View data, Multiple group vehicles – Actron KAL9640B User Manual

Page 60

GM Historic (OBD I) Diagnostics

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View Data

The View Data function allows the user to view the vehicle Parameter

Identification Data (PIDs) in real time. As the PCM monitors PIDs, they are

simultaneously transmitted to the scan tool. The PIDs are continuously updated

at the PCM’s rate.
In addition to reading codes, View Data is the most useful diagnostic function

for isolating the cause of a vehicle operation problem. Viewing data is also used

for observing sensor data and the ON/OFF state of switches, solenoids, and

relays.
View Data can be performed with the ignition key On-Engine Off or Running.

Never operate the tool while driving. Have another person

assist with the operation of the tool.

Select View Data from the GM

Function List and press

ENTER. If a

Select Group screen does not appear,

skip the Multiple Group section and

continue.

Multiple Group Vehicles

Some vehicles display a Select Group

screen for viewing data. In these cases,

only one group of data can be viewed at

a time.

Select the type of data to view. Refer to

“Viewing Data” on page 3-9 for Entire

or Custom Data Lists.
After making a selection, press

ENTER

to establish a communication link.

Use the

UP/DOWN arrow keys to scroll

through the PIDs.

A Vehicle Data List header marks the

beginning.

Change the selection of Custom Data List parameters at any time by pressing

the

BACK key. This returns to the Custom Data List selection screen.

WARNING

GM Function List

1)Read Codes
2)Erase Codes

[

` 3)View Data

Select Group

Engine Group 1
Engine Group 2

` Engine Group 3 ~

Select Data To View?

1)Entire Data List

` 2)Custom Data List

Custom Data List
Codes Present Yes
1ST GEAR SW

[

A/F RATIO

18.8~