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Electrical System Troubleshooting Section 4 – Troubleshooting Information
7. Loose or broken wire #23 from Mast function
cable connector P2 pin #7 to Steer Right Valve
coil 4H-23.
Check continuity. Replace if defective.
8. Loose or broken wire #02 from Base terminal
block to Steer Right Valve coil 4H-23.
Check continuity. Replace if defective.
4.2-14 Left Steer Inoperative
1. Open or defective Left Steer switch S7-1.
Operate switch.Check continuity between wire
#12B and wire #24 on switch.Replace switch if no
continuity when operating switch.
2. Loose or broken wire #24 from Right Steer
switch S7-1 to Joystick S7 connector pin #1.
Check continuity. Replace if defective.
3. Loose or broken wire #24 from Joystick S7
connector pin #1 to Mast function cable
connector X1 pin #B4..
Check continuity. Replace if defective.
4. Loose or broken wire #24 in Mast function cable
or its connections.
Check continuity between Mast function cable
connector P2 pin #8 and Platform connector X1
pin #B4 on cable. Check for loose or corroded
connections on cable connectors.Replace if wire is
defective.
5. Loose or broken wire #24 from Mast function
cable to Base terminal block.
Check continuity. Replace if defective.
6. Open diode D24. Check diode. Replace if defective.
7. Loose or broken wire #24 from Mast function
cable connector P2 pin #8 to Steer Left Valve coil
4H-24.
Check continuity. Replace if defective.
8. Loose or broken wire #02 from Base terminal
block to Steer Left Valve coil 4H-24.
Check continuity. Replace if defective.