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 246 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPASSENGER PRESENCE SYSTEM INDICATOR CIRCUIT MALFUNCTIONCIRCUIT/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.
- The IPC module
- The PPS module
- The SDM module
- The IPC module wiring harness connector
- The PPS module wiring harness connector
- The SDM wiring harness connector
- Using the scan tool, go to Body and Accessories, then go onward to Special Functions to Instrument Panel Cluster (IPC), and then go to Display Test. In the Display Test mode you can turn ON or OFF all the instrument panel indicators when commanded ON. Commanded the IPC indicators ON. The PPS indicators should turn ON.
- If the passenger AIR BAG ON/OFF indicator does not turn ON, remove the connector from the PPS indicator display.
- On the PPS connector, test and repair the passenger AIR BAG ON/OFF indicator voltage circuit for a short to ground, a high resistance, or an open. If any of these conditions are found, make the appropriate repair.
- Connect a test lamp between the ignition 1 voltage circuit and passenger AIR BAG OFF indicator control circuit on the passenger AIR BAG ON/OFF indicator connector. With the passenger seat empty, use a scan tool to command the display test. Verify the test lamp illuminates.
- If test lamp illuminates, replace the passenger AIR BAG ON/OFF indicator.
- Remove the IPC connector. Test and repair both ON and OFF indicator control circuits between the PPS indicator and the IPC for a short to voltage, high resistance, or an open. If any of these conditions are found, make the appropriate repair.
Refer to Control Module References for IPC replacement in Repair Instructions for connector location.
- If passenger AIR BAG ON/OFF indicator voltage, ON, and OFF circuits test good, replace the IPC.
Note: The IPC must be serviced/replaced as a complete unit.
- If the passenger AIR BAG ON/OFF indicator does not turn ON, remove the connector from the PPS indicator display.
- PPS indicators turns ON when command ON then replace the PPS.
IMPORTANT:
When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
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.