Tech 2 menu structure

/ 9-3 (9400) / 1999 / 3. Electrical System / Bus and diagnostics communication / Fault diagnosis, general / Tech 2 menu structure

Introduction

Regardless of the control module selected in the Tech 2 menu, the Tech 2 will first contact the DICE to check that all control modules connected to a bus are communicating correctly. A warning is given by the Tech 2 in the event of a fault. The Tech 2 can detect the following faults:

1.	No communication with the DICE.

2.	No communication with one or more control modules connected to a bus.

3.	No communication with any of the systems not connected to the bus.

1 No communication with the DICE.

If the Tech 2 cannot contact the DICE, it will not be able to check that the control modules connected to a bus are communicating correctly either. The fault is probably because the DICE is not supplied with current or the diagnostics cable is not connected to the DICE (pin 7 of the data link connector and pin 28 of the DICE). The following menu will appear on the Tech 2:

DICE (Dashboard ICE) ----------------------------------- NO BUS SYSTEM CAN BE CONTACTED CAUSE No communication with DICE DIAGNOSTIC PROCEDURE Check the selected car model Turn the ignition switch to ON Press <ENTER> to try again If the trouble persists: See fault diagnosis fault symptom ‘No bus system can be contacted’ in Service Manual 3:5 ‘Bus and Diagnostics communication’.

If <ENTER> is selected, Tech 2 will again attempt to make contact with DICE. If <EXIT> is selected, Tech 2 will attempt to make contact with the selected control module (as Airbag and ABS must be able to be contacted even when DICE is not present).

2 No communication with one or more control modules connected to a bus

If the Tech 2 is in communication with the DICE but one or more control modules connected to a bus are missing, the following menu will appear on the Tech 2:

	Checking Bus ----------------------------------- ONE OR MORE BUS SYSTEMS CANNOT BE CONTACTED CAUSE One or more control modules are not communicating on the bus DIAGNOSTIC PROCEDURE Press <OK> to view missing control module See fault diagnosis fault symptom ‘One or more bus systems cannot be contacted’ in Service Manual 3:5 ‘Bus and Diagnostics communication’. -----------------------------------
		OK

If <OK> is pressed, a list of the control modules fitted as original equipment on the car will be displayed. “OK” is shown on the right of each control module if it is communicating correctly and “Missing” if the control module is missing from the bus.

Bus Configuration
Instrument Bus Systems
TWICE (Theft Warning ICE)	OK
SID (Saab Information Display)	OK
MIU (Main Instrument Unit)	Missing
Audio system	OK
ACC (Automatic Climate Control)	OK
CD Changer	OK
	More

Regardless of whether <ENTER> or <EXIT> is pressed, the Tech 2 will try to communicate with the selected control module. If the Tech 2 cannot contact the selected control module, the following menu will appear:

MIU (Main Instrument Unit) ----------------------------------- NO COMMUNICATION WITH THE SYSTEM Check the selected car model Press <ENTER> to try again Press <EXIT> to end. Should the trouble persist: See fault diagnosis fault symptom ‘No communication with the system’ in Service Manual 3:5 ‘Bus and Diagnostics communication’.

3 No communication with any of the systems not connected to the bus.

The fault then probably is caused by the control module not being supplied with power or that the diagnostic cable is not connected to the control module. If Tech 2 cannot make contact with the system, the following menu will be displayed:

Airbag ----------------------------------- NO COMMUNICATION WITH THE SYSTEM Check the selected car model Press <ENTER> to try again Press <EXIT> to end. Should the trouble persist: See fault diagnosis fault symptom ‘No communication with the system’ in Service Manual 3:5 ‘Bus and Diagnostics communication’.

Changing car configuration

If a new control module connected to a bus is installed in the car, the list will be appended automatically.

If a control module connected to a bus, such as the CD changer, is removed from the car, the list can be reset to zero with a command under “All systems/Read/Clear Configuration” or “DICE/Read/Clear Configuration”.

	Bus Configuration
	Instrument Bus Systems
	TWICE (Theft Warning ICE)	OK
	SID (SAAB Information Display)	OK
	MIU (Main Instrument Unit)	OK
	Audio system	OK
	ACC (Automatic Climate Control)	OK
	CD Changer	Missing
Reset		More

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