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.
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HOMESERVICE MANUALSSAAB20039-3 CONVERTIBLE (9400) L4-2.0L TURBO (2.0 HOT)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSDESCRIPTION AND OPERATIONMAIN COMPONENTSAN OVERVIEW
2003 Saab 9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT)
An Overview
2003 Saab 9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT)SECTION An Overview
Main Components
1. Control module (589)
2. Crankshaft position sensor (345)
3. Mass air flow sensor (205)
4. Manifold absolute pressure sensor (431)
5. Charge air absolute pressure sensor (603)
Intake air temperature sensor (407)
6. Coolant temperature sensor (202)
7. Throttle body (604)
8. Limp-home solenoid (607)
9. Charge air control valve (179a)
10. Control valve, bypass (605)
11. Switch, cruise control (141)
12. Oxygen sensor 1 (592Fa)
13. Oxygen sensor 2 (592Ra)
14. EVAP canister purge valve (321)
15. Shut-off valve, EVAP canister (588)
16. Tank differential pressure sensor (585)
17. Injectors (206)
18. Ignition discharge module (346)
19. Clutch pedal switch (133)
Brake pedal switch (134)
Brake light switch (29)
20. Main relay (229)
Fuel pump relay (102)
Relay, limp-home solenoid (640)
A/C relay (156)
(A/C relay is mounted in engine bay relay board.)
RENDER: 1.0x
NO RELATED
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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.