John Deere D130 New starter switch new solenoid How to

Battery Voltage:
- Ensure the battery is fully charged (should read approximately 12.6 volts with a multimeter).
- A weak or dead battery won’t provide enough power to the starter.
Cable Connections:
- Inspect all battery connections, including terminals and ground wires, for corrosion, looseness, or damage.
- Clean connections and tighten as needed.
Ground Connection:
- Ensure the ground cable is securely attached to the frame or engine block.

Switch Functionality:
- Use a multimeter to check if the starter switch is sending voltage to the solenoid when turned to the “start” position.
Safety Switches:
- Verify the safety switches (e.g., seat switch, brake/clutch switch) are functioning properly.
- Bypass them temporarily for testing, if needed, to rule out a faulty safety interlock.

Input and Output Voltage:
- Test the solenoid with a multimeter. Ensure the input terminal receives power from the battery.
- When the starter switch is engaged, check if the solenoid is sending power to the starter motor terminal.
Click Sound:
- Listen for a click when the key is turned to start.
- No click might indicate a faulty solenoid (even if new) or an issue with the activation circuit.

Direct Power Test:
- Use jumper cables to connect the starter motor directly to the battery.
- If the motor engages, it’s functioning correctly, and the problem lies in the circuit.
- If it doesn’t engage, the starter motor may need repair or replacement.

Wiring Harness:
- Check the wiring harness for damage, corrosion, or disconnected wires.
- Ensure all connections to the solenoid, starter, and safety switches are intact.
Fuses:
- Inspect all fuses for continuity and replace any blown fuses.