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programming. The required voltage differs by vehicle manufacturer. Consult vehicle
manufacturer for correct voltage to be maintained.
Occasionally a flash update procedure may not be completed properly. Common causes
of flash errors include poor cable connections between the tablet, VCI, and vehicle, the
vehicle ignition being switched off before the flash procedure is completed, or low vehicle
battery voltage.
If the process quits, recheck all cable connections to assure good communications and
initialize the flash procedure. The programming procedure will automatically repeat if the
previous operation does not succeed.
4.11 Generic OBDII Operations
The 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
for details.
4.11.1 General Procedure
To access the OBDII/EOBD diagnostics functions
1. Tap the
Diagnostics
button in the MaxiSys Job Menu. The Vehicle Menu appears.
2. Tap the
HD OBD
button. There are two options to establish 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 various protocols. A communication
protocol is a standardized way of data communication between an ECM and a
diagnostics tool. Global OBD may use several different communication
protocols.
3. Select a specific protocol if the
Protocol
option is selected. Wait for the OBDII
Diagnostic Menu to appear.
