KONNWEI KW808 OBD2 Diagnostic Scanner User Manual

1. Safety Precautions and Warnings

To prevent personal injury or damage to vehicles and/or the scan tool, read this instruction manual first and observe the following safety precautions at a minimum whenever working on a vehicle:

• Always perform automotive testing in a safe environment.
• Wear safety eye protection that meets ANSI standards.
• Keep clothing, hair, hands, tools, test equipment, etc. away from all moving or hot engine parts.
• Operate the vehicle in a well ventilated work area: Exhaust gases are poisonous.
• Put blocks in front of the drive wheels and never leave the vehicle unattended while running tests.
• Use extreme caution when working around the ignition coil, distributor cap, ignition wires and spark plugs. These components create hazardous voltages when the engine is running.
• Put the transmission in PARK (for automatic transmission) or NEUTRAL (for manual transmission) and make sure the parking brake is engaged.
• Keep a fire extinguisher suitable for gasoline/chemical/electrical fires nearby.
• Don't connect or disconnect any test equipment while the ignition is on or the engine is running.
• Keep the scan tool dry, clean, free from oil/water or grease. Use a mild detergent on a clean cloth to clean the outside of the scan tool, when necessary.

2. General Information

2.1 On-Board Diagnostics (OBD) II

The first generation of On-Board Diagnostics (called OBD I) was developed by the California Air Resources Board (ARB) and implemented in 1988 to monitor some of the emission control components on vehicles. As technology evolved and the desire to improve the On-Board Diagnostic system increased, a new generation of On-Board Diagnostic system was developed. This second generation of On-Board Diagnostic regulations is called "OBD II".

The OBD II system is designed to monitor emission control systems and key engine components by performing either continuous or periodic tests of specific components and vehicle conditions. When a problem is detected, the OBD II system turns on a warning lamp (MIL) on the vehicle instrument panel to alert the driver typically by the phrase of "Check Engine" or "Service Engine Soon". The system will also store important information about the detected malfunction so that a technician can accurately find and fix the problem. Here below follow three pieces of such valuable information:

1. Whether the Malfunction Indicator Light (MIL) is commanded 'on' or 'off';
2. Which, if any, Diagnostic Trouble Codes (DTCs) are stored;
3. Readiness Monitor status.

2.2 Diagnostic Trouble Codes (DTCs)

OBD II Diagnostic Trouble Codes are codes that are stored by the on-board computer diagnostic system in response to a problem found in the vehicle. These codes identify a particular problem area and are intended to provide you with a guide as to where a fault might be occurring within a vehicle. OBD II Diagnostic Trouble Codes consist of a five-digit alphanumeric code. The first character, a letter, identifies which control system sets the code. The other four characters, all numbers, provide additional information on where the DTC originated and the operating conditions that caused it to set.

2.3 Location of the Data Link Connector (DLC)

The DLC (Data Link Connector or Diagnostic Link Connector) is the standardized 16-cavity connector where diagnostic scan tools interface with the vehicle's on-board computer. The DLC is usually located 12 inches from the center of the instrument panel (dash), under or around the driver's side for most vehicles. If the Data Link Connector is not located under the dashboard, a label should be there telling the location. For some Asian and European vehicles, the DLC is located behind the ashtray and the ashtray must be removed to access the connector. If the DLC cannot be found, refer to the vehicle's service manual for the location.

2.4 OBD II Readiness Monitors

An important part of a vehicle's OBD II system is the Readiness Monitors, which are indicators used to find out if all of the emissions components have been evaluated by the OBD II system. They are running periodic tests on specific systems and components to ensure that they are performing within allowable limits.

Currently, there are eleven OBD II Readiness Monitors (or I/M Monitors) defined by the U.S. Environmental Protection Agency (EPA). Not all monitors are supported by all vehicles and the exact number of monitors in any vehicle depends on the motor vehicle manufacturer's emissions control strategy.

Continuous Monitors: Some of the vehicle components or systems are continuously tested by the vehicle's OBD II system, while others are tested only under specific vehicle operating conditions. The continuously monitored components listed below are always ready:

1. Misfire
2. Fuel System
3. Comprehensive Components (CCM)

Once the vehicle is running, the OBD II system is continuously checking the above components, monitoring key engine sensors, watching for engine misfire, and monitoring fuel demands.

Non-Continuous Monitors: Unlike the continuous monitors, many emissions and engine system components require the vehicle to be operated under specific conditions before the monitor is ready. These monitors are termed non-continuous monitors and are listed below:

1. EGR System
2. O2 Sensors
3. Catalyst
4. Evaporative System
5. O2 Sensor Heater
6. Secondary air
7. Heated Catalyst
8. A/C system

2.5 OBD II Monitor Readiness Status

OBD II systems must indicate whether or not the vehicle's PCM's monitor system has completed testing on each component. Components that have been tested will be reported as "Ready" or "Complete", meaning they have been tested by the OBD II system. The purpose of recording readiness status is to allow inspectors to determine if the vehicle's OBD II system has tested all the components and/or systems.

The powertrain control module (PCM) sets a monitor to "Ready" or "Complete" after an appropriate drive cycle has been performed. The drive cycle that enables a monitor and sets readiness codes to "Ready" varies for each individual monitor. Once a monitor is set as "Ready" or "Complete", it will remain in this state. A number of factors, including erasing of diagnostic trouble codes (DTCs) with a scan tool, can result in Readiness Monitors being set to "Not Ready". Since the three continuous monitors are constantly evaluating, they will be reported as "Ready" all of the time. If testing of a particular supported non-continuous monitor has not been completed, the monitor status will be reported as "Not Complete" or "Not Ready."

In order for the OBD monitor system to become ready, the vehicle should be driven under a variety of normal operating conditions. These operating conditions may include a mix of highway driving and stop and go, city type driving, and at least one overnight-off period. For specific information on getting your vehicle's OBD monitor system ready, please consult your vehicle owner's manual.

2.6 OBD II Definitions

• Powertrain Control Module (PCM): OBD II terminology for the on-board computer that controls engine and drive train.
• Malfunction Indicator Light (MIL): Malfunction Indicator Light (Service Engine Soon, Check Engine) is a term used for the light on the instrument panel. It is to alert the driver and/or the repair technician that there is a problem with one or more of vehicle's systems and may cause emissions to exceed federal standards. If the MIL illuminates with a steady light, it indicates that a problem has been detected and the vehicle should be serviced as soon as possible. Under certain conditions, the dashboard light will blink or flash. This indicates a severe problem and flashing is intended to discourage vehicle operation. The vehicle onboard diagnostic system can not turn the MIL off until the necessary repairs are completed or the condition no longer exists.
• DTC: Diagnostic Trouble Codes (DTC) that identify which section of the emission control system has malfunctioned.
• Enabling Criteria: Also termed Enabling Conditions. They are the vehicle-specific events or conditions that must occur within the engine before the various monitors will set, or run. Some monitors require the vehicle to follow a prescribed "drive cycle" routine as part of the enabling criteria. Drive cycles vary among vehicles and for each monitor in any particular vehicle.
• OBD II Drive Cycle: A specific mode of vehicle operation that provides conditions required to set all the readiness monitors applicable to the vehicle to the "ready" condition. The purpose of completing an OBD II drive cycle is to force the vehicle to run its onboard diagnostics. Some form of a drive cycle needs to be performed after DTCs have been erased from the PCM's memory. Running through a vehicle's complete drive cycle will "set" the readiness monitors so that future faults can be detected. Drive cycles vary depending on the vehicle and the monitor that needs to be reset. For vehicle specific drive cycle, consult the vehicle's Owner's Manual.
• Freeze Frame Data: When an emissions related fault occurs, the OBD II system not only sets a code but also records a snapshot of the vehicle operating parameters to help in identifying the problem. This set of values is referred to as Freeze Frame Data and may include important engine parameters such as engine RPM, vehicle speed, air flow, engine load, fuel pressure, fuel trim value, engine coolant temperature, ignition timing advance, or closed loop status.

3. Setup

3.1 Tool Description

• LCD DISPLAY: Indicates test results. Backlit, 128 x 64 pixel display with contrast adjustment.
• ENTER BUTTON: Confirms a selection (or action) from a menu. Starts recording live data under manual trigger mode.
• ESC BUTTON: Cancels a selection (or action) from a menu or returns to the menu. It is also used to setup system, exit DTC Lookup screen, or stop data recording when pressed.
• LEFT SCROLL BUTTON: When looking up DTC definitions, moves to previous character and views additional information on previous screens if DTC definition covers more than one screen; deselects all marked PID data when viewing or recording customized live data list; views previous frames of recorded data when playing back live data. It is also used to update DTC library when pressed.
• RIGHT SCROLL BUTTON: When looking up DTC definitions, moves to next character and views additional information on next screens if DTC definition covers more than one screen; selects/deselects PID data when viewing or recording customized live data list, and views next frames of data when playing back live data.
• UP SCROLL BUTTON: Moves up through menu and submenu items in menu mode. When more than one screen of data is retrieved, moves up through the current screen to the previous screens for additional data.
• DOWN SCROLL BUTTON: Moves down through menu and submenu items in menu mode. When more than one screen of data is retrieved, moves down through the current screen to next screens for additional data. It is also used as the language setup hotkey when pressed.
• HELP BUTTON: Provides help information when pressed.
• POWER SWITCH: Resets the scanner.
• OBD II CONNECTOR: Connects the scan tool to the vehicle's Data Link Connector (DLC).
• RUBBER BOOT: Protects the scan tool from drop, abrasion and etc.

3.2 External Power

External power for the scan tool is provided via the vehicle Data Link Connector (DLC). To turn on the scan tool:

1. Connect the OBD II Cable to the scan tool.
2. Find the DLC on the vehicle. A plastic DLC cover may be found for some vehicles and you need to remove it before plugging the OBD2 cable.
3. Plug the OBD II cable to the vehicle's DLC.

3.3 Product Setup

The scan tool allows you to make the following adjustments and settings:

• Language: Selects the desired language.
• Contrast adjustment: Adjusts the contrast of the LCD display.
• Unit of measure: Sets the unit of measure to English or Metric.
• Auto Power-Off: Sets automatic power-off limits.
• Beep Set: Turns on/off beep.
• Tool self-test: Checks if the LCD display and keyboard are working normally.

Settings of the unit will remain until a change to the existing settings is made.

To enter the setup menu mode:

From the keyboard: Press the ESC button to enter the System Setup menu. Follow the instructions to make adjustments and settings as described in the following setup options.

From the Main Menu: Use the UP/DOWN scroll button to select System Setup, and press the ENTER button. Follow the instructions to make adjustments and settings as described in the following setup options.

Language Setup

English is the default language.

1. From the System Setup menu, use the UP/DOWN scroll button to select Language, and press the ENTER button.
2. Use the UP/DOWN scroll button to select the desired language and press the ENTER button to save your selection and return to the previous menu.

Contrast Adjustment

1. From the System Setup menu, use the UP/DOWN scroll button to select Contrast, and press the ENTER button.
2. From the Contrast menu, use the UP/DOWN scroll button to increase or decrease contrast.
3. Press the ENTER button to save your settings and return to the previous menu.

Unit of Measurement

Metric is the default measurement unit.

1. From the System Setup menu, use the UP/DOWN scroll button to select Unit of Measure and press the ENTER button.
2. From the Unit of Measure menu, use the UP/DOWN scroll button to select the desired unit of measurement.
3. Press the ENTER button to save your selection and return to the previous menu.

Beep Set

The default setting is Beep On.

1. From the System Setup menu, use the UP/DOWN scroll button to select Beep Set and press the ENTER button.
2. From the Beep Set menu, use the UP/DOWN scroll button to select Beep ON or Beep OFF to turn on/off the beep.
3. Press the ENTER button to save your selection and return to the previous menu.

Tool Self-test

The Tool Self-test function checks if the display and keyboard are working properly.

A. Display test

1. From the System Setup menu, use the UP/DOWN scroll button to select Tool Self-test, and press the ENTER button.
2. Select Display Test from the Tool Self-test menu and press the ENTER button.
3. Press the ENTER button again to start the test. Look for missing spots in the solid black characters.
4. When completed, press the ESC button to return.

B. Keyboard Test

The Keyboard Test function verifies if the keys are functioning properly.

1. Use the UP/DOWN scroll button to select Keyboard Test from the Tool Self-test menu, and then press the ENTER button.
2. Press any key to start the test. When you press a key, the key name should be observed on the display. If the key name does not show up, then the key is not functioning properly.
3. If you press and hold the power switch, the key name does not show on the screen, but resets the scanner when powered by vehicle battery. If it does not restart the scanner or power off the scanner, the key is not working properly.
4. Double press the ESC button to return to the previous menu.

3.4 Tool Information

The Tool Information function allows viewing of some important information such as the serial number and software version number of the scanner.

1. From the Main Menu, use the UP/DOWN scroll button to select Tool Information and press the ENTER button.
2. View tool information on screen.

4. Operating Instructions

4.1 OBD II Diagnostics

When more than one vehicle control module is detected by the scan tool, you will be prompted to select the module where the data may be retrieved. The most often to be selected are the Powertrain Control Module [PCM] and Transmission Control Module [TCM].

CAUTION: Don't connect or disconnect any test equipment with ignition on or engine running.

1. Turn the ignition off.
2. Locate the vehicle's 16-pin Data Link Connector (DLC).
3. Plug the scan tool cable connector to the vehicle's DLC.
4. Turn the ignition on. Engine can be off or running.
5. Press the ENTER button to enter the Main Menu. Use the UP/DOWN scroll button to select Diagnostics from the menu.
6. Press the ENTER button to confirm. A sequence of messages displaying the OBD2 protocols will be observed on the display until the vehicle protocol is detected.

4.2 Reading Codes

Reading Codes can be done with the key on engine off (KOEO) or with the key on engine running (KOER).

• Stored Codes: Also known as "hard codes" or "permanent codes". These codes cause the control module to illuminate the malfunction indicator lamp (MIL) when an emission-related fault occurs.
• Pending Codes: Also referred to as "maturing codes" or "continuous monitor codes". They indicate problems that the control module has detected during the current or last driving cycle but are not considered serious yet. Pending Codes will not turn on the malfunction indicator lamp (MIL). If the fault does not occur within a certain number of warm-up cycles, the code clears from memory.

1. Use the UP/DOWN scroll button to select Read Codes from the Diagnostic Menu and press the ENTER button.
2. Use the UP/DOWN scroll button to select Stored Codes or Pending Codes from the Trouble Codes menu and press the ENTER button.
3. View DTCs and their definitions on screen. The control module number, sequence of the DTCs, total number of codes detected and type of codes (Generic or Manufacturer specific) will be observed on the upper right hand corner of the display.
4. If more than one DTC is found, use the UP/DOWN scroll button, as necessary, until all the codes have been shown up.
5. If retrieved DTCs contain any manufacturer specific or enhanced codes, a "Manufacturer specific codes are found! Press any key to select vehicle make!" message comes up prompting you to select vehicle manufacturer to view DTC definitions. Use the UP/DOWN scroll button to select the manufacturer and then press the ENTER button to confirm.

4.3 Erasing Codes

CAUTION: Erasing the Diagnostic Trouble Codes may allow the scan tool to delete not only the codes from the vehicle's on-board computer, but also "Freeze Frame" data and manufacturer specific enhanced data. Further, the I/M Readiness Monitor Status for all vehicle monitors is reset to Not Ready or Not Complete status. Do not erase the codes before the system has been checked completely by a technician.

This function is performed with key on engine off (KOEO). Do not start the engine.

1. Use the UP/DOWN scroll buttons to select Erase Codes from the Diagnostics Menu and press the ENTER button.
2. A warning message comes up asking for your confirmation. Review previously stored data thoroughly before erasing.
3. If you do not want to proceed with erasing codes, press the ESC button or use the LEFT/RIGHT scroll button to select NO to exit. A message of "Command Cancelled!" shows up. Wait a few seconds or press any key to return to the Diagnostic Menu.
4. Press the ENTER button to confirm. If the codes are cleared successfully, an "Erase Done!" confirmation message shows on the display. If the codes are not cleared, then an "Erase Failure. Turn Key on with Engine off!" message appears.
5. Press any button to return to the Diagnostic Menu.

4.4 Review Data

The Review Data function allows viewing of data from the last test recorded by the scan tool.

1. Use the UP/DOWN scroll button to select Review Data from the Main Menu, and press the ENTER button.
2. Use the UP/DOWN scroll button to select the desired item from the Review Data menu, and press the ENTER button.
3. Review selected data on screen. If no data from a previously tested vehicle is recorded, only Module Present data containing module ID and protocol type can be reviewed.

4.5 Live Data

The View Data function allows viewing of live or real-time PID data of the vehicle's computer module(s).

1. To view live data, use the UP/DOWN scroll button to select Live Data from the Diagnostic Menu and press the ENTER button.
2. Wait a few seconds while the scan tool validates the PID MAP.
3. Use the UP/DOWN scroll button to select View Data from the Live Data menu and press the ENTER button.
4. To view the complete set of data, use the UP/DOWN scroll button to select Complete Data Set from the View Data menu and press the ENTER button.
5. View live PIDs on the screen. Use the UP/DOWN scroll button for more PIDs if an up or down arrow appears on the screen. The number "x" to the right of the screen indicates the sequence of the highlighted item. If you want to view the full name of the highlighted PID, press the Help button. If the "G" icon appears when a PID is highlighted, it indicates graphic information is available. Press ENTER to view the graph.
6. To view customized PID data, use the UP/DOWN scroll button to select Custom Data Set from the View Data menu and press the ENTER button.
7. Observe on-screen instructions. Use the RIGHT button to deselect/select data parameters, and use the UP/DOWN scroll button to move up and down. Selected parameters are marked with solid squares. The number "x" to the upper right corner of the screen indicates the sequence of the highlighted item; and "#x" are the order that the parameters are selected and will be displayed. You are allowed to pick up a maximum of 18 PIDs. If the selected PIDs exceed 18, a "The selected data list is full!" message displays on the screen. If you want to deselect all marked items, press the LEFT button. A message comes up to ask for your confirmation.
8. Press the ENTER button to view selected PIDs on screen.

4.6 Recording Data

The Record Data function allows recording vehicle modules' Parameter Identification (PID) data to help diagnose intermittent vehicle problems. A recording includes 5 frames of live data before the trigger event and several frames after the trigger event.

There are two trigger modes used to record data:

• Manual Trigger: Allows the user to press the ENTER button to start recording.
• DTC Trigger: Automatically records PID data when a fault that causes a DTC to set is detected by the vehicle.

CAUTION: DO NOT try to drive and operate the scan tool at the same time! Always have another person operate the scan tool while driving.

1. To record live data, use the UP/DOWN scroll button to select Record Data from the Live Data menu and press the ENTER button.
2. To record a complete set of live data, use the UP/DOWN scroll button to select Complete Data Set from the Record Data menu and press the ENTER button.
3. Use the UP/DOWN scroll button to select a trigger mode and press the ENTER button.
4. Use the UP/DOWN scroll button to select a memory location and press the ENTER button. The asterisk (*) icon on the screen indicates that there is a previous recording in the memory location. If you select a location marked with an asterisk (*) icon, a message prompting to overwrite old recording displays. If you wish to proceed with overwriting the old recording, press the ENTER button; if you do not wish to overwrite it, use the LEFT/RIGHT button to select NO or press the ESC button to pick another memory location.
5. Observe on-screen instructions. If Manual Trigger is selected, the screen will show "Ready to record! Press [ENTER] to start recording...". If DTC Trigger is selected, the screen will show "Waiting for DTC to trigger recording...".
6. Wait for the DTC to trigger recording or press the ENTER button to start recording. Drive until a DTC is detected when DTC Trigger is selected. If no DTCs are detected, press the ESC button to exit recording.
7. The scan tool keeps recording PID data until the user presses the ESC button, the selected memory location is full, or it completes recording. A message prompting to playback data shows on the screen.

4.7 Playing Back Data

The Playback Data function allows viewing of previously stored PID data.

1. To playback recorded data, use the UP/DOWN scroll button to select Playback Data from the Live Data menu and press the ENTER button. You are also allowed to playback recorded data immediately after recording.
2. Use the UP/DOWN scroll button to select the memory location marked with an asterisk (*) icon. If there is no recording in the selected location, a message "Not Supported or Stored No Data" displays on the screen. For data stored in temporary cache, you do not have to select a memory location.
3. Use the UP/DOWN button to view recorded PIDs of each frame. The number "x/x" to the upper right corner of the screen indicates the total number of recorded frames and the sequence of the frame being displayed. Negative frames indicate data recorded prior to the trigger event, and positive frames indicate data recorded after the trigger event.
4. Use the LEFT/RIGHT button to view PIDs of next or previous frames.

4.8 Viewing Freeze Frame Data

1. To view freeze frame data, use the UP/DOWN scroll button to select View Freeze Frame from the Diagnostic Menu and press the ENTER button.
2. Wait a few seconds while the scan tool validates the PID MAP.
3. If retrieved information covers more than one screen, a down arrow will appear. Use the DOWN scroll button, as necessary, until all the data have been shown up. If there is no freeze frame data available, an advisory message "No freeze frame data stored!" shows on the display.
4. If you want to view the full name of a PID, use the UP/DOWN scroll button to select the PID, and press the HELP button.
5. Wait a few seconds or press any button to return to the previous screen.

4.9 Retrieving I/M Readiness Status

The I/M Readiness function is used to check the operations of the Emission System on OBD2 compliant vehicles. It is an excellent function to use prior to having a vehicle inspected for compliance to a state emissions program.

Some latest vehicle models may support two types of I/M Readiness tests:

• Since DTCs Cleared: Indicates the status of the monitors since the DTCs are erased.
• This Drive Cycle: Indicates the status of monitors since the beginning of the current drive cycle.

An I/M Readiness Status result of "NO" does not necessarily indicate that the vehicle being tested will fail the state I/M inspection. For some states, one or more such monitors may be allowed to be "Not Ready" to pass the emissions inspection.

• "OK": Indicates that a particular monitor being checked has completed its diagnostic testing.
• "INC": Indicates that a particular monitor being checked has not completed its diagnostic testing.
• "N/A": The monitor is not supported on that vehicle.

1. Use the UP/DOWN scroll button to select I/M Readiness from the Diagnostic Menu and press the ENTER button.
2. If the vehicle supports both types of tests, then both types will be shown on the screen for selection.
3. Use the UP/DOWN scroll button, as necessary, to view the status of the MIL light ("ON" or "OFF") and the following monitors: Misfire monitor, Fuel System Mon, Comp.Component, EGR, Oxygen Sens Mon, Catalyst Mon, EVAP System Mon, Oxygen Sen htr, Sec Air System, Htd Catalyst, A/C Refrig Mon.
4. If the vehicle supports the readiness test of "This Drive Cycle", a screen of the following displays: MIL Status, Misfire Monitor, Fuel System Mon, Comp. Component, Catalyst Mon, Htd Catalyst.
5. Press the ESC button to return to the Diagnostic Menu.

4.10 O2 Monitor Test

OBD2 regulations set by SAE require that relevant vehicles monitor and test the oxygen (O2) sensors to identify problems related to fuel efficiency and vehicle emissions. These tests are not on-demand tests and they are done automatically when engine operating conditions are within specified limits. These test results are saved in the on-board computer's memory.

The O2 Monitor Test function allows retrieval and viewing of O2 sensor monitor test results for the most recently performed tests from the vehicle's on-board computer.

The O2 Monitor Test function is not supported by vehicles which communicate using a controller area network (CAN). For O2 Monitor Test results of CAN-equipped vehicles, see chapter "On-Board Mon.Test".

1. Use the UP/DOWN scroll button to select O2 Monitor Test from the Diagnostic Menu and press the ENTER button.
2. Wait a few seconds while the scan tool validates the PID MAP.
3. Use the UP/DOWN scroll button to select an O2 sensor from the O2 Monitor Test menu and press the ENTER button. If the vehicle does not support the mode, an advisory message will be displayed on the screen.
4. View test results of the selected O2 sensor.

4.11 On-Board Monitor Test

The On-Board Monitor Test is useful after servicing or after erasing a vehicle's control module memory. The On-Board Monitor Test for non-CAN-equipped vehicles retrieves and displays test results for emission-related powertrain components and systems that are not continuously monitored. The On-Board Monitor Test for CAN-equipped vehicles retrieves and displays test results for emission-related powertrain components and systems that are and are not continuously monitored. Test and components IDs are determined by the vehicle manufacturer.

1. Use the UP/DOWN scroll button to select On-Board Mon. Test from the Diagnostic Menu and press the ENTER button.
2. Wait a few seconds while the scan tool validates the PID MAP.
3. From the On-Board Mon. Test menu, use the UP/DOWN scroll button to select a test to view and press the ENTER button. If the vehicle under test does not support the mode, an advisory message will be displayed on the screen.
4. For CAN-equipped vehicles, test results displayed can be as below: $OD TEST with MEAS, MIN, MAX, STS values.
5. Press the ESC button to return to the previous menus.

4.12 Component Test

The Component Test function allows initiating a leak test for the vehicle's EVAP system. The scan tool itself does not perform the leak test, but commands the vehicle's on-board computer to start the test. Different vehicle manufacturers might have different criteria and methods for stopping the test once it has been started. Before starting the Component Test, refer to the vehicle service manual for instructions to stop the test.

1. Use the UP/DOWN scroll button to select Component Test from the Diagnostic Menu and press the ENTER button.
2. From the Component Test menu, use the UP/DOWN scroll button to select the test to be initiated.
3. If the test has been initiated by the vehicle, a confirmation message will be displayed on the screen. Some vehicles do not allow scan tools to control vehicle systems or components. If the vehicle under test does not support the EVAP Leak Test, an advisory message is displayed on the screen.
4. Wait a few seconds or press any key to return to the Diagnostic Menu.

4.13 Viewing Vehicle Information

The Vehicle Info. function enables retrieval of Vehicle Identification No. (VIN), Calibration ID(s), Calibration Verification Nos. (CVNs) and In-use Performance Tracking on 2000 and newer vehicles that support Mode 9.

1. Use the UP/DOWN scroll button to select Vehicle Info. from the Diagnostic Menu and press the ENTER button.
2. An advisory message comes up to remind you. Wait a few seconds or press any key to continue.
3. Wait a few seconds while the scan tool reads vehicle information. If the vehicle does not support this mode, a message shows on the display warning that the mode is not supported.
4. View retrieved vehicle information on screen.
5. Press the ESC button to return to the previous menu.

4.14 Modules Present

The Modules Present function allows viewing of the module IDs and communication protocols for OBD2 modules in the vehicle.

1. Use the UP/DOWN scroll button to select Modules Present from the Diagnostic Menu and press the ENTER button.
2. View modules present with their IDs and communication protocols.

Video demonstrating the KONNWEI KW808 OBD2 Auto Scanner's features and multi-language support.

5. Maintenance

5.1 Cleaning the Scan Tool

No solvents such as alcohol are allowed to clean the keypad or display. Use a mild nonabrasive detergent and a soft cotton cloth. Do not soak the keypad as the keypad is not waterproof.5.2 Software Update

The unit is updateable via the Internet. Please refer to the official KONNWEI website for software update instructions and downloads.

6. Troubleshooting

6.1 Vehicle Linking Error

A communication error occurs if the scan tool fails to communicate with the vehicle's ECU (Engine Control Unit). You need to do the following to check:

• Verify that the ignition is ON.
• Check if the scan tool's OBD II connector is securely connected to the vehicle's DLC.
• Verify that the vehicle is OBD2 compliant.
• Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing.
• Verify the control module is not defective.

If the "LINKING ERROR" message does not go away, then there might be problems for the scan tool to communicate with the vehicle. Contact your local distributor or the manufacturer's customer service department for assistance.

6.2 Operating Error

If the scan tool freezes, then an exception occurs or the vehicle's ECU (Engine Control Unit) is too slow to respond to requests. You need to do the following to reset the tool:

• Press and hold the POWER button for at least 2 seconds to reset the scan tool.
• Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing.

6.3 Scan Tool Doesn't Power Up

If the scan tool won't power up or operates incorrectly in any other way, you need to do the following to check:

• Check if the scan tool's OBD II connector is securely connected to the vehicle's DLC.
• Check if the DLC pins are bent or broken. Clean the DLC pins if necessary.
• Check the vehicle battery to make sure it is still good with at least 8.0 volts.

7. Specifications

7.1 Vehicle Coverage

The KONNWEI KW808 OBDII/EOBD Scanner is specially designed to work with all OBD II compliant vehicles, including those equipped with the next-generation protocol Control Area Network (CAN). It is required by EPA that all 1996 and newer vehicles (cars and light trucks) sold in the United States must be OBD II compliant and this includes all Domestic, Asian and European vehicles.

A small number of 1994 and 1995 model year gasoline vehicles are OBD II compliant. To verify if a 1994 or 1995 vehicle is OBD II compliant, check the Vehicle Emissions Control Information (VECI) Label which is located under the hood or by the radiator of most vehicles. If the vehicle is OBD II compliant, the label will designate "OBD II Certified". Additionally, Government regulations mandate that all OBD II compliant vehicles must have a "common" sixteen-pin Data Link Connector (DLC).

For your vehicle to be OBD II compliant it must have a 16-pin DLC (Data Link Connector) under the dash and the Vehicle Emission Control Information Label must state that the vehicle is OBD II compliant.

KW808 supports both diesel and gasoline vehicles, as long as the car is compliant with standard OBDII protocols, with OBDII 16pins Diagnostic Port. Reads & clears generic and some manufacturer trouble codes.

• American (USA) cars: For Standard OBD2 Cars from 1996 to Now (e.g., Chrysler, Ford, GM, Jeep).
• European cars: For Standard OBD2 Cars from 2003 to Now (e.g., Alfa Romeo, SAAB, Acura, Opel, Audi, Seat, Peugeot, Bentley, Skoda, Daewoo, Benz, Daihatsu, Land Rover, BMW, Vauxhall, Citroen, Volvo, Fiat, VW, Ford, Jaguar).
• Japanese cars: For Standard OBD2 Cars from 2008 to Now (e.g., KIA, Isuzu, Honda, Mitsubishi, Hyundai, Dacia, Lexus, Mazda, Nissan, Subaru, Suzuki, Toyota).

Note: Does not support Russian Cars (VAZ, UAZ, LADA). Does not work with certain trucks (e.g., Ssangyong Actyon 2009-2017, Ssangyong Korando 2.0 TD Diesel 2013-2017, Ssangyong Kyron 2.0 Diesel 2010-2017, Ssangyong Rexton 2011-2017). Not compatible with Opel Corsa c 2004 1.3 CDTI, VW Golf 4 2002, Citroen C4/C5, Chevrolet cars, Renault Logon/Megane, Skoda Fabia, Skoda OCTAVIA.

8. User Tips

• Vehicle Compatibility: Before use, always check your vehicle's hood for a "VEHICLE EMISSION CONTROL INFORMATION" sticker to confirm OBD II compliance. The scanner is generally compatible with 1996+ US, 2003+ European, and 2008+ Japanese standard OBD2 vehicles.
• No Software Installation Needed: The KW808 is ready to use right out of the box, requiring no additional software installation.
• DTC Lookup: Utilize the built-in DTC lookup library to quickly understand diagnostic trouble codes without needing to search online.
• Language Selection: Easily switch between supported languages (English, French, German, Dutch, Spanish, Portuguese, Russian) via the System Setup menu for a more comfortable user experience.

9. Warranty and Support

9.1 Limited One Year Warranty

Konnwei warrants to its customers that this product will be free from all defects in materials and workmanship for a period of one (1) year from the date of the original purchase, subject to the following terms and conditions:

1. The sole responsibility of Konnwei under the Warranty is limited to either the repair or, at the option of Konnwei, replacement of the scan tool at no charge with Proof of Purchase. The sales receipt may be used for this purpose.
2. This warranty does not apply to damages caused by improper use, accident, flood, lightning, or if the product was altered or repaired by anyone other than the Manufacturer's Service Center.
3. Konnwei shall not be liable for any incidental or consequential damages arising from the use, misuse, or mounting of the scan tool. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
4. All information in this manual is based on the latest information available at the time of publication and no warranty can be made for its accuracy or completeness. Konnwei reserves the right to make changes at any time without notice.

9.2 Additional Resources

For further details, including a comprehensive PID list and in-use performance tracking data, please refer to the official user manual PDF: KONNWEI KW808 User Manual (PDF)

For more information, visit: WWW.KONNWEI.COM