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Home >> Saab >> 2003 >> 9-3 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 25 (Bus And Diagnostics Communication) >> Fault diagnosis, General >> Tech 2 menu structure >> 2 No communication with one or more control modules connected to a bus

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

WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.

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 '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 CHART

  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 'Bus and Diagnostics communication'.