For your safety, read this manual thoroughly before operating your
Scan Tool. Always refer to and follow safety messages and test
procedures provided by the manufacturer of the vehicle or equipment
being tested.
The safety messages presented below and throughout this user’s
manual are reminders to the operator to exercise extreme care when
using this test instrument.
Read All Instructions
Read, understand and follow all safety messages and instructions in
this manual and on the test equipment. Safety messages in this section
of the manual contain a signal word with a three-part message and, in
some instances, an icon.
Safety Messages
Safety messages are provided to help prevent personal injury and
equipment damage. All safety messages are introduced by a signal
word. The signal word indicates the level of the hazard in a situation.
The types of safety messages are.
Indicates a possible hazardous situation which, if not
avoided, will result in death or serious injury to
operator or bystanders.
Indicates a possible hazardous situation which, if not
avoided, could result in death or serious injury to
operator or bystanders.
Indicates a possible hazardous situation which, if not
avoided, may result in moderate or minor injury to
operator or bystanders.
Indicates a condition which, if not avoided, may result
in damage to test equipment or vehicle.
Page 8
Safety Precautions
!
Type Styles Used:
Safety messages contain three different type styles.
• Normal type states the hazard.
• Bold type states how to avoid the hazard.
• Italic type states the possible consequences of not avoiding the
hazard.
Icons used:
An icon, when present, gives a graphical description of a potential
hazard.
Example:
Engine systems can malfunction expelling fuel, oil
vapors, hot steam, hot toxic exhaust gases, acid,
refrigerant and other debris.
Safety goggles and protective gloves must be worn
by the operator and any bystanders. Even if everyday
eyeglasses have impact resistant lenses, they are
NOT safety glasses.
• Avoid making an accidental connection between the
battery terminals. Do not place uninsulated metal
tools on the battery.
• When removing battery cables, remove the ground
cable first.
• Avoid sparks when connecting or disconnecting
power leads to the battery.
• Make sure ignition is off, headlights and other
accessories are off and vehicle doors are closed
before disconnecting the battery cables.
-
This also helps prevent damage to on-board computer systems.
• Always disconnect the battery ground connections
before servicing electrical system components.
Explosion can cause injury.
Risk of poisoning.
• Use this Scan Tool in locations with mechanical
ventilation providing at least 4 air changes per hour.
Engine exhaust contains odorless gas which can be
lethal.
• Route the exhaust outside while testing with the
engine running.
• Block drive wheels before performing a test with
engine running.
• Unless instructed otherwise:
- set parking brake
- put gear selector in neutral for manual transmissions
- put gear selector in park for automatic transmissions
- disconnect release mechanism on the automatic
parking brake release for testing and reconnect when
testing is completed.
• Do not leave a running engine unattended.
A moving vehicle can cause injury.
Risk of equipment or circuit damage.
• Unless specifically directed by manufacturer, make
sure ignition is off before connecting or
disconnecting connectors or any vehicle electrical
terminals.
• Do not create a short between battery terminals with
a jumper wire or tools.
Improper equipment use can cause equipment or circuit
damage.
Misdiagnosis may lead to incorrect or improper repair
and/or adjustment.
• Do not rely on erratic, questionable, or obviously
erroneous test information or results.
- If test information or results are erratic, questionable,
or obviously erroneous, make sure all connections
and data entry information are correct and test
procedures were performed correctly.
- If test information or results are still suspicious, do
not use them for diagnosis.
Improper repair and/or adjustment may cause vehicle or
equipment damage or unsafe operation.
Some vehicles are equipped with air bags.
• Follow service manual warnings when working
around air bag components or wiring.
- If service manual instructions are not followed, an air
bag may deploy unexpectedly, resulting in injury.
- Note an air bag can still deploy several minutes after
ignition key is off (or even if vehicle battery is
disconnected) because of a special energy reserve
module.
This manual contains instructions for the use and setup of your Scan Tool. A
table of contents and glossary are provided to make this manual easy to use.
Some of the information shown in text or illustrations is obtained using optional
equipment. A Sales Representative can determine option availability.
This section contains a list of conventions used.
Safety Messages
Refer to Safety Precautions on page Safety - i.
Check Note
A check note provides additional information about the subject in the preceding
paragraph.
Example:
✓ English is the default measurement unit.
Equipment Tips and Lists
Equipment tips and lists provide information that applies to specific equipment.
Each tip is introduced by this icon
Example:
❒ Observe all vehicle and/or equipment manufacturer’s cautions and
warnings when testing with the Scan Tool.
r for easy identification.
1
Equipment Damage
Situations arise during testing that could damage the vehicle or the test
equipment. The word IMPORTANT signals these situations.
Failure to follow these instructions could damage the Scan Tool.
Page 18
Using This Manual
Functions and Selections
Diagnostic and tool functions performed by the Scan Tool are highlighted in
bold.
Example:
The View Data function allows you to view the vehicle’s parameter identification
(PID) data in real time.
1
Menus
The menus on the Scan Tool display are referenced in the procedures and are
highlighted in bold-italic text.
Example:
When the OBDII Function List menu displays, the Scan Tool is ready for use.
Questions and Responses
Messages and user responses are CAPITALIZED.
Example:
The Scan Tool displays the pending DTCs or a message stating SYSTEM PASS: NO FAULT DETECTED.
Manual References
Used to reference other sections of the manual. References include the Title
and page number (section-page).
Example:
For more information on DTCs, refer to “OBD II Diagnostic Trouble Codes
(DTCs)” on page 2-15
Screens
Certain help messages, information, and data that are displayed on the scan
tool are also shown in graphical text boxes. The screens are presented as
examples and may change as the software is updated.
Example:
Main Menu
Global OBD II
Domestic Vehicles
European Vehicles
Asian Vehicles
Review Data
Print Data
System Setup
The Scan Tool was developed by experts in the automotive service
industry to help diagnose vehicles and assist in troubleshooting
procedures.
The Scan Tool monitors vehicle events and retrieves codes from the
vehicle’s control modules to help pinpoint problem areas.
All information, illustrations and specifications contained in this manual
are based on the latest information available from industry sources at
the time of publication.
No warranty (expressed or implied) can be made for its accuracy or
completeness, nor is any responsibility assumed by the manufacturer
or anyone connected with it for loss or damages suffered through
reliance on any information contained in this manual or misuse of
accompanying product. The manufacturer reserves the right to make
changes at any time to this manual or accompanying product without
obligation to notify any person or organization of such changes.
Using the CD
✓ The included CD is NOT required to operate the Scan Tool
✓ Install the CD application prior to connecting the Scan Tool to the
PC.
2
✓ Some of the items included on the CD are:
❒ Manuals included with Scan Tool
❒ DTC lookup software
❒ Scan Tool update software
❒ Adobe Acrobat Reader Installer
❒ Print Capture
❒ Other product information
✓ To be able to use the included CD the PC must meet the following
minimum requirements:
❒ 486 PC
❒ 4 MB of RAM
❒ Microsoft Windows 98 SE, ME, 2000, and XP
❒ CD ROM Drive
❒ Adobe Acrobat Reader
The original on-board diagnostics (OBD I) lacked consistency in
communication and interface while allowing different interpretations
among vehicle manufacturers. Ford and Chrysler used different types
of engine control computers and data link connectors ( DLCs), and GM
varied the trouble codes and communication protocols from
year-to-year.
OBD II
2
On-board diagnostics version II (OBD II) is a system that the Society of
Automotive Engineers (SAE) developed to standardize automotive
electronic diagnosis.
Beginning in 1996, most new vehicles sold in the United States were
fully OBD II compliant.
✓ Technicians can now use the same tool to test any OBD II
compliant vehicle without special adapters. SAE established
guidelines that provide:
❒ A universal connector, called the DLC, with dedicated pin
assignments.
❒ A standard location for the DLC, visible under the dash on driver’s
side.
❒ A standard list of diagnostic trouble codes (DTCs) used by all
manufacturers.
❒ A standard list of parameter identification (PID) data used by all
manufacturers.
❒ Ability for vehicle systems to record operating conditions when a
fault occurs.
❒ Expanded diagnostic capabilities that records a code whenever a
condition occurs that affects vehicle emissions.
❒ Ability to clear stored codes from the vehicle’s memory with a
SAE has published hundreds of pages of text defining a standard
communication protocol that establishes hardware, software, and
circuit parameters of OBD II systems. Unfortunately, vehicle
manufacturers have different interpretations of this standard
communications protocol. As a result, the generic OBD II
communications scheme varies, depending on the vehicle. SAE
publishes recommendations, not laws, but the Environmental
Protection Agency (EPA) and California Air Resources Board (CARB)
made many of SAE’s recommendations legal requirements that vehicle
manufacturers were required to phase in over a three-year period.
Beginning in 1994, vehicles with a new engine management computer
( about 10% of each manufacturers fleet ) were supposed to comply
with OBD II standards. For 1995, OBD II systems were to appear on
about 40% of the new vehicles sold in the United States. Some of the
1994-1995 OBD II systems were not fully compliant, so the Government
granted waivers to give manufacturers time to fine-tune their systems.
Beginning in 1996, most of the new vehicles sold in the United States
were fully OBD II compliant.
The tables below highlight changes for GM, Ford, and Chrysler. If this
seems confusing, don’t worry. The Scan Tool makes it easy. Based on
the vehicle identification (VIN) information selected during Scan Tool
setup, the vehicle is automatically recognized. All you have to do is
choose the correct adapter cable and jumper wires (if necessary).
Details on adapter cables and jumper wires may be found in Data LInk
Connector on page 2-9.
2
GM On-Board Diagnostics
SystemYearsDescription
Most vehicles used the 12-pin ALDL (Assembly Line Data Link)
OBD I Control Module
OBD II Control Module
*
OBD II system is used on certain 1994-1995 vehicles equipped with a 2.2L, 2.3L, 3.8L, 4.3L or 5.7L
1994*-Present Complies with OBD II regulations and uses the J1962 DLC.
located under the dash on the driver side. Some 94-95 vehicles
used the 16-pin OBD II (J1962) data link connector (DLC), but
use the Historical application software. Refer to the vehicle’s
Vehicle Emission Control Information label.
Page 26
Getting Started
Ford On-Board Diagnostics
SystemLong NameYearsDescription
MCU
Microprocessor Control Unit 1980 –1991
EEC-IV
2
* EEC-V OBD II system used in 1994-1995 vehicles equipped with a 3.8L or 4.6L engine.
Electronic Engine Control,
Fourth generation
Mazda Electronic Control
MECS
System
Electronic Engine Control,
EEC-V
Fifth generation
Powertrain Electronic
PTEC
Controller
1984 –1995
1988 –1995
1994* – present
2000 – present
Used in police vehicles, containing carbureted
engines. Uses the MCU DLC.
Most Ford vehicles equipped with North
American engines. Uses the EEC-IV DLC.
Vehicles equipped with Mazda-sourced engines.
Uses MECS 6-pin and 17-pin DLCs.
Complies with OBD II regulations and uses the
OBD II J1962 DLC.
Complies with OBD II regulations and uses the
OBD II J1962 DLC.
Chrysler On-Board Diagnostics
SystemLong NameYearsDescription
Single Module Engine
SMEC
Controller
Single Board Engine
SBEC
Controller
OBD II
OBD II Powertrain
PCM
Control Module
Jeep/Truck Engine
JTEC
Controller
* In 1989, the SBEC system was installed in selected vehicles with 3.0L V6 engines.
** Some vehicles in 1995 were equipped with the OBD II PCM.
1989–1990
1989*–1995
1995**– present
1996– present
Used a 6-pin Serial Communication Interface (SCI)
DLC and has bidirectional capability.
Used two types of DLCs: a 6-pin SCI and a 6-pin LH
series.
The first to allow a tool to reset the EMR light on trucks.
Complies with OBD II regulations and uses the OBD II
J1962 DLC.
Complies with OBD II regulations and uses the OBD II
J1962 DLC.
The JTEC system is used on light-duty trucks and
Jeeps
The data link connector (DLC) allows the Scan Tool to communicate
with the vehicle’s computer(s). Before OBD II, manufacturers used
different DLC’s to communicate with the vehicle. use the proper DLC
adapter cable to connect the Scan Tool to the vehicle. Also, the vehicle’s
DLC may be found in several different places and have many different
configurations. The following describes the DLCs used by Ford, GM
and Chrysler. The DLC location and types for domestic vehicles can be
looked up in the charts in Appendix B - Data Link Connectors.
OBD II (J1962)
Beginning in 1996, vehicles sold in the United States use the J1962
(OBD II) DLC, a term taken from a physical and electrical specification
number assigned by the SAE (J1962). The DLC should be located
under the dashboard on the driver’s side of the vehicle. If the DLC is not
located under the dashboard as stated, a decal describing its location
should be attached to the dashboard in the area the DLC should have
been located.
Because the OBD II J1962 connector has power and ground, you only
need a single cable connection to the tool for both power and tool
communications. Attach the OBD II adapter cable to the extender cable,
(both supplied with the tool) to connect the tool. Certain pins in the
connector are reserved.
13 - Manufacturer Reserved
14 - CAN Low, J-2284
15 - L Line, ISO 9141-2 & ISO/DIS 14230-4
16 - Battery Power
8
16
Ford used three types of DLCs with their OBD I systems. Refer to
Appendix B - Data Link Connectors for the adapter cable needed for
your vehicle.
Use the cigarette lighter cable to provide power to the
Scan Tool for all systems.
The EEC-IV/MCU DLC is a large six-sided connector with a pigtail
connector. The pigtail connector is not used on MCU vehicles – leave
the pigtail unattached. The EEC-IV/MCU cable adapter is included with
the Scan Tool.
MECS vehicles (1988 –1995) use either a 6-pin (with pigtail) or a 17-pin
DLC. Use the MECS 6-pin adapter cable kit (CP9131) for both
configurations. The MECS adapter cable kit includes jumper wires to
connect to the MECS 17-pin DLC. The MECS adapter cable kit is
optional and must be purchased separately. Use the following diagrams
to connect the adapter cable.
Certain Ford Probes have a WHITE TACH
CONNECTOR located very close to the 6-pin
self-test connector and bundled in the same wiring
harness. This is not the self-test input (STI) pigtail.
6-Pin MECS
P/N CP9131
4
1
STI Pigtail
6
5
3
2
Clip to good
vehicle ground
Vehicle DLC
17-Pin MECS
STO
Connect the pigtail to the BLACK STI connector located farther back on
the wire harness. If the tool is connected to the WHITE tach connector,
serious damage may result and may void warranty. Refer to the
illustration.
Prior to1996, most GM vehicles used the 12-pin Assembly Line
Diagnostic Link (ALDL) DLC. The GM ALDL cable kit includes the ALDL
adapter and cigarette lighter power cable. This adapter cable is
included with the Scan Tool. In 1994 and 1995, certain GM vehicles
used the J1962 (OBD II) DLC, but are not OBD II compliant. Refer to
Appendix B - Data Link Connectors.
IMPORTANT
The ALDL DLCs are usually located
under the dashboard on the driver’s
side.
On Corvettes and Fieros, the DLC may
be located in the center console behind
the ashtray. Refer to service manual
for exact location. It may be in full view,
or it may be recessed behind a panel. An opening in the panel should
allow access to the recessed connector.
Use the cigarette lighter cable to provide 12V to the
tool
Prior to 1996, most Chrysler vehicles used either the serial
communications interface (SCI) or LH DLC. Refer to Appendix B - Data Link Connectors for DLC type and location. The SCI adapter
cable is included with the Scan Tool. The LH adapter cable (CP9130)
can be purchased from your dealer.
IMPORTANT
2
Serial Communications Interface SCI
LH
Use the cigarette lighter cable to provide 12V to the tool
when using the SCI adapter cable.
SCI
The SCI (serial communications interface) DLC
is a 6-pin connector located in the engine
compartment. The adapter cable to be used on
these vehicles is supplied with the tool. This
cable is labeled CHRY on the 15-pin DB style
connector and SCI on the vehicle end.
LH (P/N CP9130)
This DLC is used on LH platform vehicles. The
LH style DLC is a small, blue, rectangular 6-pin
connector located in the passenger
compartment below the dashboard to the right of
the steering column.
The LH Adapter Cable (CP9130) is optional and
must be purchased separately.
French and Spanish. The CD also includes a
DTC lookup program for looking up DTCs,
and language applications for reprogramming the Scan Tool in Spanish and French.
USB CableUsed to print and upgrade software depend-
ing on tool.
OBD II CableCommunicate between the vehicle and tool.
Also supplies power to the tool.
Carry CasePlace to store the Scan Tool when tool is
not in use.
Warrant y &
Registration
Card
GM Historic
Cable
Ford
EEC-IV/MC
U Cable
Chrysler SCI
Cable
Provides you with the ability to keep up to
date with the newest updates and technology available.
Used to communicate with all GM vehicles
using a 12-pin DLC.
Used to communicate with all Ford vehicles
that use the large 6-sided connector.
Used to communicate with all Chrysler
vehicles using the L-shaped 6-pin connector located in the engine compartment.
Used to attach the GM Historic cable, Ford
EEC- IV/MCU cable or Chrysler SCI cable
to the Scan Tool.
Provides power to the Scan Tool for vehicles that require the Ford EEC-IV/MCU
cable, GM Historic cable or Chrysler SCI
cable.
IncludedIncluded
OptionalIncluded
Page 38
Using The Scan Tool
✓ Replacement Parts are available from the manufacturer by
contacting customer service.
• Phone at 1-800-228-7667 (8:00 - 6:00 EST Monday - Friday).
Display
The display has a large viewing area displaying messages, instructions,
and diagnostic information.
✓ The back-lit liquid crystal display (LCD) is a 128 x 64 pixel display.
❒ Characters used to help operate the Scan Tool are:
3
[
Indicates cursor location.
Indicates information is available for an item or multiple items.
Indicates when Help is available.
\Indicates additional information is available on previous screen
by using the
]
Indicates additional information is available on next screen by
using
the DOWN
UP
arrow key.
arrow key.
Indicates internal batteries need replaced or are not installed.
Indicates beeper is enabled.
Indicates graphical viewing available.
GlobalOBDII
Domestic Vehicles
European Vehicles
Asian Vehicles
Review Data
Print Data
System Setup
?
Main Menu
Global OBD II
Keypad
The keypad is used to move through the different menus of the Scan
Tool. The Scan Tool’s software is designed for ease in operating and
navigating through menus.
An AC power adapter (not included) can be used to power the Scan Tool
when reprogramming from a personal computer or for off-vehicle
reviewing of codes and printing.12V AC-DC converters are available at
most PC and electronic stores.
✓ The Scan Tool is equipped to accept any
110 VAC - 12 VDC wall adapter with the
following specifications:
❒ 500 mA minimum current unregulated wall power adapter
❒ 5.5 mm outside diameter
❒ 2.5 mm inside diameter
❒ The inside tip is positive (+)
Scan Tool Power UP
1. Connect Power Source
•
Internal Battery
• AC Adapter, or cigarette lighter cable.
(9V Battery), or vehicle Power DLC
12 VGND
3
ON/OFF
2. Press and Hold
•
For 1 second until the Scan Tool turns on.
key
System Setup
✓ System Setup allows:
❒ Measurement units to be changed.
❒ Display contrast to be changed.
❒ Auto-Power off time to be changed.
❒ Scan Tool information to be viewed.
❒ Display to be checked.
❒ Operation of the keypad to be checked.
❒ Memory of the tool to be checked.
❒ Scan Tool to be upgraded, or programmed for a different
The Program Mode is used for
reprogramming the Scan Tool with
English, Spanish or French
languages. The Scan Tool is
programmed with English by
default.
The Program Mode is also used for
updating the Scan Tool. Instructions
are provided with upgrades.
System Setup
Be eper
Auto Power Off
Tool Information
Display Test
Keyboard Test
Memory Test
ProgramMode
Program Mode
Connecting The Scan Tool
To diagnose a vehicle, connect the DLC and power adapter (if
applicable) to the Scan Tool. Refer to “Data Link Connector (DLC)” on
page 2-9 of Getting Started.
If you just want to power up the tool to do self-tests, code lookup, review
or printing data from the last vehicle tested, then you do not need to
attach the cable to the DLC. The internal battery provides power for this
❒ Use LEFT or RIGHT arrow keys to scroll back and forth
through graph.
Page 55
Using The Scan Tool
✓ Different vehicles communicate at different speeds and support a
different number of PIDs. Therefore, the maximum number of frames
that can be recorded varies.
✓ Some vehicles wait a long period of time to store a DTC after a
driveability problem occurs. If the operator selected Trigger On Codes
when making a recording, the operator might not see any drastic
change in data parameters before and after trigger point.
3.Return to Review Data menu.
•Press
Print Data
BACK.
3
The Print Data function allows the printing of diagnostic information
stored in the Scan Tool.
✓ Scan Tool Print Data function has different types of data to print,
depending on vehicle selected. Refer to appropriate section of this
manual for what functions have data to print.
✓ The Scan Tool’s internal battery power can be used to print data.
✓ Make sure you have previously installed the PC software in Using the
CD.
✓ Launch Scanning Suite and then start printing application.
✓ Follow all instructions on PC.
✓ On GM Historic, Ford Historic and Chrysler vehicles the MIL (Blinky)
3
code may also be entered.
✓ Chrysler and GM vehicles may have an additional screen asking in
which system to look for a code.
✓ If definition could not be found (SAE or Enhanced), the Scan Tool
displays No DTC Definition Found. See Service Manual. If the DTC is
manufacturer specific the DTC is assigned to display. Refer to the
vehicle service manual for exact definition
✓ The first time the scan tool links to the vehicle, the communication
protocol is automatically detected, and is used until the Scan Tool is
turned off or another vehicle is diagnosed.
✓ If an Error Message displays, make sure the OBDII connector is
attached, and the ignition key is on. Cycle ignition key to off for 10
seconds, then on. This may be required to reset computer. If required,
select yes to try again. If problem still exists, refer to“
on page 9-2 of Troubleshooting.
✓ The Scan Tool keeps all data received from the last vehicle
selected until any of the following occurs:
Error Messages”
❒ A new vehicle is selected.
❒ The internal 9V battery is discharged or has been removed.
❒ Scan Tool is flash programmed to update software, or to change
language.
❒ Data from last vehicle tested is erased.
✓ On initial link to vehicle, Scan Tool checks the status of I/M Monitors
The View Data function allows real time viewing of the vehicle’s
computer module’s PID data. As the computer monitors the vehicle,
information is simultaneously transmitted to scan tool.
✓ View data allows the following items to be viewed on the scan tool:
❒ Sensor data
❒ Operation of switches
❒ Operation of solenoids
❒ Operation of relays
✓ View data can be shown as:
❒ Entire Data List
❒ Custom Data List
4
4
✓ Apart from Read Codes, View Data is the most useful diagnostic
function for isolating the cause of a vehicle operation problem.
✓ Multiple PIDs may be sent if vehicle is equipped with more than one
computer module (for example a powertrain control module [PCM]
and a transmission control module [TCM]). The Scan Tool identifies
them by their identification names (ID) assigned by manufacturer (i.e.
$10 or $1A).
✓ If one or more control module stops responding, the Scan Tool
displays a message.
❒ If continuing, dashes will replace data in right hand column.
❒ If no is selected, then the Scan Tool attempts to re-establish
communication with that module.
View Entire List.
✓ View Entire List shows all supported PID data for the vehicle being
– Review Data
–Print Data
– Code Lookup
–Tool Setup
✓ The Read Codes function allows the Scan Tool to read the DTCs from
the vehicle’s control modules. DTCs are used to help determine the
cause of a problem or problems with a vehicle. These codes cause the
control module to illuminate the malfunction indicator lamp (MIL)
when emission-related or driveability fault occurs. MIL is also known
as service engine soon or check engine lamp.
Pending Codes are also referred to as continuous monitor or maturing
4
4
codes. An intermittent fault causes the control module to store a code
in memory. If the fault does not occur within a certain number of
warm-up cycles (depending on vehicle), the code clears from memory.
If fault occurs a specific number of times, the code matures into a DTC
and the MIL illuminates or blinks. This function can be used with KOEO
or KOER
• Press
BACK.
The Pending Codes function is used to read any pending codes which
may be currently set.
✓ Pending Codes may be set by emission related powertrain
components and systems.
✓ Pending Codes faults do not automatically indicate a faulty
Read Codes
Pending Codes
Erase Codes
View Freeze Data
Review Data
Print Data
Code Lookup
Diagnostic Codes Menu
View Fre eze Data
4. Observe Command Sent message
is displayed.
•Press
5. Return to Diagnostic Codes Menu.
•Press
View Freeze Data
ENTER
ENTER
.
.
4
4
When an emission-related fault occurs, certain vehicle conditions are
recorded by the on-board computer. This information is referred to as
freeze frame data. View Freeze Data is a snapshot of the operating
conditions at the time of an emission-related fault.
✓ View Freeze Data can be overwritten by faults with a higher priority.
✓ If codes were erased, View Freeze Data may not be stored in vehicle
Items marked with “-” are covered in section 3 of this
manual. These items are not covered in this section.
❒ I/M Readiness
❒ Drive Cycle Monitor
❒ State OBD Check
❒ O2 Monitor Test
❒ Diagnostic Monitor Test
❒ On-Board Systems
❒ Vehicle Information
❒ Modules Present
– Review Data
–Print Data
–Tool Setup
Page 84
Global OBD II Diagnostics
I/M Readiness
The I/M Readiness (Inspection / Maintenance) function is used to view
a snapshot of the operations for the emission system on OBD II
vehicles.
✓ I/M Readiness is a very useful function. To guarantee no faults exist
make sure all monitors are ok or n/a and no DTC’s exist.
✓ Refer to the vehicles service manual for the drive cycle operation.
✓ During normal driving conditions, the vehicle’s computer scans the
emission system. After a specific amount of drive time (each monitor
has specific driving conditions and time required), the computer’s
monitors decide if the vehicles emission system is working correctly
4
4
or not as well as detecting out of range values. When the monitor’s
status is:
• ok - vehicle was driven enough to complete the monitor.
• inc (Incomplete) - vehicle was not driven enough to complete the
• n/a (Not Applicable)- vehicle does not support that monitor.
monitor.
✓ Depending on vehicle, disconnecting or a discharged battery may
erase DTCs and clear monitor status.
✓ Monitors may be cleared by:
❒ Erasing codes
❒ Vehicle control modules losing power
✓ I/M Readiness can be done with the KOER or KOEO.
Abbreviations and names for OBD II Monitors supported by the Scan
Tool are shown below. They are required by the United States
Environmental Protection Agency (EPA). Not all monitors are supported
by all vehicles
The Drive Cycle Monitor function is very similar to the I/M Monitors
though the Drive Cycle Monitor is used to view REAL TIME
of the Emissions System on OBD II vehicles.
✓ Drive Cycle Monitor continuously updates as the vehicle reports
operations of the Emission System.
✓ Refer to the vehicle service manual for the drive cycle operation.
✓ During normal driving conditions, the vehicle computer scans the
emission system. After a specific amount of drive time (each monitor
has specific driving conditions and time requirements), the
computer’s monitors will decide if the vehicle emissions system is
working correctly or not as well as detecting out a range of values.
When the monitor’s status is:
• “ok” - vehicle has been driven enough for function.
• “inc” (Incomplete) - vehicle was not driven enough to complete all of
the monitors.
• “n/a”(Not Applicable) - vehicle does not support that monitor.
operations
4
✓ Clear Monitors by:
❒ Erasing Codes.
❒ Vehicle Computer Module losing power (on some vehicles).
3.Depending on the Drive Cycle Monitors one of these 2 screens
will be present.
This Drive Cycle
Catalyst Mon inc
Htd Catalyst inc
Evap System Mon inc
Since DTCs Cleared
Catalyst Moninc
Htd Catalystinc
Evap System Moninc
4.Return to Special Tests Menu.
• Press
BACK key.
✓ The Scan Tool display is
continuously updated. Monitors that
are “ok” will disappear and only the
“inc” monitors will remain displayed.
Monitors designated “n/a” are not
displayed.
✓ When all Monitors are “OK” the following Screen is shown.
O2 Monitor Test
Diagnostic Monitor Test
On Board Systems
Vehicle Information
Special Tests Menu
O2 Monitor Test
From the Special Tests Menu:
1. Select
•Use
State OBD Check
UP
key until State OBD Check is
highlighted
•Press
2. View State OBD Check
Display.
3. Return to Special Tests
Menu.
•Press
O2 Monitor Test
or DOWN
ENTER
.
BACK
arrow
State OBD Check
MIL Status:ON
Codes Found:2
Monitors OK:3
Monitors Inc:3
Monitors N/A:5
4
OBD II regulations require applicable vehicles monitor and test oxygen
(O2) sensors to determine problems related to fuel and emissions. The
O2 Monitor Test allows retrieval of completed O2 sensors monitor test
results.
✓ The O2 Monitor Test is not an on-demand test. O2 sensors are not
tested when selected via the menu. O2 sensors are tested when
engine operating conditions are within specified limits.
✓ If the vehicle communicates using a controller area network (CAN),
O2 monitor tests are not supported by vehicle. A message is
displayed. See “
monitor data.
✓ O2 sensors are located before (upstream) and after (downstream)
catalyst(s). Sensors are named (xy) for their position to both cylinder
banks and catalysts.
❒ The O2 sensor for cylinder bank 1 has prefix 1y while O2 sensor
❒ The O2 sensor upstream of catalyst (closest to engine) has suffix
❒ For example, O2S21 is upstream O2 sensor for cylinder bank 2.
The following O2 Sensor Tests are available:
1) Rich-to-lean sensor threshold voltage
2) Lean-to-rich sensor threshold voltage
3) Low sensor voltage for switch time
4) High sensor voltage for switch time
4
4
5) Rich-to-lean sensor switch time
6) Lean-to-rich sensor switch time
7) Minimum sensor voltage test cycle
8) Maximum sensor voltage test cycle
9) Time between sensor transitions
10) Sensor period
11) Manufacturer specific tests
for cylinder bank 2 has prefix 2y.
x1 while O2 sensor downstream of catalyst has suffix x2. If
vehicle contains more catalysts, O2 sensor downstream of
second catalyst has suffix x3 and O2 sensor downstream of next
catalyst has suffix x4.
The Diagnostic Monitor Test function is useful after servicing or after
erasing a vehicle’s memory. Test results do not necessarily indicate a
faulty component or system.
✓ Non-CAN vehiclesDiagnostic Monitor Test receives test results for
✓ CAN vehicles Diagnostic Monitor Test receives test results for
✓ Vehicle manufacturer is responsible for assigning test and component
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4
From the Special Tests Menu:
1. Select
emission-related powertrain components and systems that are not
continuously monitored.
emission-related powertrain components and systems that are and
are not continuously monitored.
IDs.
Diag Mon Tests.
•Use
UP
or DOWN
key until Diag Mon Tests is
highlighted.
•Press
ENTER
.
arrow
Special Tests Menu
I/M Readiness?
Drive Cycle Monitor
State OBD Check
O2 Monitor Test
Diag Mon Tests
DiagMonTests
On-Board Systems
Vehicle Info
✓ Applicable Diagnostic Monitor Tests are displayed.
✓ The manufacturer is responsible for determining the criteria to
automatically stop test. Refer to appropriate vehicle service manual.
Vehicle Info
The Vehicle Info function allows the Scan Tool to request the vehicle’s
VIN number, calibration ID(s) which identifies software version in
vehicle control module(s), calibration verification numbers (CVN(s))
and in-use performance tracking.
✓ Vehicle Info function applies to model year 2000 and newer OBD II
compliant vehicles.
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4
✓ The Scan Tool cannot verify if data is correct for scanned vehicles.
✓ CVNs are calculated values required by OBD II regulations.
✓ The CVN calculation may take several minutes.
✓ CVNs are reported to determine if emission-related calibrations have
been changed. Multiple CVNs may be reported for a control module.
✓ In-use performance tracking, tracks performance of key readiness