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OBD-II/EOBD Operations OBD Direct
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)
When the All Protocols setting is used the scan tool attempts to establish communication using
each protocol on order to determine which one the vehicle is broadcasting on.
6.1.3 Connector Information
This option opens a database of vehicle diagnostic connector locations that includes most makes
and models. The menu driven interface leads you quickly to the difficult to find test connector.
z To locate a vehicle diagnostic connector:
1. Select Connector Information from the System menu.
2. Select a manufacturer from the list presented.
3. Select a model from the list presented.
4. Select Continue and connector location information displays (Figure 6-5)
Figure 6-5 Sample connector location message
5. Select Continue to return to the System menu.
6.1.4 End of Diagnosis
Selecting this option terminates the communication link between the scan tool and the vehicle
ECM, and returns the display to the OBD Direct menu.
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