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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 M208 Scanner Motorcycle Diagnostic Tool User Guide

3 m. rugpjūčio 2026 d
JDiag M208 Scanner Motorcycle Diagnostic Tool Precautions To prevent personal injury or unnecessary damage while using the tool,please read this Owner's Manual carefully first and observe at least the following…

JDiag M300 Scanner Motorcycle Diagnostic Tool User Manual

18 m. birželio 2026 d
JDiag M300 Scanner Motorcycle Diagnostic Specifications Supported Languages: English, Spanish, French, Turkish, Portuguese, Vietnamese, Indonesian, Chinese, Khmer, Thai, German, Italian, Japanese, Korean, Polish, Russian Software Upgrades: Free; contact the seller…

JDiag M100 PRO EFI Inspection Cables Guide

dalių sąrašo diagrama
A comprehensive list of available EFI inspection cables for the JDiag M100 PRO diagnostic tool, compatible with various motorcycle and scooter brands including Yamaha, Honda, Kawasaki, and Suzuki.

JDiag M300 Scanner USB Upgrade Guide

Atnaujinimo vadovas
A step-by-step guide for performing a USB firmware upgrade on the JDiag M300 motorcycle diagnostic scanner, including connecting to the computer, downloading software, and updating the device.

JDiag FasTPMS Super EL50448 User Manual

vartotojo vadovas
User manual for the JDiag FasTPMS Super EL50448, a TPMS relearn tool compatible with GM and Ford vehicles. Provides instructions on switching modes, using the device, and setting cars into…

JDiag manuals from online retailers

JDIAG PB60 Power Circuit Probe Tester User Manual

PB60 • 2026 m. rugpjūčio 4 d.
Comprehensive instruction manual for the JDIAG PB60 Power Circuit Probe Tester, covering setup, operation, maintenance, troubleshooting, and specifications for automotive electrical system diagnostics.

JDIAG U508 TPMS Relearn Tool Instruction Manual

U508 • 2026 m. birželio 13 d.
Comprehensive instruction manual for the JDIAG U508 TPMS Relearn Tool, covering setup, operation, compatibility, and troubleshooting for 315MHz and 433MHz tire pressure monitoring systems.

JDIAG TPMS Relearn Tool T508 User Manual

T508 • 2026 m. birželio 13 d.
Official instruction manual for the JDIAG T508 TPMS Relearn Tool, covering setup, operation, vehicle compatibility, and specifications for tire pressure monitoring system sensor activation.

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 M400 Pro Motorcycle Diagnostic Scan Tool User Manual

M400 Pro • 1 PDF • 2026 m. rugsėjo 4 d.
Comprehensive user manual for the JDiag M400 Pro Motorcycle Diagnostic Scan Tool, covering setup, operation, maintenance, troubleshooting, and specifications for EFI, ABS, and battery systems.

JDiag M208 Motorcycle Diagnostic Tool User Manual

M208 • 1 PDF • 2026 m. rugsėjo 2 d.
Comprehensive user manual for the JDiag M208 Motorcycle Diagnostic Tool, covering setup, operation, features like EURO5 support, battery test, ABS system test, ECU reset, and troubleshooting.

JDiag Topdiag P180 Car Circuit Tester User Manual

P180 • 1 PDF • August 26, 2026
Comprehensive instruction manual for the JDiag Topdiag P180 Car Circuit Tester, covering setup, operation, maintenance, troubleshooting, and specifications for 6-30V vehicle electrical systems.

JDiag M400 Motorcycle Diagnostic Scanner User Manual

M400 • 1 PDF • August 15, 2026
Comprehensive user manual for the JDiag M400 Motorcycle Diagnostic Scanner, covering setup, operation, maintenance, troubleshooting, and specifications for various motorcycle brands.

JDiag M200 Pro Motorcycle Scanner Instruction Manual

M200 Pro • 2026 m. rugpjūčio 1 d.
Comprehensive instruction manual for the JDiag M200 Pro, a professional motorcycle diagnostic tool with ECU remap, ECU programming, system diagnosis, and battery analysis capabilities. Includes setup, operation, maintenance,…

JDiag T100 OBD II Scanner Tool User Manual

T100 • 1 PDF • July 29, 2026
Comprehensive instruction manual for the JDiag T100 OBD II Scanner Tool, covering setup, operation, maintenance, troubleshooting, and specifications.

JDiag Topdiag P180 Car Circuit Tester User Manual

Topdiag P180 • July 22, 2026
Comprehensive instruction manual for the JDiag Topdiag P180 Automotive Electrical Probe Kit, covering setup, operation, features, specifications, and troubleshooting for 9-30V vehicle electrical systems.

JDiag M200 Pro Motorcycle Diagnostic Scanner User Manual

M200 Pro • 1 PDF • July 15, 2026
Comprehensive instruction manual for the JDiag M200 Pro Motorcycle Diagnostic Scanner, covering setup, operation, maintenance, and troubleshooting for various motorcycle diagnostic functions including ECU remapping, battery testing, and…

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.