive
1. No output on “D” when forward is selected on
drive joystick A2.
See drive joystick test procedure in section 5.
2. Loose or broken wire ”D-signal” from drive
joystick A2 to valve driver pin #27.
Check continuity. Replace if defective.
3. No output from valve driver pin #23 to wire #15. Check pin #23 for minimum 2 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
4. Loose or broken wire #15 from valve driver pin
#23 to plug B pin #4 in platform control console.
Check continuity. Replace if defective.
5. Loose or broken wire #15 in cable B or its
connectors.
Check for continuity between pins #4 on cable B.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
6. Loose or broken wire #15 from base plug B pin
#4 to turret harness plug pin #20.
Check continuity. Replace if defective.
7. Loose or broken wire #15 or #02 from turret
harness plug to reverse drive valve 3H-15.
Check continuity. Replace if defective.
8. Defective reverse drive valve coil 3H-15. Check continuity and resistance through coil.
Replace if defective.
No Left Steer
NOTE
This function times out after 15 seconds when operating this function only.
1. Loose or broken wire #24 from drive joystick A2
to valve driver pin #17.
Check continuity. Replace if defective.
2. No output from valve driver pin #4 to wire #24A. Check pin #4 for 12 volts. If no voltage present
with foot on footswitch check section 5 for OCM
pin voltage reference.
3. Loose or broken wire #24A from valve driver pin
#4 to plug A pin #10 in platform control console.
Check continuity. Replace if defective.
4. Loose or broken wire #24A in boom cable A or
its connectors.
Check for continuity between pins #10 on cable A.
Check for loose or corroded connections on cable
connectors. Replace if wire is defective.
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