2017 Case SV185: Troubleshooting No Glow Plug Light Issue

[MikePhua]

Introduction to the Problem
A common issue faced by some operators of the 2017 Case SV185 skid steer is the absence of the glow plug light during startup. This can lead to concerns about whether the glow plugs are working properly, and ultimately, whether the machine will start smoothly in cold conditions. Glow plugs are essential for starting the engine in low temperatures, as they help heat the air in the combustion chamber to ensure proper ignition. When the glow plug light fails to illuminate, it may indicate an underlying issue that needs to be addressed.
Potential Causes of No Glow Plug Light
Several factors could contribute to the glow plug light not coming on in a 2017 Case SV185. Some of the most common causes include:

• Faulty Glow Plug Relay: The relay controls the flow of electricity to the glow plugs. If it malfunctions, the glow plugs may not receive power, and the light won't turn on.
  
• Blown Fuse: The glow plug system is protected by a fuse. A blown fuse can interrupt the operation of the glow plugs and prevent the glow plug light from lighting up.
  
• Wiring Issues: Damaged or corroded wires in the glow plug circuit could lead to a loss of power, causing the light to fail. This may require checking the wiring for any visible damage or loose connections.
  
• Faulty Glow Plugs: If one or more glow plugs are faulty, the system may not activate properly. Even though a single malfunctioning glow plug may not always prevent the engine from starting, it could still interfere with the glow plug light's operation.
  
• Ignition Switch or ECU Malfunction: In some cases, the issue might stem from the ignition switch or the machine's electronic control unit (ECU), which may not be signaling the glow plug system to activate. This can be a more complex problem that requires diagnostic tools to pinpoint.
  

Steps for Diagnosing the Issue
To diagnose the cause of the no glow plug light issue, follow these steps:

1. Check the Glow Plug Relay: Begin by inspecting the glow plug relay. You can use a multimeter to test for continuity and check if the relay is receiving power. If the relay is not functioning properly, it will need to be replaced.
   
2. Inspect the Fuses: Check the fuse panel for any blown fuses. If the fuse related to the glow plug system is blown, replace it with the appropriate rating. Be sure to check if the fuse blows again after replacement, as it could indicate a short circuit.
   
3. Examine the Wiring: Look for any visible signs of wear, corrosion, or loose connections in the glow plug circuit. Pay special attention to the wiring leading to the glow plug relay, the fuse, and the glow plugs themselves.
   
4. Test the Glow Plugs: Using a multimeter, you can test each glow plug to ensure it is receiving power and operating correctly. If a glow plug is faulty, replace it to restore proper function.
   
5. Check the Ignition Switch and ECU: If all the components above appear to be functioning properly, the issue may lie with the ignition switch or ECU. A diagnostic tool can help you read any trouble codes from the ECU and pinpoint if it's sending the correct signals to activate the glow plug system.
   

When to Seek Professional Help
If you're unable to identify the problem or the issue persists after you've addressed potential causes, it may be time to consult a professional mechanic or Case service technician. They can perform more advanced diagnostics and may have access to proprietary tools that can identify deeper electrical issues.
Preventive Maintenance Tips
To avoid future issues with the glow plug system, here are some preventive maintenance tips:

• Regularly Inspect Wiring: Make sure that all wiring in the glow plug circuit is in good condition and free from corrosion. Tighten any loose connections.
  
• Check Fuses and Relays: Periodically inspect the fuses and relays for signs of wear or damage. Replace them as necessary to ensure the glow plug system is functioning reliably.
  
• Maintain the Glow Plugs: Ensure that the glow plugs are functioning properly and replace them as needed. Faulty glow plugs can cause starting issues and other related problems.
  

Conclusion
The absence of the glow plug light on a 2017 Case SV185 can be a frustrating issue, but it's often a simple fix. By understanding the common causes and following the correct diagnostic procedures, operators can efficiently resolve the problem. Whether it's a faulty relay, a blown fuse, or a wiring issue, identifying and addressing the root cause will ensure reliable engine starts and the continued performance of the skid steer. If the issue persists, consulting a professional may be necessary to avoid further complications.