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.

2004 Saab 9-3 Linear, AutomaticFACTORY OEM SERVICE PROCEDURE

Power steering system unit (745): Connection

PIN SIGNAL TYPE DESCRIPTION

Pin	Signal type	Description
2 (K2)	Power ground	Power supply
1(K2)	+30	Power supply
1(K5)	+15	Power supply
2(K5)	P-bus	Signal to/from other control modules
3 (K5)	P-bus	Signal to/from other control modules

Fig 1: Identifying EHPS Control Module Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

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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.