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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 294 (SUNROOF SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER SUNROOF INOPERATIVECIRCUIT/SYSTEM TESTING
2006 Buick Terraza CXL, 3.5 L, AWD
Circuit/System Testing
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2007 Chevrolet Monte Carlo and 2007 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the motor/actuator assembly.
- Test for less than 1.0 ohm of resistance between the sunroof motor/actuator ground circuit terminal 1 and ground.
- If greater than 1.0 ohm, repair the ground circuit for an open/high resistance.
- Ignition ON, verify that a test lamp illuminates between the battery positive voltage circuit and ground.
- If the test lamp does not illuminate, repair the battery positive voltage circuit for a short to ground or an open/high resistance.
- Verify that a test lamp illuminates between the accessory voltage circuit and ground.
- If the test lamp does not illuminate, repair the accessory voltage circuit for a short to ground or an open/high resistance.
- Ignition OFF, connect the sunroof motor/actuator assembly harness connector.
- Disconnect the harness connector at the sunroof switch.
- Test for less than 5.0 ohms of resistance between the sunroof switch ground circuit terminal B and ground.
- If greater than 5.0 ohms, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the sunroof motor/actuator assembly.
- Ignition ON, test for B+ between the sunroof switch open signal circuit terminal D and ground.
- If less than B+, test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the motor/actuator assembly.
- Test for B+ between the sunroof switch close signal circuit and ground.
- If less than B+, test the signal circuit for a short to ground or an open/high resistance. If the circuit test normal, replace the motor/actuator assembly.
- If all circuit test normal, replace the sunroof motor/actuator assembly.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.