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HOMESERVICE MANUALSSAAB20029-3 SE, 2D CONVERTIBLE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMTRIONIC T7 FUEL CONTROL SYSTEMTECHNICAL DESCRIPTIONTHROTTLE CONTROLMISCELLANEOUS
2002 Saab 9-3 SE, 2D Convertible, Automatic

Throttle Control: Miscellaneous

2002 Saab 9-3 SE, 2D Convertible, AutomaticSECTION Miscellaneous
  • The system regulates the current air mass/combustion so that it corresponds with the requested value. It is completely normal for the throttle not to be fully open despite the accelerator pedal being fully depressed.
  • Apart from internal faults in the control module, other faults in the throttle control system can always be pinpointed to the throttle body or its wiring. The main relay must also supply control module pin 1.

    If there is a fault in the supply from the main relay to control module pin 1, main relay trouble code P1640  will be generated, the throttle will close and the engine will stop.

  • The feel of the accelerator pedal is not affected in limp-home mode.
  • The system is self-calibrating.
    NOTE: A short circuit in the 5V supply will put the system in limp-home mode and may be due to a fault in the wiring harness or in a sensor supplied with 5V.
RENDER: 1.0x

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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.