18
On-Board Systems
The purpose of this function is to allow the OBD II System Tester to control the
operation of vehicle component, test or system.
Certain manufacturers do not allow OBD II
System Testers to control vehicle systems. A
screen informing you that the vehicle does not
support on boards systems will be displayed
in these cases.
An example of a possible On-Board System application is a test mode that enables
the conditions required to conduct an evaporative system leak test, but does not
actually run the test.
To perform the On-Board Systems function,
select On-Board Systems from the OBD II
Function Menu then press the ENTER key.
A list of On-Board systems and components available for testing will be displayed if
supported by the test vehicle. Select a test and press the ENTER key to activate the
test. The OBD II System Tester informs you that the command was sent. The manu-
facturer is responsible to determine the criteria to automatically stop the test. Use the
vehicle service manuals for more detailed information on test procedures.
Press the BACK key to return to the OBD II Function Menu.
NOTE: If you get an Operating Error message, make sure the DLC adapter cable is
securely attached, and the ignition key is ON, then try again. If the problem
remains, refer to Section 4: On-Line Help and Trouble-Shooting Tips.
I/M Readiness
The purpose of the I/M (Inspection and Maintenance) Readiness function is to display
the current status of emissions-related systems required by OBD II regulations. The
operation of emission-related systems and components are verified using monitors. .
The scan tool will display the condition of vehicles OBD II Monitors. Monitors are
used by the vehicles PCM to check the proper operation of systems and components
as well as identifying out-of-range values. The PCM may perform a special test on a
system or component to complete its monitor. A vehicle may have to be operated
under certain conditions for the monitor test to be performed. If the vehicles PCM
loses power or the Erase Codes function has been performed, then the status of the
monitors will be reset.
To view the status of supported monitors,
select I/M Readiness from the OBD II Function
Menu and press the ENTER key.
NOTE: If you get an Operating Error message, make sure the DLC adapter cable is
securely attached and the ignition key is ON, then try again. If the problem
remains, refer to Section 4: On-line Help and Trouble-Shooting Tips.
11)On-Board Systems
`12)I/M Readiness ]
13)Tool Setup [
14)Tool Self-Test |
`11)On-Board Systems
12)I/M Readiness ]
13)Tool Setup [
14)Tool Self-Test |
Control of On-Board
Systems Unavailable
On This Vehicle.
Press a key to cont