2001 Saab 9-3 Base, 2D Hatchback, AutomaticFACTORY OEM SERVICE PROCEDURE

Control module power supply: Notes

Fig 1: Identifying Control Module Power Supply
G03504118Courtesy of SAAB-SCANIA OF AMERICA, INC.

+30

Fig 2: Identifying Control Module Power Supply Circuit Diagram
G03504119Courtesy of SAAB-SCANIA OF AMERICA, INC.

The main relay, fuel pump relay and fuse 17 are supplied with +30 from maxi fuse 2. Control module pin 23 is supplied from fuse 28.

The control module uses +30 for its memory.

+15

Control module pin 43 is supplied with +15 from fuse 17. When +15 is applied to pin 43, the control module will be activated.

Factory Service Tools

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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