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Circuit/System Testing

WARNING: This page is about a different car, the 2012 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:

  • Driver seat belt retractor pretensioner
  • SDM module
  • Driver seat belt retractor pretensioner 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 driver seat belt retractor pretensioner 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 driver seat belt retractor pretensioner.
  3. With the appropriate load tool adapter, connect J 38715-A  Driver and Passenger SIR Load Tool or SA9409Z-A  SIR Load Tool (Driver/Passenger/Curtain) in place of the driver seat belt retractor pretensioner.
  4. Ignition ON, with a scan tool, verify that DTC B0015 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 driver seat belt retractor pretensioner, and cycle the ignition ON. If the DTC resets after reconnecting the pretensioner, replace the driver seat belt retractor pretensioner.
  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 56
    • Control circuit terminal 57
    • 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 56
    • Control circuit terminal 57
    • 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:
    • Driver seat belt retractor pretensioner control circuit terminal 1 and SDM terminal 57
    • Driver seat belt retractor pretensioner control circuit terminal 2 and SDM terminal 56
    • 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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