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 MANUALSSAAB20029-3 SE, 2D CONVERTIBLE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMTRIONIC T7 FUEL CONTROL SYSTEMTECHNICAL DESCRIPTIONCONTROL MODULE BUS INPUTS
2002 Saab 9-3 SE, 2D Convertible, Automatic
Control Module Bus Inputs
2002 Saab 9-3 SE, 2D Convertible, AutomaticSECTION Control Module Bus Inputs
- Maximum permissible torque, bus from TCM (502)
- Sport position selected, bus from TCM (502)
- Selector lever position, automatic transmission, bus from TCM (502)
- Vehicle speed, rear left wheel, bus from MIU (540)
- Reverse gear selected, manual gearbox, bus from DICE (628)
- A/C request, bus from DICE (628)
- A/C pressure, high-pressure side, bus from DICE (628)
- Current consumption, bus from DICE (628)
- Fuel level, bus from MIU (540)
- CHECK ENGINE Request, bus from TCM (502)
- Immobilizer, bus from TWICE (632)
- Ignition +50, bus from DICE (628)
- Diagnostics, bus from DICE (628)/ diagnostic tool
- Vehicle speed, front right wheel, bus from TC/ABS (TC/ABS only)
- Vehicle speed, output speed, bus from TCM (automatic transmission only)
More detailed information on control module bus inputs can be found in the section BUS COMMUNICATION .
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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.