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 MANUALSSATURN2009ASTRA XR, 4D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)BODY & FRAMEIGNITION SWITCH/STEERING LOCKIMMOBILIZERDIAGNOSTIC INFORMATION AND PROCEDURESDTC B3925, B3929, OR B3977CIRCUIT/SYSTEM VERIFICATION
2009 Saturn Astra XR, 4D Hatchback, Automatic
Circuit/System Verification
2009 Saturn Astra XR, 4D Hatchback, AutomaticSECTION Circuit/System Verification
- Ignition ON, select Reset ECU on the scan tool for the appropriate control module.
- Perform the Programming and Setup procedure for the appropriate control module. Refer to Control Module References
for programming and setup procedures. Verify the DTC does not reset after programming.
- If the DTC resets, replace the appropriate control module.
IMPORTANT:
When reprogramming a control module which has already been programmed, additional security measures must be met before reprogramming is allowed. Prior to programming, security access must be granted by connecting a Tech 2 in a pass-thru arraignment and requesting security access in TIS. Once security access is granted, the security code must be entered. The security code can be found in DealerWorld. Both of these security measures must be met before the Reset ECU selection is allowed.
RENDER: 1.0x
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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.