Riokko YM119 OBD2 Scanner User Manual

1. Product Overview

The Riokko YM119 OBD2 Scanner is a diagnostic tool designed for car owners to easily read and clear engine fault codes. It provides real-time data, freeze frame information, and supports various diagnostic functions for OBDII/EOBD compliant vehicles manufactured since 1996. Its intuitive interface and compact design make it suitable for both professional technicians and home users.

Riokko YM119 OBD2 Scanner main unit with cable and OBDII connector

Figure 1.1: Riokko YM119 OBD2 Scanner. This image shows the main diagnostic tool with its color screen, control buttons, and the attached OBDII connector cable.

2. Setup and Initial Use

2.1 Package Contents

Riokko YM119 OBD2 Scanner Unit
User Manual (this document)

2.2 Connecting the Scanner

Locate the vehicle's Data Link Connector (DLC). This is typically located under the dashboard on the driver's side.
Ensure the vehicle's ignition is turned ON (engine can be off or running, depending on the test).
Plug the OBDII connector of the YM119 scanner firmly into the vehicle's DLC. The scanner will power on automatically.

2.3 Language Selection

The YM119 supports 13 national languages. To change the language:

From the main menu, navigate to "Setting" using the arrow keys.
Press the OK button to enter the Setting menu.
Select "Language" and choose your preferred language from the list.
Press OK to confirm your selection.

3. Operating the Scanner

3.1 Navigation Buttons

EXIT: Returns to the previous screen or main menu.
UP/DOWN Arrows: Navigate through menu options.
LEFT/RIGHT Arrows: Navigate through data screens or adjust settings.
OK: Confirms selection or enters a submenu.
BAT: Initiates the battery voltage test.

Riokko YM119 OBD2 Scanner showing main menu with icons for Diagnosis, Battery, DTC Lib, and Setting, alongside a diagram of its professional functions.

Figure 3.1: Main Menu and Professional Functions. This image illustrates the scanner's main menu interface and highlights its key diagnostic capabilities such as Engine Fault Diagnostics, Quick Clear Fault Code, Real-time Data Stream, and Battery Life Test.

3.2 Diagnostic Functions

From the main menu, select "Diagnosis" to access the primary diagnostic functions.

Riokko YM119 OBD2 Scanner displaying a list of 10 diagnostic test items including Read Codes, Erase Codes, View Freeze Frame, I/M Readiness, and various sensor tests.

Figure 3.2: OBD II Diagnostic Test Items. This image shows the comprehensive list of diagnostic tests available on the scanner, from reading and erasing codes to advanced sensor and component tests.

3.2.1 Read Codes

This function retrieves Diagnostic Trouble Codes (DTCs) from the vehicle's computer. These codes indicate specific issues detected by the vehicle's onboard diagnostic system.

Select "Read Codes" from the Diagnosis menu.
The scanner will display any stored, pending, or permanent DTCs.
Use the UP/DOWN arrows to scroll through the codes.
For detailed information on a specific code, use the "DTC Lib" function or refer to a reliable automotive repair database.

3.2.2 Clear Codes

This function erases DTCs from the vehicle's computer and turns off the Malfunction Indicator Lamp (MIL), also known as the Check Engine Light. Note: Clearing codes does not fix the underlying problem. The MIL will illuminate again if the fault persists.

Image showing a car's dashboard with the Riokko YM119 OBD2 Scanner connected, and a comparison of an illuminated engine light turning off after using the scanner.

Figure 3.3: Check and Turn Off Engine Light. This image demonstrates the scanner's ability to diagnose and clear engine fault codes, effectively turning off the Check Engine Light on the vehicle's dashboard.

Select "Erase Codes" from the Diagnosis menu.
Confirm the action when prompted.
The MIL should turn off.

3.2.3 Real-time Data (Live Data Stream)

View real-time sensor data from the vehicle's engine control unit (ECU). This data can be displayed in text or graphical format, allowing for dynamic monitoring of vehicle performance.

Riokko YM119 OBD2 Scanner displaying real-time PCM data and a realtime curve for various engine parameters like LOAD_PCT, ECT, and SHRTFT.

Figure 3.4: Real-time Data Stream. This image shows the scanner's capability to display live engine data, including various sensor readings and their corresponding real-time curves, aiding in dynamic vehicle diagnostics.

Select "Live Data" or "Realtime Curve" from the Diagnosis menu.
Use the UP/DOWN arrows to scroll through different data parameters.
Use the LEFT/RIGHT arrows to switch between text and graph views (if available for the parameter).

3.2.4 Freeze Frame Data

When an emission-related fault occurs, the vehicle's computer records a snapshot of operating conditions at the time of the fault. This "freeze frame" data helps in diagnosing intermittent problems.

Riokko YM119 OBD2 Scanner screen showing Freeze Frame data including parameters like DTCRFRZF, LOAD_PCT, ECT, MAP, RPM, VSS, and MAF, along with Vehicle Info.

Figure 3.5: View Freeze Frame and DTCs. This image displays the scanner's ability to capture and show freeze frame data, which provides a snapshot of engine conditions at the moment a fault code was set, aiding in diagnosis.

Select "View Freeze Frame" from the Diagnosis menu.
Review the recorded parameters.

3.2.5 DTC Query (DTC Lib)

The built-in DTC Library allows you to look up definitions for generic (P0, P2, P34, B0, C0, U0) and manufacturer-specific (P1, P30-P33, B1, C1, U1) codes.

From the main menu, select "DTC Lib".
Enter the DTC code using the arrow keys and OK button.
The scanner will display the definition of the code.

3.2.6 I/M Readiness

This function checks the readiness of the emission-related monitoring systems on the vehicle. It's useful for determining if the vehicle is ready for an emissions test.

Select "I/M Readiness" from the Diagnosis menu.
The scanner will display the status of various monitors (e.g., Misfire Monitor, Fuel System Monitor). "OK" indicates the monitor has completed its test, "INC" indicates incomplete, and "N/A" indicates not applicable.

3.2.7 Battery Voltage Test

The YM119 can perform a basic battery voltage test to assess the vehicle's battery health.

Riokko YM119 OBD2 Scanner being used to perform a battery life test, with icons indicating battery monitoring and understanding battery index.

Figure 3.6: Estimate Battery Life Test. This image shows the scanner's dedicated function for monitoring and assessing the vehicle's battery voltage and overall health.

From the main menu, select "Battery" or press the BAT button.
The scanner will display the current battery voltage.

3.2.8 Vehicle Information

This function retrieves the Vehicle Identification Number (VIN), Calibration ID (CALID), and Calibration Verification Number (CVN) of the vehicle.

Select "Vehicle Info" from the Diagnosis menu.
The scanner will display the available vehicle information.

4. Maintenance

4.1 Cleaning the Device

To maintain the scanner's performance and appearance:

Wipe the unit with a soft, damp cloth.
Do not use abrasive cleaners or solvents.
Ensure the device is dry before storage.

4.2 Storage

Store the scanner in a clean, dry environment away from extreme temperatures and direct sunlight. Keep the OBDII connector free from dust and debris.

5. Troubleshooting

Problem	Possible Cause	Solution
Scanner does not power on.	Loose connection to vehicle DLC. Vehicle ignition is not ON. Vehicle battery low or dead. Faulty DLC or vehicle wiring.	Ensure the OBDII connector is fully seated in the vehicle's DLC. Turn the vehicle ignition to the ON position. Check vehicle battery voltage. Consult a qualified mechanic to inspect the vehicle's DLC and wiring.
"Link Error" or "Communication Error" message.	Incorrect protocol detected. Vehicle not OBDII compliant. Faulty connection. Vehicle's ECU is not responding.	Verify the vehicle is OBDII compliant (most vehicles 1996 and newer). Check the connection to the DLC. Try turning the ignition off and on again, then reconnect the scanner. If the issue persists, there might be a problem with the vehicle's ECU or wiring.
Engine light reappears after clearing codes.	Underlying fault has not been repaired.	Clearing codes only turns off the light; it does not fix the problem. Diagnose and repair the underlying issue before clearing codes again.
Inaccurate or missing data readings.	Sensor malfunction. Vehicle's ECU not providing data. Compatibility issues with specific vehicle models.	Ensure the vehicle is running or ignition is ON. Some older or less common vehicles may not fully support all OBDII PIDs. Consult a professional mechanic for further diagnosis.

6. Specifications

Feature	Detail
Model Number	AE0004L (YM119)
Brand	Riokko
Screen Size	2.8 Inches
Supported Protocols	Nine standard OBDII/EOBD protocols
Supported Languages	13 national languages
Item Weight	7.8 ounces (approx. 221 grams)
Package Dimensions	8.11 x 5.35 x 1.14 inches (approx. 20.6 x 13.6 x 2.9 cm)
First Available Date	October 16, 2024

7. Warranty and Support

7.1 Warranty Information

The Riokko YM119 OBD2 Scanner comes with a 3-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.

7.2 Return Policy

A 30-day no-questions-asked return policy is offered for your purchase. Please refer to your retailer's specific return instructions.

7.3 Customer Support

For technical assistance, warranty claims, or any other inquiries, please contact Riokko customer service. 24/7 customer service is available to assist you.

Please visit the official Riokko website or refer to your product packaging for the most current contact information.