Blue point Microscan III Manual do Utilizador descarregar pdf (Página 47)

Operations Main Menu

1— Code Tips

2— Mode Definitions

3— Return

Figure 6-12

Sample Help Menu

Code tips are arranged by groups and you need to navigate through a series of sub-menus to get

to the desired code. Tip information is often more than what fits on a single screen, scroll to view

the entire tip.

Selecting Mode Definitions opens a sub-menu of modes. Tap the desired mode to open the

definition. Scroll, if needed, to view the entire definition.

6.1.6 Select Protocol

This main menu option allows you to select which communication protocol the scan tool uses to

retrieve data from the ECM. For most instances, the scan tool software automatically determines

which protocol to use based on the signals received from the ECM.

When the scan tool is connected to the DLC it transmits an inquiry signal and looks for responses

from the vehicle to determine the protocol. In certain cases a non-emissions ECM may respond

first on a different communication line than what is used for the emissions-related ECMs. When

this happens, the scan tool cannot retrieve DTCs and other information because it is not receiving

the correct data.

The Select Protocol option allows you to choose the correct communications link in the rare

instances when this happens. Selecting opens a sub-menu that includes:

• Auto Select

• ISO 15765-4 (CAN)

• SAE J1939 (optional HD OBD-II)

• ISO 9141-2

• ISO 14230-4 (KWP2000)

• SAE J1850 (PWM)

• SAE J1850 (VPW)

Scroll and select from the menu.

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Blue point Microscan III Manual do Utilizador Página 47