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.
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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
consists 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. Here
below is an example to illustrate the structure of the digits:
2
Identifying specific
malfunctioning
section of the
systems
1= Fuel and Air Metering
2= Fuel and Air Metering
3= Ignition System or Engine Misfire
4= Auxiliary Emission Controls
5= Vehicle Speed Control and Idle
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 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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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:
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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 power-train 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
or a disconnected battery, 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.
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For specific information on getting your vehicle’s OBD monitor
system ready, please consult your vehicle owner’s manual.
2.6 OBD II Definitions
Power-train 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 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 or
after the battery has been disconnected. 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
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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.
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3. Using the Scan Tool
3.1 Tool Description
① OBD II CONNECTOR -- Connects the scan tool to the
vehicle’s Data Link Connector (DLC).
②LCD DISPLAY -- Indicates test results. Backlit, 128 x 64 pixel
display .
③ ENTER/Exit BUTTON -- Confirms a selection (or action)
from a menu. Or returns to previous menu.
④ SCROLL BUTTON –Scrolls through menu items or
cancel an operation.
3.2 Specifications
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1) Display: Backlit LCD, 2 lines, 8 characters each line.
2) Operating Temperature: 0 to 50°C (32 to 122 F°)
3) Storage Temperature: -20 to 70°C (-4 to 158 F°)
4) External Power: DC12V provided via the vehicle’s battery
5) Dimensions:
Length Width Height
110 mm (4.33‖) 69 mm (2.72‖) 18 mm (0.71‖)
6) NW: 0.153kg (0.337b)
3.3 Product Features
1) Works with all 1996 and newer cars & light trucks that are
OBDII compliant (including the CAN, VPW, PWM, ISO and
KWP2000 protocols).
2) Reads and clears generic and manufacturer specific Diagnostic
Trouble Codes (DTCs) and turns off check engine light.
9) Stand-alone unit with no need for an additional laptop computer
to operate.
10) Small in size and conveniently fits in your palm.
11) Safely communicates with the on-board computer.
12) No batteries needed--powered via detachable OBD II cable.
3.4 Vehicle Coverage
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TheAutolink AL301 OBDII Scanner is specially designed to work
with all OBD II compliant vehicles, including those equipped with
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.
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4. Operating Instructions
4.1 Reading Codes
CAUTION: Don’t connect or disconnect any test equipment with
ignition on or engine running.
1. Turn the ignition off.
2. Locate the 16-pin Data Link Connector (DLC) and plug into the
Scan Tool cable connector to the DLC.
3. Wait for the LCD display to read ―C.A.N.OBD2‖.
4. Turn the ignition on. But do not start the engine.
5. Press the ENTER button. A sequence of messages showing the
OBD2 protocols will be observed on the display until the
vehicle protocol is detected.
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Not all the above messages will be displayed unless protocol of
the vehicle being tested is the last one—the ISO9141 protocol.
They will stop appearing after the vehicle protocol is detected
and a confirmation message of ―XXX Protocol‖ is displayed.
If a “LINK ERROR!” message shows up, turn the ignition
off for about 10 seconds, check if the Scan Tool’s OBDII
connector is securely connected to the vehicle’s DLC, and
then turn the ignition back to on. Repeat the procedure
from step 5. If the “LINK ERROR” message does not go
away, then there may be problems for the Scan Tool to
communicate with the vehicle.
6. Wait for the main menu to come up after a brief overview
displaying the scanning results with the total number of DTCs
and the overall I/M Monitor Status.
7. Select “DTC” from the main menu by pressing the ENTER
button.
If there are no Diagnostic Trouble Codes retrieved, the display
will indicate “NO CODES”.
If there are any Diagnostic Trouble Codes, then the total number
of the Fault Codes followed by that of the Pending Codes will
be reported on the display.
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8. Read the Diagnostic Trouble Codes by pressing the SCROLL
button.
The first code number will appear on the first line of the LCD
display, the numerical sequence of the code and the total
number of the codes stored will appear on the second line. To
view additional codes, press the SCROLL button to scroll, as
necessary, until all the codes have been shown up.
If the code retrieved is a pending code, a ―PD‖ will show on the
LCD display in the end.
To view previous codes, press the SCROLL button to scroll
through to the end, and then start from the first of the list.
9. Look up part 5 for Diagnostic Trouble Code Definitions. Match
the retrieved DTC(S) with those listed and read the definitions.
4.2 Erasing Codes
CAUTION: Erasing the Diagnostic Trouble Codes allows 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.
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1. If you decide to erase the DTCs, Select ―2. ERASE” from the
main menu by pressing the ENTER button.
If the Scan Tool is not connected or no communication is
established with the vehicle yet, then refer to “Reading Codes”
from 1 to 6 at Paragraph 4.1.
2. A message of ―ERASE? YES NO‖ comes up asking for your
confirmation.
3. If you do not want to proceed with erasing the codes, SCROLL
button to exit.
4. If you do wish to proceed to erase the codes, then press the
ENTER button.
5. If the codes are cleared successfully, an “ERASE DONE!”
message will show on the display. Press the ENTER button to
return to the main Menu list.
6. If the codes are not cleared, then an ―ERASE FAIL!‖ message
will appear. Press the ENTER button to return to the main
Menu list.
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HOT KEY: Pressing and Holding the SCROLL button for about 3
seconds will allow you to erase the DTCs more quickly than
through the main menu.
4.3 Retrieving I/M Readiness Status
IMPORTANT: 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.
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.
“YES”--All monitors supported on the vehicle have completed
their diagnostic testing and the MIL light is not on.\
“NO”--At least one monitor supported on the vehicle has not
completed its diagnostic testing, and (or) the ―Check
Engine‖( MIL) light is on.
“READY”—Indicates that a particular monitor being checked
has completed its diagnostic testing.
“Not RDY(NOT READY)”—Indicates that a particular monitor
being checked has not completed its diagnostic testing.
“N/A”—The monitor is not supported on that vehicle.
“→”-- A flashing Right Arrow indicates additional information is
available on the next screen.
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“←”-- A flashing Left Arrow indicates additional information is
available on the previous screen.
1. Select ―3. I/M‖ from the main menu by pressing the ENTER
button.
If the Scan Tool is not connected yet, then refer to
“Reading Codes” from 1 to 6 at Section 4.1.
2. Use the SCROLL button to view the status of the MIL light
(“ON” or “OFF) and the following monitors:
MISFIRE--Misfire monitor
FUEL--Fuel System Monitor
CCM--Comprehensive Components Monitor
CAT-- Catalyst Monitor
HCM--Heated Catalyst Monitor
EVAP-- Evaporative System Monitor
2AIR-- Secondary Air Monitor
A/C--A/C system Monitor
O2S-- O2 Sensors Monitor
HO2S--O2 Sensor Heater Monitor
EGR-- EGR System Monitor
3. Press the ENTER button to return to the main Menu.
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4.4 Viewing VIN Number
The View VIN function allows you to retrieve the Vehicle
Identification No. on 2002 and newer vehicles that support Mode 9.
1. Select ―4. VIN‖ from the main menu by pressing the ENTER
Button.
If the Scan Tool is not connected yet, then refer to
“Reading Codes” from step 1 to 6 at Section 4.1.
2. Use the SCROLL button to view additional digits of the
17-digit string.
“→” -- A flashing Right Arrow indicates additional digits of
VIN string are available on the next screen.
“← ”-- A flashing Left Arrow indicates additional digits of VIN
string are available on the previous screen.
3. Press the ENTER button to return to the main Menu.
4.5 Rescanning Data
The RESCAN function allows you to retrieve the most current data
stored in the ECM or to re-link to the vehicle if communication is
disconnected.
1.Select“5. RESCAN” from the main menu by pressing the
ENTER button.
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If the Scan Tool is not connected yet, then refer to
“Reading Codes” from 1 to 6 at Section 4.1.
2. Use either the SCROLL or ENTER button to return to the main
menu.
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5. Warranty and Service
5.1. Limited One Year Warranty
Autel 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 Autel under the Warranty is limited
to either the repair or, at the option of Autel, 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) Autel 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.
5.2. Service Procedures
If you have any questions, please contact your local store,
distributor or visit our website at www.auteltech.com.
If it becomes necessary to return the Scan Tool for repair, contact
your local distributor for more information.
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6. Diagnostic Trouble Code (DTC)
DTC
Definition
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve "A" Control Circuit/Open
P0006
Fuel Shutoff Valve "A" Control Circuit Low
P0007
Fuel Shutoff Valve "A" Control Circuit High
P0008
Engine Position System Performance Bank 1
P0009
Engine Position System Performance Bank 2
P000A
"A" Camshaft Position Slow Response Bank 1
P000B
"B" Camshaft Position Slow Response Bank 1
P000C
"A" Camshaft Position Slow Response Bank 2
P000D
"B" Camshaft Position Slow Response Bank 2
P000E
Fuel Volume Regulator Control Exceeded Learning Limit
P000F
Fuel System Over Pressure Relief Valve Activated
P0010
"A" Camshaft Position Actuator Circuit/Open Bank 1
P0011
"A" Camshaft Position - Timing Over-Advanced or System Performance Bank 1
P0012
"A" Camshaft Position - Timing Over-Retarded Bank 1
P0013
"B" Camshaft Position - Actuator Circuit/Open Bank 1
P0014
"B" Camshaft Position - Timing Over-Advanced or System Performance Bank 1
P0015
"B" Camshaft Position - Timing Over-Retarded Bank 1
P0016
Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A
P0017
Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B
P0018
Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor A
P0019
Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor B
P001A
"A" Camshaft Profile Control Circuit/Open Bank 1
P001B
"A" Camshaft Profile Control Circuit Low Bank 1
Definitions
The following Diagnostic Trouble Code Definitions lists provide
only Generic Diagnostic Trouble Codes. For Manufacturer Specific
Diagnostic Trouble Code Definitions, consult the vehicle’s service
manual or the enclosed CD software.
CAUTION: Parts or components should not be replaced based on
only a DTC without first consulting the vehicle service manual for
more information on possible causes of the fault as well as
required testing procedures.
OBDII Generic DTC Definitions
20
21
P001C
"A" Camshaft Profile Control Circuit High Bank 1
P001D
"A" Camshaft Profile Control Circuit/Open Bank 2
P001E
"A" Camshaft Profile Control Circuit Low Bank 2
P001F
"A" Camshaft Profile Control Circuit High Bank 2
P0020
"A" Camshaft Position Actuator Circuit/Open Bank 2
P0021
"A" Camshaft Position - Timing Over-Advanced or System Performance Bank 2
P0022
"A" Camshaft Position - Timing Over-Retarded Bank 2
P0023
"B" Camshaft Position - Actuator Circuit/Open Bank 2
P0024
"B" Camshaft Position - Timing Over-Advanced or System Performance Bank 2
P0025
"B" Camshaft Position - Timing Over-Retarded Bank 2
P0026
Intake Valve Control Solenoid Circuit Range/Performance Bank 1
P0027
Exhaust Valve Control Solenoid Circuit Range/Performance Bank 1
P0028
Intake Valve Control Solenoid Circuit Range/Performance Bank 2
P0029
Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
P002A
"B" Camshaft Profile Control Circuit/Open Bank 1
P002B
"B" Camshaft Profile Control Circuit Low Bank 1
P002C
"B" Camshaft Profile Control Circuit High Bank 1
P002D
"B" Camshaft Profile Control Circuit/Open Bank 2
P002E
"B" Camshaft Profile Control Circuit Low Bank 2
P002F
"B" Camshaft Profile Control Circuit High Bank 2
P0030
HO2S Heater Control Circuit Bank 1 Sensor 1
P0031
HO2S Heater Control Circuit Low Bank 1 Sensor 1
P0032
HO2S Heater Control Circuit High Bank 1 Sensor 1
P0033
Turbocharger/Supercharger Bypass Valve Control Circuit
P0034
Turbocharger/Supercharger Bypass Valve Control Circuit Low
P0035
Turbocharger/Supercharger Bypass Valve Control Circuit High
P0036
HO2S Heater Control Circuit Bank 1 Sensor 2
P0037
HO2S Heater Control Circuit Low Bank 1 Sensor 2
P0038
HO2S Heater Control Circuit High Bank 1 Sensor 2
P0039
Turbocharger/Supercharger Bypass Valve Control Circuit Range/Performance
P003A
Turbocharger/Supercharger Boost Control "A" Position Exceeded Learning Limit
P003B
Turbocharger/Supercharger Boost Control "B" Position Exceeded Learning Limit
P003C
"A" Camshaft Profile Control Performance/Stuck Off Bank 1
P003D
"A" Camshaft Profile Control Stuck On Bank 1
P003E
"A" Camshaft Profile Control Performance/Stuck Off Bank 2