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OBD-II/EOBD EOBD
($07) DTCs Detected During Last Drive
This test opens a record of any DTCs that set during the last completed drive cycle. Select to open
the DTC list.
($08) Request Control of On-board System
This service enables bidirectional control of the ECM. This service allows the Scanner to control
the operation of an onboard system, test, or component. Select a test and follow the on-screen
instructions.
($09) Read Vehicle Identification
The purpose of this service is to enable the Scanner to request and display vehicle-specific
information, such as the vehicle identification number (VIN), the calibration identification, and the
calibration verification number (CVN), of the test vehicle. Select a menu item to retrieve the
information. Select Return to go back to the menu.
($09) In-use Performance Tracking
This option displays the “In-use Performance Tracking” of data. It is a record of the number of
times each of the monitor tests have been completed. Select Return to go back to the menu.
($0A) Emission Related DTC with Permanent Status
This option displays a record of any “permanent” codes. A permanent status DTC is one that was
severe enough to illuminate the MIL at some point, but the MIL may not be on at the present time.
Whether the MIL was switched off by clearing codes or because the setting conditions did not
repeat after a specified number of drive cycles, a record of the DTC is retained by the ECM.
Permanent status codes automatically clear after repairs have been made and the related system
monitor runs successfully.
6.2.2 Select Communication Protocol
A communication protocol is a standardized way of data communication between an ECM and a
scan tool. Global OBD may use the following communication protocols:
• ISO 9141-2 (K-LINE)
• SAE J1850 PWM (Pulse Width Modulation)
• SAE J1850 VPW (Variable Pulse Width)
• ISO 14230-4 (Keyword Protocol 2000)
• SAE J2284/ISO 15765-4 (CAN)
Touch Select Communication Protocol to open a menu of options (Figure 6-8).
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