Read Values/Activate

Here follows an example of how the "Read Values/Activate" function works. The example is based on selection of body system and to arrive here from
the main menu you should repeat what has been described in earlier examples.
To go to system level, select the desired system.





You are now at system level. Select "Read Values/Activate".





Here is the list of all read values that are available in the system concerned. The down arrow on the right at the bottom of the display indicates that the list consists of more values downward than can be
shown in the display all at once.

This example will begin with a look at all the available read values.

Step the cursor downwards with the down arrow key to see one new value at a time or press the selection key with the right arrow to scroll one full display at a time (corresponding to page up/down on a PC).

Press the right arrow key to scroll to the next display of read values.





The up arrow on the right at the top of the display indicates that the list consists of more values upward than can be shown in the display all at once.

Step the cursor upwards to see one new value at a time or press the selection key with the left arrow to scroll one full display at a time.

Press the right arrow key to scroll to the next display of read values.





Press the right arrow key to scroll to the next display of read values.





All the read values in the list have now been displayed. Every available display key is described below and explained with an example.





Activate
This example shows how the display key "Activate" works by activating "Beam on Relay".

Select the display key "Activate" to access the list of available activation commands.





Here is a list of all available actuators. Press the right arrow selection key to scroll to the next display of activation commands.





Press the right arrow selection key to scroll to the next display of activation commands.





Select "Beam on Relay".





"Beam on Relay" can be activated manually or automatically. Manual activation is set here, which is shown by an asterisk "*" next to the word "Manual" on the "Manual/ Auto" display key.





On/Off
When "Beam on Relay" is set for manual activation, it is activated by pressing the "On/Off"display key. Check that the headlamps are on dipped beam.

"Beam on Relay" can be turned on or off by pressing the "On/Off' display key. The asterisk will then move to indicate the appropriate setting.





Press the "On/Off" display key once again to switch off the headlamps.

Press "EXIT" to return to the list of activation functions.

Press "EXIT" once again to return to the read values list.





Display Values
If you want to see the read values at the same time as you carry out an activation, use the "Display Values" display key.

Press the "Display Values" display key to see the read values list and the activation function simultaneously.





Press the "Display Values" display key again to hide the read values list.





Manual/Auto
Press the "Manual/ Auto" display key to set the activation function in the automatic mode.





Automatic activation is set here, which is indicated by an asterisk next to the word "Auto" on the "Manual/ Auto" display key.

When the "Manual/ Auto" display key is pressed again, the Tech 2 reverts to manual setting of the activation function.





Activate
Press the "Activate" display key to start automatic activation of "Beam on Relay". Check that the headlamps are turned on/off throughout the entire activation period.

Automatic activation is used when you want to carry out longer activation during which the actuator is turned on and off at a given frequency, such as when diagnosing a fault in the wiring harness, for instance.





Activation continues until the rectangular box in the display is filled. The headlamps are turned on and off about once a second.





At the end of the activation session, the "Activate" and "Repeat 10 sec" display keys, which were hidden during the actual activation process, will reappear.





Repeat 10 sec
The "Repeat 10 sec" display key is used to change the duration of the activation period by 10 seconds at a time.

Press the "Repeat 10 sec" display key.





The activation time can be set at a maximum of 100 seconds.





Line Graph
Using the "Line Graph" function, the read values can be shown in graphic form, which is often practical when carrying out fault diagnosis. The read values are also updated faster in "Line Graph" than in list form.

On the basis of the list containing all available read values, an example is given below of how the "Line Graph" function can be used.

"Line Graph" is activated for one value at a time by marking the desired value in the read values list and pressing "ENTER".

"Line Graph" can also be activated by pressing the

"Line Graph" display key.

Select the "Line Graph" display key to reach the list of values which can be displayed as "Line Graph".





Select up to 3 items for display simultaneously with "Line Graph". Position the cursor on the desired value and press "ENTER" to select the value. The selected value will be marked with an asterisk "*" at the beginning of the line.

The selected value can be removed by positioning the cursor on it and pressing "ENTER". When 3 values have been selected, one of the values must be removed before a new value can be selected.

End selection by pressing the "OK" display key.

Select "Battery Voltage".

Scroll to the next part of the list by pressing the selection key with a right arrow.





Scroll to the next part of the list by pressing the selection key with a right arrow.





Scroll to the next part of the list by pressing the selection key with a right arrow.





Scroll to the next part of the list by pressing the selection key with a right arrow.





Select "Brake Lights Switch". Then press the "OK" display key to have the selected values presented as a "Line Graph".





Under the Line Graph on the left are the values which are shown while the continuous and broken lines on the left of the parameter name indicate which curve shows which parameter (value).

In this example the continuous line indicates battery voltage and the broken line shows the value of the brake lights switch. The minimum and maximum values on the vertical scale are differentiated in the same way.

The horizontal scale shows how many readings of the values in question have been made since the "Line Graph" function was activated.

The minimum and maximum values shown on the left of the vertical scale are set on the basis of experience and may be regarded as limits within which the value readings obtained should occur. However, a value need not necessarily be OK just because it is within the minimum and maximum limits.

In regard to the marked value, the maximum and minimum values obtained while running the current "Line Graph" function are shown at bottom left of the display. The present value is shown right at the bottom.

It is also possible to reset the minimum and maximum values to zero for the time elapsing since "Line Graph" was started, or since the last time they were reset to zero, by pressing the "Reset" display key.

To mark another value, press the "Select" display key or use the up and down arrow selection keys to move the cursor.

Updating of "Line Graph" is stopped and started by means of the "Stop/Run" display key, which means that the curves stop and start again as appropriate.

Press "EXIT" to return to the "Line Graph" list.

Press "EXIT" again to return to the read values list.





Select Group
An example of how the "Select Group" function can be used is given below. It is sometimes practical to group values of the same type in a list of their own. Updating speed also increases since the instrument has fewer values to check.

Press the "Select Group" display key to select the category of values that is to be shown in the read values list.





Select internal values to show the values that are used internally in the control module.

Select inputs to show which values the control module reads from its own sensors and which come from other control modules.

Select outputs to show only the values which are output from the control module concerned.

Select all to show all available values in the current system.

Press "EXIT" to return to the read values list.





More
Press the "More" display key to show other available display keys. The number of available display keys varies from one system to another.





Other available display keys are shown here. Press the "More" display key once again to see other available display keys. Since only 2 sets of display keys are available, the first set will be shown again when the "More" display is pressed.





Select Values
In certain cases you might want to look at several selected values simultaneously.

Press the "Select Values" display key to create your own list of read values in which only selected read values are included.





At the start all read values are selected. To remove an individual value, mark it and press "ENTER".

To remove all values, press the "Select None" display key. To select an individual value after this, mark the value and press "ENTER".

Press the "Select all" display key to select all read values again.

Press the "OK" display key to show the list of selected read values.





English/Metric
Press the "English/Metric" display key to switch between English and metric units of measurement.

Next time the Tech 2 is used, a setting which has been changed here will not remain changed. To change settings permanently, see the "Set Options" section.