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JDiag Manuals & User Guides

JDiag specializes in intelligent automotive and motorcycle diagnostic tools, including OBDII scanners, battery testers, and TPMS relearn devices.

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About JDiag manuals on Manuals.plus

JDiag Electronics Technology Co., Ltd. is a manufacturer dedicated to automotive and motorcycle diagnostic solutions. The brand offers a comprehensive lineup of professional and DIY tools designed to troubleshoot electronic fuel injection (EFI) systems, battery health, and engine performance. Key products include the M-series universal motorcycle scanners (M100, M200, M300, M400), which provide functions such as ECU reading, fault code clearing, and signal simulation for major brands like Honda, Yamaha, BMW, and Ducati.

In addition to motorcycle diagnostics, JDiag produces automotive scan tools, TPMS activation tools (such as the EL-50448), and advanced circuit testers. These devices are known for their rugged handheld designs, multi-language support, and regular firmware updates, making them essential equipment for vehicle technicians and maintenance enthusiasts worldwide.

JDiag manuals

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JDiag M300 Software Update Guide

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Detailed instructions for updating the JDiag M300 device software. This guide covers connecting the device, unzipping firmware, copying files, and completing the automatic upgrade process via your motorcycle's power.

JDiag M100 Moto Scanner User's Manual

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Comprehensive user manual for the JDiag M100 Moto Scanner, a universal motorcycle scan tool. Covers safety precautions, features, functions, operation instructions for diagnosis, battery testing, module tests, setup, and update…

JDiag manuals from online retailers

JDIAG 2IN1 TPMS Relearn Tool Super EL50448 Instruction Manual

Super EL50448 • September 1, 2025
Comprehensive instruction manual for the JDIAG 2IN1 TPMS Relearn Tool Super EL50448, providing detailed setup, operating procedures, compatibility, troubleshooting, and specifications for GM and Ford vehicle tire pressure…

JDIAG JD001 OBD2 Scanner User Manual

JD001 • 2025 m. liepos 29 d.
JDIAG JD001 OBD2 Scanner Professional Code Reader Engine Fault Scanner CAN Diagnostic Scan Tool for Cars Since 1996 Easy to Read and Clear False Code with DTC Lookup,…

JDIAG EL-50448 TPMS Relearn Tool User Manual

EL50448 • 2025 m. liepos 24 d.
Comprehensive user manual for the JDIAG EL-50448 TPMS Relearn Tool, providing instructions for setup, operation, maintenance, and troubleshooting for GM series vehicles including Buick, Chevy, and Cadillac.

JDIAG EL-50448 TPMS Relearn Tool User Manual

EL-50448 • 2025 m. liepos 23 d.
Comprehensive user manual for the JDIAG EL-50448 TPMS Relearn Tool, covering setup, operation, maintenance, and troubleshooting for Buick, Chevy, and Cadillac vehicles.

JDIAG EL-50449 TPMS Relearn Tool User Manual

EL-50449 • 2025 m. liepos 6 d.
The JDIAG EL-50449 TPMS Relearn Tool is an essential device designed to activate and reset Tire Pressure Monitoring System (TPMS) sensors in a wide range of Ford, Lincoln,…

JDiag M200 Pro Motorcycle Diagnostic Scanner Instruction Manual

M200 Pro • 2026 m. sausio 21 d.
Comprehensive instruction manual for the JDiag M200 Pro Motorcycle Diagnostic Scanner, covering setup, operation, maintenance, troubleshooting, specifications, and features like ECU remap, battery testing, and signal simulation.

JDiag M200 Pro Universal Motorcycle Scanner User Manual

M200 Full Version • January 3, 2026
Comprehensive user manual for the JDiag M200 Pro Full Version Multilingual Universal Motorcycle Scanner, detailing setup, operation, maintenance, troubleshooting, specifications, and warranty.

JDiag M300 Motorcycle Diagnostic Scanner User Manual

M300 • 2025 m. gruodžio 10 d.
Comprehensive user manual for the JDiag M300 Motorcycle Diagnostic Scanner, covering setup, operation, maintenance, troubleshooting, specifications, and supported vehicle models.

JDiag M400 Motorcycle Diagnostic Scanner User Manual

M400 • 2025 m. lapkričio 26 d.
Comprehensive instruction manual for the JDiag M400 Motorcycle Diagnostic Scanner, covering setup, operation, maintenance, specifications, and troubleshooting for EFI motorcycles.

JDiag BT300 Car Battery Tester User Manual

BT300 • 2025 m. lapkričio 4 d.
Comprehensive user manual for the JDiag BT300 Car Battery Tester, covering setup, operation, maintenance, troubleshooting, and specifications for 6V, 12V, and 24V automotive batteries.

JDiag M200 Motorcycle Diagnostic Scanner User Manual

M200 • 2025 m. spalio 4 d.
Comprehensive user manual for the JDiag M200 Motorcycle Diagnostic Scanner, covering setup, operation, features, specifications, and maintenance for motorbike and battery diagnostics.

JDiag support FAQ

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  • How do I update the software on my JDiag motorcycle scanner?

    To update your device, download the latest firmware package from the official JDiag website (jdiagtool.com/Download). Connect your device to a computer via USB, copy the update files to the device's storage or SD card as instructed in your specific model's user manual.

  • What motorcycle brands does the JDiag M-series support?

    The JDiag M-series (M100, M200, M300, etc.) generally supports a wide range of manufacturers including Honda, Yamaha, Kawasaki, Suzuki, BMW, Ducati, KTM, and many others. Adaptor cables are often required for specific brands.

  • What is the warranty period for JDiag tools?

    JDiag typically provides a one-year warranty from the date of original purchase, covering defects in material and workmanship, provided the product was purchased from an official channel.

  • How do I perform a battery test with a JDiag scanner?

    Connect the device clamps to the vehicle battery (Red to Positive, Black to Negative). Select the 'Battery Test' function from the main menu, choose the battery type (e.g., standard flooded, AGM), and follow the on-screen prompts to run quick or standard tests.