Innova 3100j, Руководство пользователя, Страница: 36 / 108

Using the Diagnostic Tool
CODE RETRIEVAL PROCEDURE
34 3100j
6. The diagnostic tool will automatically
start a check of the vehicle’s computer
to determine which type of communica-
tion protocol it is using. When the
diagnostic tool identifies the computer’s
communication protocol, a communica-
tion link is established. The protocol
type used by the vehicle’s computer is
shown on the LCD display.
A PROTOCOL is a set of rules and procedures for
regulating data transmission between computers, and
between testing equipment and computers. As of this
writing, five different types of protocols (ISO 9141,
Keyword 2000, J1850 PWM, J1850 VPW and CAN) are in
use by vehicle manufacturers. The diagnostic tool
automatically identifies the protocol type and establishes a
communication link with the vehicle’s computer.
„
If the Diagnostic Tool fails to link to
the vehicle’s computer, a “Communi-
cation Error” message shows on the
Diagnostic Tool’s display.
- Ensure your vehicle is OBD2
compliant. See VEHICLES
COVERED on page 5 for vehicle
compliance verification information.
- Verify the connection at the DLC, and verify the ignition is ON.
- Turn the ignition OFF, wait 5 seconds, then back ON to reset
the computer.
- Press the POWER/LINK button to continue.
„
If the Diagnostic Tool cannot link to
the vehicle’s computer after three
attempts, the message “Contact
Technical Support” displays.
- Press the SYSTEM MENU
button to return to the System
Menu.
- Turn the ignition off, and discon-
nect the Diagnostic Tool.
- Contact Technical Support for assistance.
7. If the Diagnostic Tool can decode the
Vehicle Identification Number (VIN) for
the vehicle under test, the Vehicle
Information screen displays.
„ If the information shown is correct
for the vehicle under test, use the
UP and DOWN buttons, as
necessary, to highlight Yes , then
press the ENTER button. Proceed to step 10 .