Description of Operation

Cables, Connectors And Adapters
1. Diagnostics cable
2. Connector for external power sources
3. Cable RS232
4. Adapter DB9

Diagnostics Cable
Diagnostics cable with a 26-pin connector for plugging into the Tech 2 communications module and a connector at the other end for the various vehicle adapters.

NOTE: The Tech 2 has all the necessary connectors for Saab. Extra or replacement adapters can be purchased from the supplier.

RS232 Cable And DB9 Adapter
An RS232 cable and DB9 adapter are required for communication between the Tech 2 and a computer for the purpose of downloading data. The cable plugs into the RS232 port on the Tech 2.





Power Supply
When used in a car the Tech 2 receives power via the connector for the diagnostics cable. However, power can also be supplied via:
1. Battery cable
2. Cable for cigarette lighter socket 3
3. Wall outlet

These should be connected only to the connector at the vehicle end of the diagnostics cable (see illustration).

Connection to an extra vehicle or a vehicle that can supply current via the diagnostics cable causes no damage since its connection mechanically disconnects the internal power supply source. When not used in a vehicle (such as when the Tech 2 is being reprogrammed), the power supply can be connected either to the diagnostics cable or the connector on the VCI Module beside the diagnostic cable's connector (see illustration).

Battery Cable
The battery cable should be used when a separate power supply is needed and the cigarette lighter is not supplied with current when the ignition is switched off. When the battery cable is used, the ignition can be switched off without affecting the supply of current to the Tech 2. One end of the cable is fitted with a plug that plugs into the connector on the diagnostics cable and the other end is fitted with two battery clamps, one red (+) and one black H. The correct polarity is important. The cable incorporates a fuse holder with two fuses. If either of these fuses needs replacing, an identical fuse must be used.

Cable For Cigarette Lighter Socket
The cable for the cigarette lighter socket can also be used for supplying current from the vehicle. This cable has a plug at one end which is connected in the same way as the battery cable and a plug at the other end which goes into the cigarette lighter socket. The cable incorporates a fuse which is accessible on unscrewing the end of the plug for the cigarette lighter socket. If the fuse needs changing, an identical fuse must be used.

Wall Outlet
Current from the mains can be used via the transformer which is included in the Tech 2 kit. There are two mains units, one for Canada and the United States and one for the rest of the world.





Using the Tech 2
1. Display keys
2. Selection keys (with arrows)
3. Action keys
4. Function keys
5. Help key
6. Control keys

Display Keys
The four keys are connected to the boxes which can be shown at the bottom of the display. When a display key function is available, a box is shown which describes its function. If no boxes are shown, no functions are available.

Selection Keys (with Arrows)
Keys with up arrows and down arrows control the scrolling of marked text. The keys with arrows pointing left and right scroll an entire display at a time and correspond to "Page up/down" on a PC. Small arrows at top and bottom on the right-hand side of the display indicate whether more information can be presented.

Action Keys
The action keys "YES", "NO", "ENTER", and "EXIT" are used to execute a certain action or answer a certain question. They are also used to move forward and backward through the different menus.

Function Keys
The function keys "F0"-"F9" are used for special menu functions. Certain menu choices have an F number and a description. They can be used as an alternative to positioning the cursor on a line and pressing "ENTER".

Help Key
Pressing the help key "(?)" activates the help function for the current part of the Tech 2 system.

Control Keys
The Tech 2 is turned on and off with the "PWR" key. The "SHIFT" key is used in conjunction with the up and down arrow keys to vary the contrast of the display. When the "SHIFT' function is active the LED lights up.

NOTE: When the SHIFT function is turned on the rest of the keypad is blocked