OBD Direct
OBD Health Check
87
7.2.2 Connector Information
Selecting Connector Information provides you access to vehicle data link connector
(DLC) location information.
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To find DLC location information:
1.
Select
Connector Information
.
2.
Select a vehicle manufacturer.
3.
Select a vehicle model.
DLC location information displays.
4.
Select
Continue
.
A menu option to start vehicle communication, or return to the previous menu
displays.
5.
Select
Yes
or
Return
.
7.2.3 Manual Protocol Selection
A communication protocol is a standardized way of transmitting data between an
ECM and a scan tool. Normally the scan tool automatically connects to an available
protocol, which displays on the connection message (
). Some vehicles
communicate using more than one protocol, therefor the Manual Protocol Selection
option is used to switch to a different protocol.
Selecting
Manual Protocol Selection
displays a warning message advising you to
make sure you know the correct protocol for the test vehicle before continuing. An
incorrect selection may activate warning lamps, and set CAN related faults on the
vehicle.
Selecting
OK
displays a menu of protocol options (
Select the desired protocol to continue.
Figure 7-4
7.3 OBD Health Check
The OBD Health Check option is intended as a time-saver, allowing you to quickly
access a few key global OBD-II services.
The OBD Health Check menu (
) options include the following
(descriptions are provided in the following sections):
•
Check global diagnostic trouble codes (DTCs)
•
Clear global diagnostic trouble codes (DTCs)
•
Check readiness monitors, see
•
Check MIL Status,
Figure 7-5
7.3.1 Global OBD II Code Check
Global OBD II Code Check displays any stored emission related generic DTCs
reported by the ECM. Two menu options are available:
•
Codes
•
Pending Codes
Codes
Codes displays a list of current emission related DTCs. OBD-II/EOBD Codes have
a priority according to their emission severity, with higher priority codes overwriting
lower priority codes. The priority of the code determines the illumination of the MIL
and the code erase procedure. Manufacturers rank codes differently, so expect to
see differences between makes.
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