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.

2003 Saab 9-3 Linear, AutomaticFACTORY OEM SERVICE PROCEDURE

Control module, Trionic T8 (589)

Fig 1: Identifying Control Module, Trionic T8 (589)

Courtesy of SAAB-SCANIA OF AMERICA, INC.

COMPONENT FUNCTION

No. of pins		A=64 B=64
Power supply, (+30 circuit)	Pin no.	3(A), 20(A)0
Power supply (+15 circuit)	Pin no.	2(A), 19(A)
Power supply from main relay	Pin no.	48(A), 64(A)
Power ground	Pin no.	47(A), 57(A), 60(A) and 63(A)
P-bus +	Pin no.	5(A)
P-bus -	Pin no.	6(A)

Factory Service Tools

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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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