Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSAAB20009-3 CONVERTIBLE (9400) L4-2.0L TURBO (B205)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSINFORMATION BUS
2000 Saab 9-3 Convertible (9400) L4-2.0L Turbo (B205)
Information Bus
2000 Saab 9-3 Convertible (9400) L4-2.0L Turbo (B205)SECTION Information Bus
- Application and ID
Description and Operation
Testing and Inspection- Diagnostic Tool Screen Does Not Go on With ON Button Pressed
- No Communication With Auxiliary Heater
- No Communication With Motronic
- No Communication With TCM
- No Communication With the ABS
- No Communication With the Airbag (SRS)
- No Communication With the Trionic T5
- Quick Check
- Checking That the Trionic Control Module Is Active
- Checking Trionic Control Module Power Supply and Ground - I
- Checking Trionic Control Module Power Supply and Ground - II
- Checking the Diagnostic Tool
- Rectifying the Lead - I
- Rectifying the Lead - II
- Rectifying the Lead - III
- Check the Immobilizer Switch on the Main Instrument Unit
- Internal Control Module Fault
- Final Check
- Before Changing A Control Module
- No Contact With Any Bus System
- Quick Check
- Check DICE Control Module's Current Supply (+15 Circuit)
- Check DICE Control Module's Current Supply (+30 Circuit)
- Check That the DICE Control Module Is Awake
- Check That the DICE Control Module's Grounding
- Checking the Diagnostic Tool - I
- Checking the Diagnostic Tool - II
- Checking the DICE Control Module's Current Supply (+15 Circuit)
- Checking the DICE Control Module's Current Supply (+30 Circuit)
- Checking the DICE Control Module's Grounding
- Rectifying the Lead - I
- Rectifying the Lead - II
- Final Check
- Before Changing A Control Module
- The Diagnostic Tool Display "Missing" For One or More Systems
- Check DICE Can Communicate With A Bus-Connected Control Module
- Checking the I-Bus
- Diagnostic Procedure For the DICE Bus Wiring Harness - I
- Diagnostic Procedure For the DICE Bus Wiring Harness - II
- Diagnostic Procedure For the Bus Wiring Harness
- Checking Control Modules Allow Diagnostics Communication
- Diagnostic Procedure For the Control Module's Current Supply
- Final Check
- Before Changing A Control Module
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.