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****** User Manual ******

KONNWEI KW310

CAN OBDII+EOBD Code Reader


**Specifications**
  - Ordered List Item 1) Display: Back lit, 128 x 64 pixel display with contrast adjustment
  - Operating Temperature: 0 to 60°C (32 to 140 FO)
  - Storage Temperature: -20 to 700C (-4 to 158 FO)
  - External Power: 8.0 to 18.0 V power provided via vehicle battery

**Accessories Included**

OBD II cable - Provides power to tool and communicates between tool and vehicle.

**Selects the desired language:**

English, French, German, Dutch, Spanish, Russian, Portuguese.

**1.0 General Information: __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:

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

**1.1 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 OLC is usually located 12 inches from the center of the instrument panel (dash), under or around the driver's side for most vehicles, If Data Link Connector is not located under dashboard, a label should be there telling 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.


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1.2 Diag nostic Trouble Codes (DTes)
OBO 11 Diagnostic Trouble Codes are codes that are stored by the on--board
computer diagnostic system in response to a problem found in the vehicle, Thesc
codes identify a particular problcm area and arc intcnded to provide you with a
guidc as to where a fault might be occurri ng within a vehicle. OBD II Diagnostic
Troublc Codes consist of a five-digit alphanumeric code, The frrst character, a
letter, idcntifies which control system sets the code, The other four characters, all
numbers, provide additional information on where thc DTe originated and the
operating conditions that caused it to set, Herc below is an examplc to illustratc
the structure of the digits:
Idcmifying specific malfunctioning section of the systems.

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1.3 OSDU Monitor Readiness Status
OBOn systems must indicate whct hc:..T or not the vehicle· s PCM, s monitor
system has completed testing on each componcnt. Components that havc been
tested will be reported as "Ready", or ;'Complete" , meaning they have been
tested by the OBD 11 system. The purposc 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.
Thc power train control module (PCM) sets a monitor to "Ready" or "Completc"
after an appropriatc drive cyclc 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 statc. A
number of factors, including erasing of diagnostic troublc codes (DTCs) with a
scan tool , can result in Readiness Monitors being set to "Not Ready" . Since the
three continuous monitors arc cons tantly eva luating, they will be reported as
;'Ready" all of the lime. 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 varicty of normal operating conditions. These operating conditions
may include a mix of highway driving and stop and go, c ity type driving, and at
least one ovcrnight-ofTpcriod, For specific information on getting your vehicle·
s OBD monitor system ready, please consult your vehicle owner· s manual.


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1.4 OSD U Definitions
Power train Control Module (rCM) OBO II terminology for the on-board
computer that controls engine and drive train.
Malfunction Indicator Light (MIL) -- Malfunction Indicator Light (Servicc
Enginc Soon, Check Engine) is a teon used for the light on the instrument panel. It
is to alert the driver andlor the repair techn ician that there is a problem with one or

morc of vehicle's systems and may cause emiss ions to exceed federal standards. If
the MIL illuminates with a steady light, it indicates that a problem has becn
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 on board
diagnostic system can not tum the MIL ofT until the necessary repairs arc
completed or the condition no longer exists.
DTC ··Oiagnostic Trouble Codes COTC) that identify which section of the
emission control system has mnlfunetioned.
Enabling Criteria •• Also termed Enabling Conditions. They arc the
vehicle-specific events or condi tions that must occur within the engi ne before the
various monitors will set, or run. Some monitors require the vehicle to follow a
prescribed "drive cycle" routine as part of the enabl ing criteria. Drive cycles vary
among vchicles and for each monitor in any particular vehicle.
OBO 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 OBO II drive cycle is to
force the vehicle to run its on board diagnostics. Some form of a drive cycle needs
to be performed after OTCs have been erased from the PCM's memory. Running
through a vehicle's complete drive cycle will "set" the readiness monitors so that
fu ture faults enn be detected. Drive cycles vary depending on the vehic le 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 fau lt occurs, the OBO II system
not only sets a code but also records a snapshot of the vehicle operating parameter
to help in identifying the problem. This set of values is referred to as Freeze Frame
Data and may includc t engi ne parameters such as engine RPM, vehicle speed, air
flow, engine lond, fuel pressure, fuel trim va lue, engine coolant s, ignition timing
advance, or closed loop start


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1.5 Vehic le Coverage
The KONNWEI KW310 OBDlIlEOBO Scanner is specially designed to work
with all OBO 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 OBO II compliant and this includes all Domestic, Asian and
European vehicles.
A small number of 1994 and 1995 model year gasoline vehicles arc OBO II
compliant. To verify if a 1994 or 1995 vehicle is OBO 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 vehiclc is OBD n complinnt, the
label wi ll designate ';OBO n Certified" • Additiona ll y, Government regulations
mandate that all OBD II compliant vehicles mllst have a "common" sixteen- pin
Data Link Connector (OLC).
For your vehicle to be OBO IJ compliant it must have a 16·pin OLC (Oatn Link
Connector) under the dash and the Vehicle Emission Control Information Label
must state that the vehicle is OBO II compliant.


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1.6 Product Troubles hooting
Vehicle LinkIng Error
A communication error occurs if the scan tool fai ls to communicate with the
vehicle's ECU (Engine Control Unit). You need to do the fo llowing to check up:
• Verify that the ignition is ON;
• Check if the scan tool ' s OBO II connector is securely connected to the vehicle's
OLC;
• Verify that the vehicle is 0802 compliant;
• Tum the ignition ofTand wait for about 10 seconds. Tum the ignition back to on
and continue the testing.
• Verify the control module is not defective.
Ol}eraling 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 Ihe tool:
• Press and hold POWER button for at least 2 seconds to reset the scan tool.
• Turn the ignition ofT and wait for about 10 seconds.
• Tum the ignition back to on and continue the testing. Scan tool doesn't power
uplfthe scan tool won't power up or operates incorrectly in any other way, you
need to do the following to check up:
• Check if the scnn tool's OBOII connector is sccurely connected to the veh icle's
OLC;
• Check if the OLC pins arc bent or broken. Clean the OLC pins ifnccessary.
• Check vehicle battery to make sure it is st ill good with nI lenst 8.0 volts.


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1.7 OODn Diagnostics
When more than one vehicle control module is detected by the scan tool, you will
be prompted to selcct the module where the data may be retrieved. Thc most often
to be selected nrc the Power train Control Module [PCM] and Transmission
Control Module (TCM].
CAlJfION: Don't connect or disconnect any test equipment with ignition on or
engine running.
I)Turn the ignition off.
2)Locate the vehicle's 16-pin Data Link Connector (OLC).
3)Plug into the scan tool cable connector to the vehicle's OLC.

4)Tum the ignition on. Engine can be off or running.
5)Press ENTER button to enter Main Menu. Use UPIDOWN scroll button to
select Diagnostics from the menu. "
Ifyou wish to erase the data, press ENTER button; if you do not want to erase the
data, press ESC or use UP/DOWN button to select NO and press ENTER to
continue. View a summary of system status (MIL status. DTC counts, Monitor
status) on screen. Wait a few seconds or press any key for Diagnostic Menu to
come up. If more than one module is detected, you will bc prompted to select a
module be fore testing. Use UPIDOWN scroll button to select a module and press
ENTER button.
6)Press ENTER button to confirm A sequence of messages displaying the OB02
protocols will be observed on the display until the vehicle protocol is detected.
• If the scan tool fails to communicate with the veh icle·s ECU (Engine Control
Unit), a "LINKING ERROR!" message shows up on the display.
• Verify that the ignition is ON;
• Check if the scan tool • s OBD IJ connector is securely connected to the
vehicle ' s DLC;
• Verify that thc vehicle is 0802 compliant;
• Tum the ignition off and wait for about 10 seconds. Turn the ignition back to
on and repeat the procedure from step 5.
If the "LINKING ERROR" message docs not go away, then there might be
problems for the scan tool to communicate with the vehicle. Contact your local
distributor or the manufacturers customer service department for assistance
7)You will be prompted to erase previous ly stored data.Review previously
storcd data thoroughly before erasing. If no data is stored in the scan tool, above
prompt will not show up.
8) lf you wish to erase the data, press ENTER button; if you do not want to crase
the data, press ESC or use UPIDOWN bulton to select NO and press ENTER to
conti nue.
9)Viewa summary of system status (MIL status, DTC counts, Monitor status)
on screen, Wait a few seconds or press any key for Diagnostic Menu to come up.


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1.8 Reading Codes
( I) Reading Codes can be done with the key on engine off (KOEO) or with the
key on engine running (KOER)
(2)Stored Codes are a lso known as "hard codes" or "permanent codes". These
codes cause the control module to illuminate the malfunction indicator lamp (MJL)
when emiss ion-related fault occurs.
(3)Pendi ng Codes are 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 (M IL). If .the fault docs not occur
within a certain number of warm-up cycles, the code clears from memory


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1.9 Erasing Codes
CAUTION: Erasing the Diagnostic Trouble Codes may allow the scan tool to
deletc not only the codes from the vehicle's on-board computer, but also "FrCC'.le
Frame" data and manufacturer specific enhanced data. Further, the 11M Readiness
Monitor Status for all vchicle monitors is reset to Not Ready or Not Complete
status. Do not erase the codes before the system bas been checked completely by a
technician.
• This function is performed with key on engine ofT{KOEO). Do not start the
engine.


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2.0 Live Data
( I ) The View Data function allows viewing of live or real time PLO data of
vehicle's computer modulc(S).
To view live data, use UP/DOWN scroll button to select Live Data from
Diagnostic Menu and press ENTER button.
(2) The Record Data function a llows recordi ng vehicle modules' Parameter
Identification (FlO) data to help diagnose intermittent vehicle problems. A
recording includes 5 frames of live data before trigger event and several frames
after trigger event.
(3 ) The Playback Data function allows viewing of previously stored PID
data.To playback recorded data, use UPIOOWN scroll button to select Playback
Data from Live Data menu and press RNTER button. Playing Back Data.The
Playback Data function allows viewing of previously stored PID data. You are
also allowed to playback recorded data immediately after recording.


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2.1 Viewing Freeze Frame Data:
(1 )To view freeze frame data. use UPIDOWN scroll button to select View , Freeze
Frame from Diagnostic Menu and press ENTER bunon.
(2)Wait a few seconds whi le the scan tool validates the PID MAP.
If retrieved in formation covers more than open screen, then a down arrow
will appear. Use DOWN scroll button, as necessary, until a ll the data have
been shown up.
(3)lfthere is no freeze frame data available, an advisory message "No
freeze frame data stored!" shows on the display.lf you want to view full
name of a PID, use UP/DOWN scroll button to select the PLD, and press
HELP button.
(4)Wait a few seconds of press any button to return to previous screen.


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2.2 Retrieving 11M Readiness Status
UM Readiness function is used to check the operations of the Emission System on
OB02 compliant vehic les. It is an excellent function to lise prior to ha ving a
vehicle inspected for compliance to a state emissions program

Some latest vehicle models may support two types of 11M Readiness tests:
DTCs Cleared - indicates status of the monitors since the DTCs are erased.
This Drive Cycle - indicates status of monitors since the bcginning of the current
drive cycle.
An 11M Readiness Status result of "NO" does not necessarily indicate that the
vehicle being tested will fail the state 11M inspection. For some states, one or more
such monitors may be allowed to be "Not Ready" to pass the emissions
inspection .
An 11M Readiness Status result of "NO" does not necessarily indicate that the
vehicle being tested will fa il the state lIM 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 ttmt a particular monitor being checked has not completed its
diagnostic testing.
"'NI A ., - The monitor is not supported on that vehicle.
Use UPIDOWN scroll button to select lIM Readiness from Diagnostic Menu and
press ENTER button.
If the vehicle supports both types of tests, then both types wi ll be shown on the
screen for selection.
Use UPIDOWN scroll button, as necessary, to view the status of the MIL light
("ON" or "OFF") and the follow ing monitors:
Misfire monitor - Misfire monitor
Fuel System Man - Fucl System Monitor
Camp. Component - Comprehens ive Components Monitor
EGR - EGR Systcm Monitor
Oxygen Sens Man- 02 Sensors Monitor
Catalyst Mon -Catalyst Monitor
EVAP System Man - Evaporative System Monitor
Oxygen Sen htr -02 Sensor Heater Monitor
Sec Air System -- Secondary Air Monitor
Htd Catalyst - Heated Catalyst Monitor
NC Refrig Man - NC system Monitor
MIL Status
Misfire Monitor
Fuel System Man
Comp.Component
Catalyst Man
Htd Catalyst
ON
NiA
NiA
NiA
NiA
NiA
If the vehic le supports readiness test of "This Drive Cycle",a screen of thc
following displays:

MIL Status ON
Misfire Monitor NIA
Fuel System Mon NIA
Comp.Componenl OK
Catalyst Mon NIA
Htd Catalysl NIA
Press ESC button to return to Diagnost ic Menu.


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2.3 Oxygen MonHor Test
OBD2 regu lations set by SAE require that relevant vehicles monitor and test the
oxygen (02) sensors to identify problems related to fuel efficiency and vehicle
emissions. These test's are not on-demand tests and they are done automatica lly
when engine operating conditions arc within speci fied li mits. These test results
are saved in the on-board computer's memory. The 02 Monitor Test function
allows retrieval and viewing of 02 sensor monitor test results for the most recenlly
pcrformed tests from the vehicle's on-board computer.The 02 Monitor Test
function is not supported by vehicles which communicate using a controll er area
network (CAN). For 02 Monitor Test results of CAN-equipped vehiclcs, see
chapter "On-Board Mon.Testl ".


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2.4 On-Board Monitor Tellt
The On-Board Monitor Test is useful after servicing or after erasing 8 vehicle's
control module memory. The On-Board Monitor Tcst for non-CAN-equipped
vehicles retrieves and displays test results for emission-related power 1m in
components and systems thai are not continuously monitored. The On-Board
Monitor Test for CAN-equipped vehicles retrieves and displays test results for
emission-related power tntin components and systems that are and are not
continuous ly monitored. Tesl and components lOs arc determined by the vehicle
manufacturer.


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2.S Compo nent Test
The Component Test function allows initialization a leak test for the veh icl e's
EV AP system. The scan tool itself does not perform the leak test, but commands
the vehicle's on-board computer to start the test. Different veh icle 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 tes!.

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2_6 Use UPIDOWN scro ll button to select Componenl Test from Viewing
Vehicle Information
The Vehicle Lnfo, function enables retrieval of Vehicle Identification No. (YIN),
Calibration lO(s), Calibration Verification Nos. (CV s) and In-use Performance
Tmcking on 2000 and newer vehicles that support Mode 9.


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


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2.8 Warranty and Service Limited One Year Warnmty
Konnwei \varrants to its customers that this product will be free from all defccts
in materials 'and workmanship for a period of one ( I) year from the dmc of the
original purchase. subj ect to the following terms and conditi ons:
I) Thc sole responsibility of konnwci under the Warranty is limited to either the
repair or, at the option of kOlUlwci, replacement of the code reader 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 othcr than
the Manufacturer's Service Center.
3) konnwei shall not be liable for any incidental or consequcntial damages
arising from the use, misuse, or mounting of the code reader. Some stales do not
allow limitations on how long an implied warranly lasts, so Ihe above limitations
may nOI apply to you.
4) All information in this manual is based on thc latest information availab le at
the time of publication and no \varranty can be made for : its accumcy or
completeness. Konnwei reserves the right to make changes at any time without
notice.


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2.9 Serv ice Procedures
If you have any questions, plcase conlact your local store, distributor or visit our
webs ite at www.konnwei.com
If II becomes necessary to rcturn the code reader for repair, contact your local
distributor for more information.


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3.0 Safely Precautions and Warnings
To prevent personal injury or damage to vehicles andlor the code rcader, read
this instruction manual fi rst and observe the following safety precautions at a
minimum whcnever working on a vehicle:
• Always perform automotive testing in a safe environment.
• Wcar safcty 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 wcll ventilated work are<!: Ex haust gases are poisonous.
• Put blocks in front of the drive wheels and never leave the vehicle unaucnded
whi le running tests.
• Use ext reme caution when working around the ignition coil, distributor cap,
ignil ion wires and spark plugs. These components create hazardous voltages
whcn the engine is running.
• Put Ihe tmnsmission in PARK (for automat ic transmiss ion) or NEUTRAL (for
manual transmission) and make surc the parking brake is engaged.
• Keep a fire cxt inguisher suitable for gasoline/chemical! clect rical flTes nearby.
• Don't connect or disconnect any test equipment while the ignition is on or the
engine is running.
• Keep the code readcr dry. clean, free from oil/water or grease.
• Use a mild detergent on a clean cloth 10 clean the outside of the code reader,
when necessary.