2003 Saab 9-3 Linear, AutomaticFACTORY OEM SERVICE PROCEDURE

Test readings, BCM: Remember

  • Note the test conditions and use common sense when assessing the test results.
  • First check that the control module has a power supply and is grounded.
  • Then check all sensor inputs and signals from other systems.
  • Finally, check the control module outputs. Remember that the test reading does not indicate whether the actuator works.
  • If any reading is not OK, consult the wiring diagram to trace which leads, connectors or components should be checked more thoroughly.
  • The specified values refer to a calibrated Fluke 88/97.
  • Test readings % (+) and ms (+) show the signal's pulse ratio and pulse length, respectively. A test instrument that can measure pulse ratio and pulse width must be used. The sign indicates the positive trigger pulse, TRIG+.
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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.

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