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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0022, B0024, B0026, B0042, B0043, or B0044 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. 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 steering wheel module coil
    • The steering wheel module
    • The SDM module
    • The steering wheel coil module wiring harness connector
    • The steering wheel module wiring harness connector
    • The SDM wiring harness connector
  1. Ignition OFF, disconnect the steering wheel module. Then use J 38715-120 to connect the J 38715-A  to the upper steering wheel coil module in-line wiring harness connectors. See Special Tools . Use the PASSENGER INFLATOR and STEERING COLUMN connectors located on the load tool.
  2. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0022, B0024, B0026, B0042, B0043 or B0044 are set current.
    • If DTC B0022, B0024, B0026, B0042, B0043 or B0044 is history replace the steering wheel module.
  3. Ignition OFF, disconnect steering wheel module coil in-line connector.
  4. Use J 38715-80 to connect the J 38715-A  to the harness side of the steering wheel module coil in-line wiring harness connector. See Special Tools . Use the PASSENGER INFLATOR and BASE of COLUMN connectors located on the load tool.
  5. Ignition ON, use a scan tool to observe the SIR DTC display. Verify DTC B0022, B0024, B0026, B0042, B0043 or B0044 are set current.
    • If DTC B0022, B0024, B0026, B0042, B0043 or B0044 is history replace the steering wheel module coil.
  6. Ignition OFF, disconnect and remove the J 38715-A  and adapter. See Special Tools .
  7. Disconnect the SDM harness connector.
  8. Test the high and low circuits between the SDM and steering wheel module coil for a short to voltage, short to ground, an open, or low resistance. Verify that a short to voltage, short to ground, or open/low resistance does not exist.
    • If any of the above conditions are found make the appropriate repair.
  9. If all circuits test normal then replace the SDM.
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