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Section 4 – Troubleshooting Information
5. Loose or broken wire #5 in cable B or its
connectors.
6. Loose or broken wire #16 from base plug B pin
#5 to turret harness plug pin #21.
7. Loose or broken wire #16 or #02 from turret
harness plug to forward drive valve 3H-16.
8. Defective forward drive valve coil 3H-16.
No Reverse Drive
1. No output on "D" when forward is selected on
drive joystick A2.
2. Loose or broken wire "D-signal" from drive
joystick A2 to valve driver pin #27.
3. No output from valve driver pin #23 to wire #15.
4. Loose or broken wire #15 from valve driver pin
#23 to plug B pin #4 in platform control console.
5. Loose or broken wire #15 in cable B or its
connectors.
6. Loose or broken wire #15 from base plug B pin
#4 to turret harness plug pin #20.
7. Loose or broken wire #15 or #02 from turret
harness plug to reverse drive valve 3H-15.
8. Defective reverse drive valve coil 3H-15.
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 platform terminal block.
2. Open or defective diode D24 in platform terminal
block.
3. Loose or broken wire #24 from platform terminal
block to relay 17ACR1.
4. Defective N/C contacts in relay 17ACR1.
229040ABA
140
Check for continuity between pins #5 on cable B.
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 and resistance through coil. Re-
place if defective.
See drive joystick test procedure in section 5.
Check continuity. Replace if defective.
Check pin #23 for minimum 2 volts. If no voltage
present with foot on footswitch check section 5 for
OCM pin voltage reference.
Check continuity. Replace if defective.
Check for continuity between pins #4 on cable B.
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 and resistance through coil. Re-
place if defective.
Check continuity. Replace if defective.
Check diode. Replace if defective.
Check continuity. Replace if defective.
Check relay. Replace if defective.
Electrical System
SJ82 T, SJ86 T
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