KONNWEI KW450 OBD2 Scanner User Manual

1. Safety Precautions and Warnings

To avoid injury or damage to vehicles and/or the scan tool, please read this user manual first and observe the following safety precautions when working on a vehicle:

1. Always perform vehicle tests in a safe environment.
2. Wear eye protection that complies with ANSI standards.
3. Keep clothing, hair, hands, tools, test equipment, etc., away from all moving or hot engine parts.
4. Operate the vehicle in a well-ventilated work area: exhaust fumes are toxic.
5. Place blocks in front of the drive wheels and never leave the vehicle unattended during tests.
6. Exercise extreme caution when working in the area of the ignition coil, distributor cap, spark plug wires, and spark plugs. These components generate dangerous voltages when the engine is running.
7. Set the transmission to PARK (for automatic transmission) or NEUTRAL (for manual transmission) and ensure the parking brake is engaged.
8. Keep a fire extinguisher ready for all test equipment while the ignition is on or the engine is running.
9. Keep the scan tool dry, clean, and free from oil/water or grease. If necessary, use a mild cleaning agent on a clean cloth to clean the exterior of the scan tool.

2. Description

The KONNWEI KW450 scanner features:

• OBD II Connector: Connects the scan tool to the vehicle's Data Link Connector (DLC).
• LCD Display: Shows menus and test results. It is a 2.8-inch color TFT display (320 x 240 dpi).

LED Indicators:

• Green LED: Indicates normal engine system operation, with active monitors within limits and no DTCs present.
• Yellow LED: Indicates a potential problem, with a "pending" DTC or some DTCs whose diagnostic tests are not completed.
• Red LED: Indicates a problem in one or more vehicle systems, or that DTCs are present. DTCs are displayed on the scanner's emission monitors that have not completed their diagnostic tests.

Button Functions:

• [I/M Readiness Key]: Quick test to check emission readiness status and drive cycle verification.
• [ESC Key]: Returns to the previous menu.
• [Scroll Left Key]: Moves the cursor left or scrolls up if more than one page is displayed.
• [Help Key]: Provides help information and code breaker function.
• [Scroll Up Key]: Moves the cursor up for selection.
• [OK Key]: Confirms a selection (or action) from a menu list.
• [Scroll Right Key]: Moves the cursor right or scrolls down if more than one page is displayed.
• [Scroll Down Key]: Moves the cursor down for selection.

USB Connection: Connects the scan tool to a PC for printing and updating.

3. Specifications

4. Connection and Settings

4.1 Position of the Data Link Connector (DLC)

The DLC (Data Link Connector or Diagnostic Connector) is typically a 16-pin connector used to interface diagnostic code readers with the vehicle's onboard computer. It is usually located within 12 inches of the center of the dashboard (instrument panel) on the driver's side for most vehicles. If the DLC is not under the dashboard, a label should indicate its position. In some Asian and European vehicles, the DLC may be located behind the ashtray, which must be removed to access the connector. If the DLC cannot be found, consult the vehicle's service manual for its location.

4.2 Setup

1. Turn off the ignition.
2. Locate the vehicle's 16-pin Data Link Connector (DLC).
3. Plug the OBD II cable into the vehicle's DLC.
4. Turn the ignition and engine on completely.
5. Upon completion, press the [ESC] key to return to the main menu.

CAUTION: Do not connect or disconnect test equipment with the ignition on or the engine running.

5. VW Diagnosis

This function is specifically designed for diagnosing the 101 electronic control systems of individual vehicle models. After selecting [for VW] or [for AUDI] and pressing [OK], the system displays the relevant screen.

5.1 Common Control Unit

This function allows reading common system fault codes, data stream, version information, and erasing fault codes.

5.2 All Control Units

This function allows reading all control unit fault codes, data stream, version information, and erasing fault codes.

5.3 System Control Unit

This function scans and reads the common system sequentially to detect and display any faults.

5.4 Gateway Scan

This function quickly scans the vehicle's electronic control units. Some vehicles have a dedicated Gateway system. The tool can retrieve information from the vehicle's electronic control units by communicating with the Gateway, identifying supported ECUs, and detecting any faults.

5.5 Special Functions

1. Oil Reset: Allows resetting the engine oil life system, which calculates an optimal oil change interval based on driving conditions and climate. This function should be performed when the service lamp illuminates after maintenance, or after changing engine oil or electronic devices that monitor oil life. The mileage or driving time needs to be reset to turn off the service lamp and enable the new maintenance cycle.
2. EPB Reset: Used when brake pads and the brake pad wear sensor are replaced. If the brake pad warning light is on, or if the brake pad sensor is short-circuited, or if the servo motor is replaced, a reset is necessary to avoid vehicle alarms.
3. DPF Regeneration: Used to remove PM (particulate matter) from the DPF filter through a continuous combustion oxidation mode (e.g., high-temperature heating, fuel additive, or catalyst-reduced particulate ignition) to stabilize performance. DPF regeneration can be performed if the exhaust back pressure sensor, particulate filter, fuel additive nozzle, or oxidation catalyst is replaced, or if the DPF regeneration MIL is on and maintenance is performed, or if the DPF regeneration control module is replaced.
4. Battery Adaptation: Allows resetting the vehicle battery monitoring unit to clear original fault information for low battery status and perform battery adaptation. This is necessary when the main battery is replaced to prevent the control module from recognizing incorrect information, which could disable auxiliary functions like auto start/stop, sunroof operation, or power windows. It also recalibrates the control module and driving sensor for accurate battery consumption monitoring.
5. SAS (Steering Angle Sensor) Reset: Resets the steering angle sensor to determine the relative zero point position for straight-line driving. This is required after replacing the SAS sensor, mechanical steering components (steering gear, steering column, tie rod, steering knuckle), performing a four-wheel alignment, or restoring the vehicle body.
6. Injector Coding: Functions performed after replacing fuel injectors, including generating a new code for a refurbished injector or when the injector is replaced.
7. Throttle Body Adjustment: Adjusts the throttle body angle. This is performed after replacing the electronic control unit, after turning off the electronic control unit, after replacing the throttle body housing, after replacing or disassembling the intake manifold, or after cleaning the throttle body housing.
8. Suspension: Adjusts the air suspension height. This function applies only to models with an air suspension system and specific chassis types (VIN seven or eight digits). It is not applicable to Volkswagen Touareg (7L), Audi A6 (4F), Audi A8 (4E), Audi Q7 (4L), Audi A6 (C5, 4B) station wagons.
9. Headlight Adjustment: The headlight must be adjusted under specific conditions, such as after reinstalling or reprogramming the headlight range control unit, installing a new headlight after one was removed, replacing the headlight range adjustment servo motor, replacing the rear left or front left vehicle height sensor, installing a new vehicle height sensor bracket, or replacing the vehicle subframe or suspension arm (with vehicle height sensor).

6. OBDII/EOBD Engine System Diagnosis

6.1 Vehicle Coverage

The scan tool is designed for all OBD II-compliant vehicles, including those with the Control Area Network (CAN). The EPA mandates that all 1996 and newer vehicles (passenger cars and light-duty trucks) sold in the USA must be OBD II-compliant, covering American, Asian, and European vehicles. Some gasoline vehicles from 1994 and 1995 are also OBD-compliant. To verify OBD II compliance for 1994-1995 vehicles, check the VECI (Vehicle Emission Control Information) label under the hood or near the radiator. If the vehicle is OBD II-compliant, the label will state "OBD II Certified." Government regulations also require all OBD II-compliant vehicles to have a "common" 16-pin Data Link Connector (DLC). For OBD II compliance, a 16-pin DLC must be present under the dashboard, and the vehicle's emission control information label must confirm OBD II compliance.

6.2 OBDII Diagnostic Menu

This option provides a quick way to check for DTCs, isolate the cause of the Malfunction Indicator Lamp (MIL), check the status of monitors before emissions certification testing, verify repairs, and perform other emission-related services.

After selecting [Diagnosis] and pressing [OK], the system displays the diagnostic menu, which includes:

• Read Codes
• Erase Codes
• I/M Readiness
• Data Stream
• Freeze Frame
• O2 Sensor Test
• On-Board Monitoring
• EVAP System Test

When the system is connected to the vehicle's ECU, the following screen is displayed.

6.3 Functions:

1. Read Codes: Used to determine which section of the exhaust emission control system is malfunctioning.
2. Erase Codes: After reading codes retrieved from the vehicle and performing necessary repairs, this function erases the codes from the vehicle. Ensure the vehicle's ignition key is in the ON position with the engine off before using this function.
   • Note A: Before performing this function, ensure you retrieve and record the fault codes.
   • Note B: After erasing, retrieve the fault codes again or turn the ignition on and retrieve them again. If fault codes still exist, resolve the code with the help of a factory diagnostic manual, erase the code, and check again.
3. Real-time Data: Retrieves and displays real-time data and parameters from the vehicle's ECU.
4. Freeze Frame Display: When an emission-related fault occurs, specific vehicle conditions are recorded by the onboard computer. This information is called freeze frame data and is a snapshot of operating conditions at the time of the emission-related fault.

   Note: If DTCs are erased, freeze frame data may not be stored in the vehicle's memory depending on the vehicle.

5. I/M Readiness: Refers to inspection and maintenance mandated by the government to meet federal standards for clean air. I/M Readiness indicates whether the vehicle's various emission-related systems are functioning properly and are ready for inspection and maintenance tests. The purpose of the I/M Readiness monitor status is to indicate which vehicle monitors have performed and completed their diagnostics and testing, and which have not yet performed and completed the testing and diagnostics of their designated sections of the vehicle's exhaust system. The I/M Readiness monitor status function can also be used (after a fault repair has been performed) to confirm that the repair was performed correctly, and/or to check the status of the monitor run.
6. O2 Monitor Test: The results of the O2 sensor test are not live values but the results of the ECU's last O2 sensor test for live O2 sensor values. Not all test values are applicable to all vehicles, so the generated list will vary by vehicle. Additionally, not all vehicles support the O2 sensor screen.
7. On-Board Monitoring Test: This function can be used to read the results of on-board diagnostic monitoring tests for specific components/systems.
8. Component Test: With the component test function, you can initiate a leak test for the vehicle's component system. The tool does not perform the leak test itself, but signals to the vehicle's onboard computer are intended to initiate the test. Before using the system test function, consult the vehicle's repair manual to determine the procedures required to complete the test.
9. Vehicle Information: This option displays vehicle information such as VIN (Vehicle Identification Number), CID (Calibration ID), and CVN (Calibration Verification Number).
10. Battery Test: (No specific description provided in OCR, but implies a battery testing function).
11. Available Modules: This option displays the vehicle communication protocol type.
12. DTC Lookup: With this option, you can enter a fault code and display its detailed description.
13. Data Review: With this option, errors can be stored, and data sets can be played back.
14. Data Print: With this option, the saved fault code can be uploaded to the computer.

7. Update & Upgrade

7.1 Update Tool Software

To update your tool, you will need the following items:

1. Scan Tool
2. A PC or Laptop with USB connections
3. USB Cable

Update Procedure:

1. Download the UPlink.exe application from the KONNWEI website: www.konnwei.com
2. Run UPlink.exe on your computer (Mac iOS and Linux are not compatible).
3. Press any key until the USB cable is connected to the computer, then release it after the tool displays the "Update Mode" message.
4. Open the UPLINK software, click "Check Update", download the upgrade file from the internet, and update it to the tester tool.
5. Wait a few minutes for the update to complete successfully.
6. After the update is finished, restart the tester tool to complete the entire update.

Note: If you have made an incorrect selection and the tool is not functioning correctly, you may need to update the programs. Press and hold any key on the tool for an extended period and simultaneously connect the tool to the computer via USB. The USB cable will force the tool into update mode to update the program.

7.2 Service Procedures

If you have questions, please contact your local store, dealer, or visit the KONNWEI website at www.konnwei.com. If it becomes necessary to send the tool for repair, contact your local dealer for more information.