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 MANUALSBUICK2006TERRAZA CXL, 3.5 L, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 52 (HVAC SYSTEM - AUTOMATIC)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL OUTPUT CONTROLS
2006 Buick Terraza CXL, 3.5 L, AWD
Scan Tool Output Controls
2006 Buick Terraza CXL, 3.5 L, AWDSECTION Scan Tool Output Controls
WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
HVAC Control Module Scan Tool Output Controls
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| A/C Request | Engine Output Controls | - |
| Air Inlet Door Position | Engine Output Controls | - |
| Blower Motor Speed | Engine Output Controls | - |
| Driver Temp. Door | Engine Output Controls | - |
| Mode Door Position | Engine Output Controls | - |
| Passenger Temp. Door | Engine Output Controls | - |
| Recalibrate all Motors | Engine Output Controls | - |
PCM Scan Tool Output Controls
| Scan Tool Output Control | Additional Menu Selection(s) | Description |
|---|---|---|
| A/C Relay | Engine Output Controls | The scan tool displays Commanded State: None, Off, or On. This function allows you to command the A/C compressor clutch relay ON and OFF. The state of the A/C compressor clutch should correspond to the state of the A/C compressor clutch relay. |
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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.