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Home >> Chevrolet >> 2004 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 918 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0023 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Refer to SIR Service Precautions .
When removing the connectors, inspect for terminal damage or corrosion. Inspect the connector body for damage to the locators that disengage the shorting bars when connected. Damage or corrosion to the following components requires repair or replacement of the affected component/connector:
  • Inflatable restraint module
  • SDM module
  • Front end sensor wiring harness connector
  • SDM wiring harness connector
IMPORTANT: The connector and connector position assurance (CPA) may seat independent of each other. Both the connector and CPA should seat with an audible and/or tactile click. Correct connection isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.
  1. Verify that the inflatable restraint right roof rail module connector and CPA are engaged.
    • If the above condition is not found, make the appropriate repair.
  2. Ignition OFF, disconnect the harness connector at the right roof rail module.
  3. With the appropriate load tool adapter, connect J 38715-A  or SA9409Z-A  in place of the right roof rail module. See Special Tools .
  4. Ignition ON, with a scan tool, verify that DTC B0023 is set as current.
    • If the DTC is not set or is set as history, cycle the ignition OFF, disconnect the load tool and adapter, reconnect the harness connector at the right roof rail module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the right roof rail module.
  5. Ignition OFF, disconnect the load tool and the adapter.
  6. Disconnect the harness connector at the SDM.
  7. Ignition ON, test for less than 1.0 volt between the appropriate control circuit listed below and ground:
    • Control circuit terminal 10
    • Control circuit terminal 11
    • If not within the specified range, test the control circuit for a short to voltage.
  8. Ignition OFF, test for infinite resistance between the appropriate control circuit listed below and ground:
    • Control circuit terminal 10
    • Control circuit terminal 11
    • If not within the specified value, test the control circuit for a short to ground.
  9. Test for less than 1 ohm between the appropriate control circuit terminal and SDM terminal listed below:
    • Control circuit terminal A and SDM terminal 11
    • Control circuit terminal B and SDM terminal 10
    • If not within the specified range, test the control circuit for an open/high resistance.
  10. If all circuits test normal, replace the SDM.
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