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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.

Tip: include the full model number printed on your JDiag label for the best match.

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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TopDiag P200 Smart Hook Instructions

31/2026/XNUMX
TopDiag P200 Smart Hook Specifications Feature Description Voltage Compatibility 12V passenger cars with OBD II protocol Compliance CE marking, EU directives Standards Directive 2014/35/EU, Directive 2014/30/EU, Directive 2014/53/EU, EN 61326,…

JDiag M300 Scanner USB Upgrade Guide

Stiùireadh ùrachadh
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

leabhar-làimhe neach-cleachdaidh
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 M300 Universal Motorcycle Scan Tool User Manual

Leabhar-làimhe cleachdaiche
Comprehensive user manual for the JDiag M300 Universal Motorcycle Scan Tool and Professional Battery Tester, detailing diagnostic functions, battery testing procedures, settings, and warranty information.

Stiùireadh Ùrachaidh Bathar-bog JDiag M300

Stiùireadh bathar-bog ùrachadh
Stiùireadh mionaideach airson ùrachadh a dhèanamh air bathar-bog an inneil JDiag M300. Tha an stiùireadh seo a’ còmhdach ceangal an inneil, fosgladh firmware, lethbhreacadh files, agus a’ crìochnachadh a’ phròiseis ùrachaidh fèin-ghluasadach tro chumhachd do bhaidhsagal-motair.

Leabhar-làimhe Cleachdaiche Sganair JDiag M100 Moto

leabhar-làimhe neach-cleachdaidh
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 U508 TPMS Relearn Tool Instruction Manual

U508 • 13 Ògmhios, 2026
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 • 13 Ògmhios, 2026
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 • July 29, 2025
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 • 24 Iuchar, 2025
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 • 23 Iuchar, 2025
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 • 6 Iuchar, 2025
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 T400 4-in-1 Diagnostic Tool Instruction Manual

T400 • 15 Ògmhios, 2026
Comprehensive instruction manual for the JDiag T400 4-in-1 diagnostic tool, covering OBD2 scanning, battery testing, relay testing, and fuel injector testing. Includes setup, operation, maintenance, troubleshooting, and specifications.

JDiag M208 Motorcycle Diagnostic Tool User Manual

M208 • 1 PDF • May 22, 2026
Comprehensive user manual for the JDiag M208 Motorcycle Diagnostic Tool, covering setup, operation, features like EURO5 system support, battery testing, ABS diagnosis, ECU reset, and troubleshooting.

JDiag M300 Motorcycle Diagnostic Tool User Manual

M300 • 1 PDF • May 13, 2026
Comprehensive user manual for the JDiag M300 Motorcycle Diagnostic Tool, covering setup, operation, maintenance, and troubleshooting for various motorcycle brands and battery testing.

JDiag JD101/YA101 Car Diagnostic Tool User Manual

JD101/YA101 • May 7, 2026
Comprehensive user manual for the JDiag JD101/YA101 OBD2 Car Diagnostic Tool, covering setup, operation, features, specifications, compatibility, and troubleshooting for engine light diagnostics and battery testing.

JDiag M300 Universal Motorcycle Scanner User Manual

M300 • April 23, 2026
Comprehensive user manual for the JDiag M300 Universal Motorcycle Scanner, including setup, operation, maintenance, troubleshooting, and specifications for motorcycle diagnostics and battery testing.

JDiag Topdiag P180 Car Circuit Tester Instruction Manual

P180 • March 19, 2026
Comprehensive instruction manual for the JDiag Topdiag P180 Car Circuit Tester, covering setup, operation, features like breakpoint detection, AC/DC voltage measurement, component activation, and battery diagnostics for 9-30V…

JDiag P200 Pro Auto Circuit Tester User Manual

P200 Pro • March 13, 2026
Comprehensive instruction manual for the JDiag P200 Pro Auto Circuit Tester, covering setup, operation, maintenance, troubleshooting, and specifications for 12V and 24V automotive electrical systems.

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.