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Home >> Chevrolet >> 2005 >> Cobalt SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 249 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0081 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: When removing connectors inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector.
    • The PPS module
    • The SDM module
    • The PPS wiring harness connector
    • The SDM wiring harness connector
  1. Ignition ON, the PPS should turn ON the PPS ON/OFF indicators. Verify the PPS illuminates the PPS ON/OFF indicators.
  2. Ignition ON, use the scan tool. Go to the passenger presence system (PPS) menu, then retrieve the DTCs. Refer to Passenger Presence System Flash Code Procedures . Verify no PPS DTCs are set.
  3. Check to see if the PPS was replaced. Verify that the correct PPS was installed into the vehicle.
    • If the wrong PPS was installed then replace the correct PPS.
  4. Ignition OFF, disconnect the PPS module connector. Refer to PPS replacement in Repair Instructions for connector location.
  5. Remove the SDM connector. Refer to SDM replacement in Repair Instructions for connector location.
  6. Test the occupant sensor serial data circuit for an open or high resistance between the PPS and SDM connector. Verify no open or high resistance exists.
    • If any of the above conditions are found make the appropriate repair.
  7. Test the PPS ignition 1 voltage circuit for a short to ground, a high resistance, or an open. Verify no short to ground, a high resistance, or an open exists.
    • If any of the above conditions are found make the appropriate repair.
  8. Replace the PPS.
  9. Ignition ON, use the scan tool to clear the DTCs then recheck for DTC B0081. Verify that the DTC does not reset.
    • If DTC B0081 resets, then replace the SDM.
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