1. Introducció
The JDIAG JD101 is a universal On-Board Diagnostics II (OBD2) car code reader designed to diagnose engine-related issues in vehicles. It provides essential information such as Diagnostic Trouble Codes (DTCs), live data streams, and vehicle information, helping users identify and resolve common car problems. This device also includes a battery test function to assess the vehicle's battery status. It is compatible with most OBDII compliant vehicles manufactured in the USA (1996 and newer), Europe (EOBD, 2000 and newer), and Asia (2000 and newer), as well as newer OBDII and CAN protocol vehicles.

Figura 1.1: The JDIAG JD101 scanner helps identify various vehicle issues.
2. Contingut del paquet
En obrir el paquet, comproveu que tots els elements hi siguin presents i que estiguin en bon estat:
- 1 x JDIAG JD101 OBD2 Scanner Unit
- 1 x Manual d'usuari multilingüe

Figura 2.1: Contents of the JDIAG JD101 package.
3. Producte acabatview
The JDIAG JD101 features a compact design with a 2.4-inch LCD display and a user-friendly 4-button keypad for navigation. It connects directly to your vehicle's OBD2 port for power and data transfer.

Figura 3.1: JDIAG JD101 Product Components.
Característiques principals:
- Compatibilitat universal: Supports most US OBDII (1996+), European EOBD (2000+), Asian (2000+) vehicles, and newer OBDII/CAN protocols.
- Preparació I/M amb un sol clic: Quickly checks emission system status.
- DTC Retrieval: Reads generic (P0, P2, P3, U0) and manufacturer-specific (P1, P3, U1) codes, including pending, stored, and permanent codes.
- MIL Control: Determines the reason for the Malfunction Indicator Lamp (MIL) illumination and allows for its deactivation.
- Visualització: 2.4-inch LCD with DTC definitions directly on screen.
- Visualització de dades: Shows freeze frame data and live data streams (over 130 PIDs).
- Cerca DTC: Built-in DTC library for quick reference.
- Informació del vehicle: Recupera el número d'identificació del vehicle (VIN), l'ID de calibratge (CIN) i el número de verificació de calibratge (CVN).
- Funció de prova de bateria: Assesses the vehicle's battery status.
- Suport multilingüe: English, Spanish, French, Russian, German, Italian, etc.
- Actualitzacions de firmware: Free online firmware updates via USB cable.

Figura 3.2: Avanç clautages of the JDIAG JD101 scanner.
4. Configuració i connexió
The JDIAG JD101 does not require batteries. It is powered directly by your vehicle's OBD2 port.
- Localitza el port OBD2: The OBD2 port is typically located under the dashboard on the driver's side, often near the steering column. Refer to your vehicle's owner's manual if you cannot find it.
- Apagar l'encesa: Ensure your vehicle's ignition is in the OFF position before connecting the scanner.
- Connecteu l'escàner: Plug the OBD2 connector of the JD101 scanner firmly into your vehicle's OBD2 port.
- Engegar l'encesa: Turn the vehicle's ignition to the ON position (do not start the engine unless instructed by a specific test procedure). The scanner will automatically power on and display the main menu.
5. Instruccions de funcionament
Utilitza el Up i Avall buttons to navigate through menu options, the Entra button to select an option, and the Sortida botó per tornar al menú anterior o sortir d'una funció.

Figura 5.1: Main functions of the JDIAG JD101 scanner.
5.1. Llegir codis
Aquesta funció recupera els codis de diagnòstic d'errors (DTC) de l'ordinador del vehicle. Aquests codis indiquen problemes específics detectats pel sistema d'autodiagnòstic del vehicle.
- Al menú principal, seleccioneu Llegir codis i premeu Entra.
- The scanner will display any detected DTCs, along with their definitions on the 2.4-inch LCD.
- Utilitza el Up i Avall buttons to scroll through multiple codes if present.
5.2. Esborrar codis
This function clears all Diagnostic Trouble Codes (DTCs) from the vehicle's computer and turns off the Malfunction Indicator Lamp (MIL). Ensure the underlying issue has been resolved before clearing codes.
- Al menú principal, seleccioneu Esborra codis i premeu Entra.
- Confirmeu la vostra elecció quan se us demani.
- The scanner will clear the codes and turn off the MIL.
5.3. Flux de dades en directe
This function displays real-time operational parameters from the vehicle's sensors and components, such as engine RPM, vehicle speed, oxygen sensor readings, and more. The JD101 supports over 130 PIDs (Parameter IDs).
- Al menú principal, seleccioneu Dades en directe i premeu Entra.
- The scanner will display a list of available PIDs. Select the desired parameters to view.
- The data will be displayed in real-time. Use the Up i Avall buttons to scroll through the data.
5.4. Preparació I/M
I/M Readiness (Inspection/Maintenance Readiness) indicates whether the various emissions-related systems on the vehicle are operating correctly and have completed their diagnostic tests. This is useful for emissions testing.
- Al menú principal, seleccioneu Preparació I/M i premeu Entra.
- The scanner will display the status of various monitors (e.g., Catalyst Monitor, O2 Sensor Monitor). A 'PASS' or 'OK' status indicates the monitor has completed its test.
5.5. Dades de fotograma congelat
When an emission-related fault occurs, the vehicle's computer stores a snapshot of operating conditions at the moment the fault was detected. This is called Freeze Frame Data and can help in diagnosing intermittent problems.
- Al menú principal, seleccioneu View Congelar fotograma i premeu Entra.
- The scanner will display the recorded parameters.
5.6. Vehicle Information (VIN, CIN, CVN)
This function allows you to retrieve important vehicle identification information.
- VIN (Vehicle Identification Number): A unique 17-character code for the vehicle.
- CIN (Calibration Identification Number): Identifies the software version of the vehicle's Engine Control Unit (ECU).
- CVN (Calibration Verification Number): A checksum value used to verify the integrity of the ECU software.
- Al menú principal, seleccioneu Informació del vehicle i premeu Entra.
- L'escàner mostrarà la informació disponible del vehicle.

Figura 5.2: Retrieving vehicle identification information.
5.7. Funció de prova de bateria
The JD101 includes a function to determine the vehicle's battery status, providing a quick assessment of its health.
- Al menú principal, seleccioneu Prova de bateria (o una opció similar) i premeu Entra.
- Follow the on-screen prompts to perform the test. The scanner will display the battery voltage i estat.
6. Manteniment
6.1. Actualització del firmware
The JDIAG JD101 supports free online firmware updates to ensure compatibility with newer vehicles and to add new features. This process requires a computer running Windows and a Mini USB cable (not included).
- Descarregar programari: Visit the official JDiag weblloc (www.jdiag.com) and navigate to the 'Downloads' section. Download the latest firmware update tool (e.g., 'JD setup toolkit') and the firmware file for the JD101.
- Instal·leu el controlador: Install the provided USB driver (e.g., STMicroelectronics driver) on your Windows PC.
- Connecta l'escàner: Connect the JD101 scanner to your PC using a Mini USB cable.
- Executa l'eina d'actualització: Launch the appropriate upgrade tool (e.g., 'JD Series upgrade tool', no 'Elite II upgrade tool').
- Seguiu les indicacions: Follow the on-screen instructions to select the firmware file and initiate the update process. The update may take several minutes. Do not disconnect the device during this time.
- Verificació: Once complete, the tool will display a success message, including the new firmware version and device serial number.
Nota: The update software is compatible with Windows operating systems, including Windows XP as specified in product details. Ensure your PC meets the minimum system requirements for the update tool.
7. Solució De Problemes
- El dispositiu no s'encén: Ensure the scanner is correctly plugged into the vehicle's OBD2 port and the vehicle's ignition is in the ON position. The device draws power directly from the OBD2 port.
- Sense comunicació amb el vehicle: Verify that your vehicle is OBDII compliant (most US vehicles 1996+, European EOBD 2000+, Asian 2000+). Check the connection to the OBD2 port. If issues persist, try the scanner on another compatible vehicle to rule out a vehicle-specific problem.
- Scanner Not Working Properly: If the device exhibits unexpected behavior, try performing a firmware update as described in Section 6.1. If the problem persists, contact JDIAG technical support.
- Cannot Read ABS/Airbag Codes: The JDIAG JD101 is designed to work exclusively with engine-related codes (OBDII/EOBD). It does not support diagnostic functions for ABS (Anti-lock Braking System) or Airbag systems.
8. Especificacions
| Característica | Especificació |
|---|---|
| Marca | JDIAG |
| Número de model | JD101 (also referred to as 'code reader') |
| Font d'alimentació | Vehicle OBD2 Port Powered (No internal batteries required for operation) |
| Mida de la pantalla | 2.4 polzades |
| Protocols compatibles | SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 KWP, ISO 15765-4 CAN |
| Sistema operatiu (per a actualitzacions) | Windows XP and newer (for firmware update software) |
| Pes de l'article | 220 grams |
| Fabricant | JDiag Electronics Technology Co.,Ltd |
| UPC | 780614143477, 791280490895 |
9. Garantia i Suport
The JDIAG JD101 OBD2 scanner comes with a garantia de dos anys des de la data de compra, cobrint defectes de fabricació i avaries en condicions d'ús normal.
For technical assistance, troubleshooting, or warranty claims, please contact JDIAG customer support or visit the official JDIAG website for further resources and contact information:
Oficial Weblloc: www.jdiag.com