JDiag FasDiag JD301 Manuale utente
FasDiag JD301/316
User Manual
OBDII Car Diagnostic Scanner
1. General Information
•On-Board Diagnostics (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
theon-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. Here below is an example to
illustrate the structure of the digits:
•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 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.
•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. For different
ignition type engines, the available monitors are different too.
The following monitors are to be used for spark ignition engines only
1. EGR System
2. O2 Sensors
3. Catalyst
4. Evaporative System
5. O2 Sensor Heater
6. Secondary air
7. Heated Catalyst
The following monitors are to be used for compression ignition
engines only:
1. EGR System
2. NMHC Catalyst
3. NOx aftertreatment
4. Boost pressure system
5. Exhaust gas sensor
6. PM filter
•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.
•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.
OBD II Drive Cycle - A specific mode of vehicle operation that
provides vehicle to the “ready” condition.
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.
•OBD II Modes of Operation
Here is a basic introduction to the OBD II communication protocol.
Mode byte: The first byte in the stream is the mode number. There
ar 9 modes for diagnostic requests, so this first byte is from 1 to 9.
The first byte in the response data bytes is this same number plus 64.
For example, a mode 1 request would have the first data byte = 1,
and the response would have the first data byte = 65.
2. Using the Scan Tool
•Tool Description
①OBD II CONNECTOR – Connects the scan tool to the vehicle's Data
Link Connector (DLC).
②YELLOW LED – Indicates there is a possible problem. A “Pending”
DTC is present and/or some of the vehicle's emission monitors
have not run their diagnostic testing.
③GREEN LED – Indicates that engine systems are running normally
(The number of monitors on the vehicle which are active and
performing their diagnostic testing is in the allowed limit, and no
DTCs are present).
④RED LED – Indicates there is a problem in one or more of the
vehicle's systems. The red LED is also used to show that DTCs are
present. DTCs are shown on the Scan Tool's display.In this case,
the MIL lamp on the vehicle’s instrument panel will light steady on.
⑤LCD DISPLAY – Indicates test results.
⑥IM BUTTON – I/M Readniess function.
⑦UP BUTTON – Scrolls up through menu items.
⑧EXIT BUTTON – EXIT function screen.
⑨ENTER BUTTON – Enter function screen.
⑩DOWN BUTTON - Scrolls down through menu items.
•Specifications
1) Display: 2.4 inch TFT color display
2) Operating Temperature: 0 to 60°C (32 to 140 F°)
3) Storage Temperature: -20 to 70°C (-4 to 158 F°)
4) External Power: 8.0 to 18.0 V power provided via vehicle battery
5) Dimensions:
Length Width Height
117 mm (4.61”) 72 mm (2.83”) 18 mm (0.71”)
6) NW: 0.18kg (0.39lb), GW: 0.21 kg(0.46lb)
•Accessories Included
A. User’s Manual - Instructions on tool operations.
B. OBD2 cable - Provides power to tool and communicates between
tool and vehicle.
•Navigation Characters
Characters used to help navigate the scan tool are:
• “#” -- Identifies the control module number from which data is
retrieved.
•“Pd” – Identifies a pending DTC when viewing DTCs.
•Keyboard
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.
•Power
The scan tool is powered via the vehicle Data Link Connector (DLC).
Just follow the steps below to turn on the scan tool:
A. Locate DLC on vehicle.
•A plastic DLC cover may be found for some vehicles and you
need to remove it before plugging the OBD2 cable.
B. Plug the tool's OBD II cable to the vehicle's DLC.
•System Setup
The scan tool allows you to make the following adjustments and
settings:
1. Language: Selects the desired language.
2. Configure Monitors: Sets the monitors you want to test.
3. Unit of measure: Sets the unit of measure to English or Metric.
4. Key Beep Set: Turns on/off key-press beep.
5. Status Beep Set: Turns on/off the I/M Readiness Status beep.
6. Tool Self-test: Checks if the LCD display, LED lamps and keyboard
are working normally.
7. Update Mode: Accesses the Update Mode.
8. Settings of the unit will remain until change to the existing settings
made.
To enter the Setup menu
Questo manuale è adatto per i seguenti modelli
1
Indice
Manuali Lettore di codici a barre popolari di altre marche
POSMicro
POSMicro Datalogic PowerScan D7100 Manuale utente
Marson
Marson MT780 Guida rapida alla configurazione
NCR
NCR RealPOS Manuale utente
Motorola
Motorola SE3300 Guida rapida alla configurazione
Element
Element P130BT Manuale utente
Motorola
Motorola Symbol LS3008 Manuale di installazione e funzionamento
