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How to Fix Toyota Pallet Jack Fault Code C28 29 in 5 Easy Steps


Toyota Pallet Jack Fault Code C28 29: What It Means and How to Solve It




If you own or operate a Toyota pallet jack, you may encounter a fault code C28 29 on the display. This code indicates that the unit did not pass the self-test when first powered on. This can be caused by various reasons, such as a low battery voltage, a faulty resistor, a short or open circuit in the wiring, a stuck lift contactor, or a defective power amplifier. In this article, we will explain what each of these causes means and how to troubleshoot and fix them.




toyota pallet jack fault code c28 29



What is the self-test and why is it important?




The self-test is a process that the pallet jack performs every time it is turned on. The self-test checks the main components and functions of the pallet jack, such as the battery, the controller, the motor, the lift pump, the sensors, and the communication system. The self-test ensures that the pallet jack is safe and ready to operate.


If the self-test fails, the pallet jack will display a fault code on the screen and will not operate until the problem is resolved. The fault code C28 29 means that the main power switch was turned off or there was a low voltage to the power amplifier during the self-test. This can prevent the pallet jack from starting or lifting properly.


How to troubleshoot and fix Toyota pallet jack fault code C28 29?




To troubleshoot and fix Toyota pallet jack fault code C28 29, you need to follow these steps:


  • Check the main power switch. The main power switch is a red rocker switch located near the battery compartment. Make sure that it is turned on and that there is no damage or corrosion on it. If it is turned off, flip it on and then turn on the key switch. If the fault code clears, you can resume operation. If not, proceed to the next step.



  • Check the battery voltage. The battery voltage should be at least 24 volts for the pallet jack to operate normally. Use a voltmeter to measure the battery voltage at the terminals. If the battery voltage is low, charge the battery or replace it with a fully charged one. If the battery voltage is normal, proceed to the next step.



  • Check the resistor R1. The resistor R1 is a power resistor that supplies the initial power to the controller for the self-test. It is located below the main power switch and has two wires connected to it. The resistor R1 can overheat and trip due to excessive current while the main contactor is open. This can cause a low voltage to the power amplifier and trigger the fault code C28 29.



  • Carefully touch the resistor R1 and see if it is hot. If it is hot, unplug the battery and let it cool down. Then locate and correct any low impedance path that tripped R1, such as a short circuit or a stuck lift contactor. If it is not hot, proceed to the next step.



  • Check wire #24. Wire #24 is a black wire that connects from J5-16 on the controller to one terminal of R1 and then to one terminal of F1 (the fuse near F2). Wire #24 should have 24 volts when measured with respect to ground. If wire #24 has no voltage or less than 24 volts, check for any loose or broken connections, blown fuses, or damaged wires.



If wire #24 has 24 volts, proceed to


  • Check the CAN wiring. The CAN wiring is a communication system that connects the controller, the power amplifier, and other devices on the pallet jack. The CAN wiring consists of two wires: CAN-H (white) and CAN-L (blue). The CAN wiring can have a short or open circuit or electrical noise due to bad connections or outside interference, especially at power on. This can cause the self-test to fail and display the fault code C28 29.



  • Check the CAN wiring for any damage, loose connections, or corrosion. Use an ohmmeter to measure the resistance between CAN-H and CAN-L at both ends of the wiring. The resistance should be between 50 and 70 ohms. If the resistance is too high or too low, there is a short or open circuit in the CAN wiring. Locate and repair the fault.



  • If the resistance is normal, use an oscilloscope to check the signal quality of the CAN wiring. The signal should be a square wave with a peak-to-peak voltage of about 2 volts. If the signal is distorted, noisy, or irregular, there is electrical interference in the CAN wiring. Try operating the pallet jack in a different environment or use shielded cables to reduce the interference.



  • Check the power amplifier. The power amplifier is a device that controls the motor and the lift pump of the pallet jack. It is located on the right side of the battery compartment and has a green LED indicator on it. The power amplifier can be faulty or have an error code that prevents it from passing the self-test.



  • Check the green LED indicator on the power amplifier and see if it is flashing or steady. If it is flashing, count the number of flashes and refer to the manual for the meaning of the error code. If it is steady, check the power wiring from the battery to the power amplifier and make sure there is no damage or loose connections.



How to prevent Toyota pallet jack fault code C28 29?




To prevent Toyota pallet jack fault code C28 29 from occurring, you should follow these tips:


  • Maintain your battery properly and charge it regularly. A low battery voltage can cause a low voltage to the power amplifier and trigger the fault code C28 29.



  • Keep your pallet jack clean and dry. Dirt, dust, moisture, or corrosion can damage or interfere with the electrical components and wiring of your pallet jack and cause a short or open circuit or electrical noise.



  • Inspect your pallet jack regularly and replace any worn or damaged parts. A faulty resistor, a stuck lift contactor, a defective power amplifier, or a damaged wire can cause a low voltage to the power amplifier and trigger the fault code C28 29.



Toyota pallet jack fault code C28 29 is a common problem that can be easily solved by following these steps. By understanding what causes this fault code and how to troubleshoot and fix it, you can ensure that your pallet jack is safe and ready to operate.


Where to find more information and support for Toyota pallet jack fault code C28 29?




If you need more information and support for Toyota pallet jack fault code C28 29, you can refer to these sources:


  • Forkliftaction Forum: Forkliftaction is a website that provides news, events, jobs, and resources for the forklift industry. You can also join their forum and ask questions or share your experiences with other forklift users and experts. You can find a discussion thread about Toyota pallet jack fault code C28 29 on their forum.



  • YouTube Video: YouTube is a video-sharing platform that allows you to watch and upload videos on various topics. You can find a video that shows how to troubleshoot and fix Toyota pallet jack fault code C28 29 on YouTube. The video is uploaded by The Forklift Guy, who is a forklift technician and has many other videos on forklift repair and maintenance.



  • Forklift Codes: Forklift Codes is a website that provides error codes and solutions for various forklift brands and models. You can find an article that explains Toyota pallet jack fault code C28 29 and its possible causes and solutions on their website.



  • Toyota Forklift: Toyota Forklift is the official website of Toyota Material Handling, which is the leading manufacturer of forklifts and material handling equipment. You can find information about Toyota pallet jacks, such as specifications, features, manuals, parts, service, and warranty on their website. You can also contact their customer service or find a dealer near you for more support.



These sources can help you learn more about Toyota pallet jack fault code C28 29 and how to prevent or solve it. You can also consult your manual or contact your supplier or manufacturer for more assistance.


How to avoid common mistakes when dealing with Toyota pallet jack fault code C28 29?




When dealing with Toyota pallet jack fault code C28 29, you should avoid these common mistakes:


  • Ignoring the fault code and continuing to operate the pallet jack. This can cause more damage to the pallet jack and compromise your safety and productivity.



  • Trying to fix the fault code without proper tools, knowledge, or skills. This can worsen the problem or create new ones. You should always use the appropriate tools, follow the instructions, and seek professional help if needed.



  • Using unauthorized or incompatible parts or components to replace or repair the faulty ones. This can void your warranty and cause malfunction or damage to your pallet jack. You should always use genuine or approved parts or components that match your pallet jack model and specifications.



By avoiding these common mistakes, you can deal with Toyota pallet jack fault code C28 29 more effectively and efficiently.


What are the benefits of solving Toyota pallet jack fault code C28 29?




Solving Toyota pallet jack fault code C28 29 can bring you many benefits, such as:


  • Improving the performance and efficiency of your pallet jack. By fixing the fault code, you can restore the normal function and operation of your pallet jack and avoid any delays or errors in your work.



  • Extending the lifespan and durability of your pallet jack. By fixing the fault code, you can prevent further damage or wear and tear to your pallet jack and reduce the need for repairs or replacements in the future.



  • Enhancing the safety and comfort of your pallet jack. By fixing the fault code, you can eliminate any potential hazards or risks that may arise from a faulty pallet jack and ensure that your pallet jack is safe and comfortable to use.



  • Saving money and time. By fixing the fault code, you can avoid any unnecessary costs or losses that may result from a faulty pallet jack, such as downtime, wasted materials, lost productivity, or legal issues. You can also save money and time by preventing or solving the fault code yourself instead of hiring a technician or buying a new pallet jack.



Solving Toyota pallet jack fault code C28 29 can help you enjoy your pallet jack more and get the most out of it.


Conclusion




Toyota pallet jack fault code C28 29 is a common problem that can occur when the pallet jack fails the self-test due to a low voltage to the power amplifier. This can be caused by various reasons, such as a low battery voltage, a faulty resistor, a short or open circuit in the wiring, a stuck lift contactor, or a defective power amplifier. In this article, we have explained what each of these causes means and how to troubleshoot and fix them.


We have also provided some tips on how to prevent, enjoy, and find more information and support for Toyota pallet jack fault code C28 29. We hope that this article has been informative and useful for you and that you have learned something new. If you have any questions or feedback, please feel free to leave a comment below. Thank you for your time and attention. b99f773239


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