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, 2D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTHEADLIGHTSLIGHTINGDIAGNOSTIC INFORMATION AND PROCEDURESDTC B2545 OR B3880CIRCUIT/SYSTEM TESTING
2009 Saturn Astra XR, 2D Hatchback, Automatic
Circuit/System Testing
2009 Saturn Astra XR, 2D Hatchback, AutomaticSECTION Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the inoperative backup lamp.
- Ignition OFF, exterior lamps OFF, test for less than 5 ohms between the appropriate ground circuit terminal listed below and ground.
- Left tail lamp ground terminal 1 - 3 Door
- Left tail lamp ground terminal 6 - 5 Door
- Right tail lamp ground terminal 6 - 3 Door
- Right tail lamp ground terminal 1 - 5 Door
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Connect a test lamp between the appropriate control circuit terminal listed below and ground.
- Left backup lamp control terminal 2 - 3 Door
- Left backup lamp control terminal 1 - 5 Door
- Right backup lamp control terminal 5 - 3 Door
- Right backup lamp control terminal 6 - 5 Door
- Command the Reverse Light Test ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
- If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the REC.
- If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the REC.
- If all circuits test normal, replace the inoperative tail lamp circuit board.
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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.