Performance Tool W2977 User manual

OWNER’S MANUAL
Item Number W2977
WARNING
It is the owner and/or operators’ responsibility to study all WARNINGS, operating, and maintenance
instructions contained on the product label and instruction manual prior to operation of this product. The
owner/operator shall retain product instructions for future reference.
The owner and/or operator are responsible for maintenance, maintaining all decals or warning labels and
while in use, maintaining the unit in good working order. If the owner and/or operator are not fluent in English,
the product warnings and instructions shall be read and discussed with the operators’ native language by the
purchaser/owner or his designee. Make sure that the operator comprehends its contents. Safety information
shall be emphasized and understood prior to usage. The product shall be inspected per the operating
instructions.
Users of this product must fully understand these instructions. Each person operating this product must also
be of sound mind and body and must not be under the influence of any substance that might impair their
vision, dexterity or judgment.
Protect yourself and others by observing all safety information.
Failure to comply with instructions could result in personal injury and/or property damage!
If you encounter any problems or difficulties, please contact our customer service department at:
1-800-426-1262 between 6:30 a.m. and 4:30 p.m. Pacific time.
DIAGNOSTIC SCAN TOOL CAN OBDII

TABLE OF CONTENTS
2
Safety Precautions and Warnings........................................3
General Information .............................................................4
On-Board-Diagnostics (OBD) II .........................................4
Diagnostic Trouble Codes (DTCs) .....................................4
Location of the Data Link Connector (DLC)........................5
OBD II Readiness Monitors ................................................5
OBD II Monitor Readiness Status ......................................6
OBD II Terminology ............................................................7
Product Information ..............................................................8
Tool Description...................................................................8
Product Specifications.........................................................9
Product Features ................................................................9
Vehicle Coverage ...............................................................10
Operating Instructions..........................................................11
Reading Codes ..................................................................11
Erasing Codes ...................................................................14
Retrieving I/M Readiness Status........................................15
Viewing VIN Number..........................................................17
Rescanning Data ...............................................................18
Diagnostic Trouble Code (DTC) Definitions..........................19
Limited One Year Warranty..................................................48

SAFETY PRECAUTIONS AND WARNINGS
3
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 on drive wheels and never leave 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 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 with ignition on or
engine running.
• Keep the Scan Tool dry, clean and free from oil, water and grease.
Use a mild detergent on a clean cloth to clean the outside of the
Scan Tool, when necessary.

4
GENERAL INFORMATION
On-Board-Diagnostics (OBD) II
The first generation of On-Board Diagnostic (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 OBD I system increased, a new generation of On-Board
Diagnostics 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.
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 the control system which 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 is an example to illustrate the structure of the digits:

5
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. For some Asian
and European vehicles, the DLC is located behind the ashtray and
the ashtray must be removed to access the connector. Refer to the
vehicle’s service manual for the location if the DLC cannot be found.
OBD II Readiness Monitors
An important part of a vehicle’s OBDII 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.
DTC EXAMPLE
P0202
Systems Identifying
B = Body Sub-Systems specific
C = Chassis 1 = Fuel & Air Metering malfunctioning
P = Powertrain 2 = Fuel & Air Metering section of the
U = Network 3 = Ignition System or systems
Engine Misfire
4 = Auxiliary Emissions Controls
5 = Vehicle Speed Control
Code Type & Idol Controls
0 = Generic 6 = Computer Output Circuits
1 = Manufacturer 7 = Transmission Controls
Specific 8 = Transmission Controls