Qoltec OBDII/EOBD Diagnostic Tester
Model: 50685
Introduction
Thank you for choosing our OBDII/EOBD diagnostic tool. We are confident that this product will meet your expectations. This user manual guides you through the installation and usage of the device. If you have any questions after reading this manual, please contact the NTEC sp. z o.o. service department.
About the Product
The Qoltec OBD2/EOBD is an intuitive diagnostic tool that allows you to quickly identify and resolve problems in your car. The device is used to check the engines of all vehicles compatible with OBDII protocols, featuring a 12V power supply and a standard 16-pin connector. With this versatile device, you can read fault codes, identify errors, and restore your vehicle's full functionality instantly.
The DLC (Data Link Connector) is typically located about 30 cm from the center of the vehicle's dashboard (cockpit).
Device Structure
- 1. LCD Screen
- 2. Red LED: Indicates an engine problem. The "MIL" (Malfunction Indicator Lamp) may illuminate.
- 3. Yellow LED: Indicates a potential problem. Some diagnostics may not be complete or DTCs are pending.
- 4. Green LED: Indicates normal engine operation.
- 5. Function Button
- 6. Back Button
- 7. OBDII Interface
- 8. Up Button
- 9. Enter Button
- 10. Down Button
Function Description
- Diagnostics for two systems: optional engine and transmission.
- Quick indication of engine faults with green/yellow/red LED indicators for fault lights.
- Reading and clearing engine fault codes and displaying DTC definitions. 16,929 DTCs (Diagnostic Trouble Codes) are available in the instrument system.
- Displaying sensor data streams, supporting 249 parameter types.
- Displaying Freeze Frame data and I/M readiness status.
- Reading vehicle information: Vehicle Identification Number (VIN), Calibration IDs (ID), Calibration Verification Numbers (CVN).
- Testing vehicle starting and charging systems.
- Supports multiple languages.
- Supported Protocols:
- SAE J1850 VPW
- ISO 9141-2
- ISO 14230-4 (KWP SBAUD)
- ISO 15765-4 (CAN 11/500)
- ISO 15765-4 (CAN 29/500)
- SAE J1850 PWM
- ISO 14230-4 (KWP FAST)
- ISO 15765-4 (CAN 11/250)
- ISO 15765-4 (CAN 29/250)
Device Operation Principle
Language: The factory default language is English. Other languages can be manually set in the device menu.
Units: The test device is designed for both metric and imperial units. The default setting is metric.
Fn Key: Ability to assign the Fn key for quick one-click testing of options such as "Normal Data Stream", "All Data Stream", "I/M Readiness", or "Code Reading" for dual-system selection.
Technical Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 8V-25V |
| Operating Current | 52mA |
| Operating Temperature | -20°C-70°C |
| Storage Temperature | -30°C-80°C |
| Display | 2.4" TFT color screen |
| Supported Data Stream Type | 249 types |
| Number of Supported Codes | 16929 |
Diagnostics
Start the car engine and connect the OBDII connector to the vehicle's OBDII interface.
Access the main interface; click the "OK" button to start scanning the vehicle's system (DLC). If one system is detected, it defaults to the engine system. If two systems are detected, a system selection menu will appear, allowing you to choose the system to diagnose.
Example: Select ECU 1/2. Options like "$ 7E8: Engine" and "$ 7E9: A/T" are displayed.
Diagnostic Menu
- Read Codes: Reads engine or transmission system diagnostic trouble codes (DTCs) and displays standard definitions.
- Clear Codes: Clears all DTCs in the system.
- Data Stream: Reads and displays data from all supported sensors, up to 249 parameter types.
- Freeze Frame: Freeze Frame data records vehicle status information (fault code, vehicle speed, engine RPM, water temperature, etc.) during an emissions-related fault.
- I/M Readiness: The I/M Readiness function is used to check the operation of the OBD2-compliant vehicle's emission system. Some newer vehicle models may support two types of I/M readiness tests:
- A. Since DTC cleared: Shows monitor status after DTCs are cleared.
- B. Since DTCs Born: Shows monitor status since the start of the current drive cycle.
- "OK" / "INC": Diagnostic test completed.
- "N/A": Diagnostic test not completed.
- "N/A": Not supported.
- Vehicle Information: Overview of the vehicle's Vehicle Identification Number (VIN), Calibration Identification Numbers (ID), and Calibration Verification Numbers (CVN).
DTC
There are 16,929 DTC definitions in the instrument system. Enter the DTC number and press the Enter key. (See Figure 3)
A detailed fault definition will be displayed, which should be referred to during maintenance.
Example: DTC Lookup P0010. Options: Change Digit [⬆️/⬇️], Exit [↩️], Confirm [✔️]. Detailed definition: "A Camshaft Position Actuator Circuit/Open Bank 1".
Cranking System Test
The test proceeds as follows:
- Select the "Cranking Test" function and press the ENTER button to start.
- Then, start the engine when the corresponding message appears on the screen. (See Figure 4) The tester will automatically complete the test and display the results.
- If RPM is detected (?), the following message will be displayed.
- Cranking voltage below 9.6V is considered abnormal.
- The test result provided by the device includes the engine's current cranking voltage and cranking time.
- This is for the convenience of maintenance personnel, allowing them to quickly ascertain the status of the entire cranking system.
Screens show: "START ENGINE" [▶️], "RPM Detected", and results like "Time: 780ms", "Voltage: 10.13V", "Normal" [✔️].
Charging System Test
The test proceeds as follows:
- Select "Charging Test" and press ENTER to start the test.
- Note: Do not turn off the engine during the test. Follow the instructions displayed on the tester's screen. (See Figures)
- When the test is complete, the tester will display charging voltages under load and no load, ripple voltage, and charging test results. (See Figure 5)
Note: "No Output" means the charging system is not generating output (no charging voltage). If the battery is low, the vehicle will stop working. Check the alternator or contact an auto service center as soon as possible.
Screens show: "Ripple Test" (Turn off headlights and air conditioner, keep 10 seconds. Press ENTER continue), "Unloaded Test" (Turn off all devices, increase RPM to 2500-3000r/min and keep 10 seconds. Press ENTER continue), "Loaded Test" (Turn on headlights and air conditioner to the maximum, keep RPM idle for 10 seconds. Press ENTER continue), and "Charging Test" results: Unloaded: 14.39V, Loaded: 14.16V, Ripple: 15mV, Normal [✔️].
Maintenance and Repair
Please remember that incorrect repairs can cause serious damage to the device and may even endanger the user. If you have problems with the device, or if you lack experience or knowledge in repairing the device, it is recommended to consult a specialist or technical service. If the defect is due to manufacturing issues, you may benefit from warranty repair. Warranty repair may include repairing the defective component, replacing parts with new ones, or replacing the entire product if repair is not possible.
Maintenance and Cleaning
- Before cleaning, turn off the device.
- Wipe the device with a dry cloth. Do not use chemicals or water.
Disposal
Avoid disposing of the device in regular waste containers to prevent environmental pollution. Take the device to suitable electronic waste collection points or electronic equipment recycling centers.
