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.
Circuit/System Testing
2009 Saab 9-7X 5.3iSECTION Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the SAS.
- Test for less than 1.0 ohm of resistance between the low reference circuit terminal 2 and ground.
- If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
- Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.
- If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
- If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
- Test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and the signal circuit terminal 6.
- If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
- If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
- Ignition OFF, reconnect the SAS.
- Disconnect the EBCM harness connector.
- Test for infinite resistance between the signal circuit pin 4 and ground.
- If less than the specified range, test the signal circuit for a short to ground.
- Reconnect the EBCM harness connector.
- Turn the ignition ON. Turn the steering wheel through its full range and back to straight ahead to center the SAS. Using the scan tool, observe the steering wheel position. The parameter changes smoothly while turning the steering wheel through the entire range and correlate to zero reading with the wheels in a straight ahead position.
- If the steering wheel position parameter does not change, replace the SAS.
- If the steering wheel position parameter change, replace the EBCM.
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.