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36
4.5 Generic OBDII Operations
OBDII/EOBD vehicle diagnosis option offers a quick way to check for DTCs, isolate the
cause of an illuminated malfunction indicator lamp (MIL), check monitor status prior to
emissions certification testing, verify repairs, and perform other emissions-related
services. The OBDII direct access option is also used for testing OBDII/EOBD-compliant
vehicles that are not included in the Diagnostics database. Diagnostics toolbar buttons
at the top of the screen are available for specific vehicle diagnostics. See Table 4-2
Diagnostics Toolbar Buttons for details.
4.5.1 General Procedure
To access the OBDII/EOBD diagnostics functions
1. Tap the Diagnostics application button from the MaxiPRO Job Menu. The
Vehicle Menu will appear.
2. Tap the EOBD button. There are two options for establishing communication
with the vehicle.
Auto Scan — select to establish communication using each protocol in
order to determine which one the vehicle is using.
Protocol — select to open a submenu of available protocols. A
communications protocol is a standardized way of data communication
between an ECM and a diagnostic tool. Global OBD may use several
different communications protocols.
3. Select a specific protocol under the Protocol option. Wait for the OBDII
Diagnostics Menu to appear.
4. Select a function to continue. Supported functions may vary by vehicle.
DTC & FFD
I/M Readiness
Live Data
On-Board Monitor
Component Test
Vehicle Information
Vehicle Status
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