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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1289 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0014 - B0045 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT: When removing the connectors inspect for damage or corrosion. Damage or corrosion to the following requires repair or replacement of the affected component/connector:
    • Pretensioner
    • Air bag module
    • SDM module
    • Air bag wiring harness connector
    • SDM wiring harness connector

    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. The CPA isolates the shorting-bars within the connector allowing the deployment circuit to operate properly.
  1. Verify that the appropriate inflator restraint 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 appropriate inflatable restraint module.
  3. With the appropriate load tool adaptor, connect special tool J 38715-A  in place of the inflator restraint module.
  4. Ignition ON, with a scan tool, verify the appropriate DTC is set as current.
    • If the DTC is not set or is set as history, cycle ignition OFF, disconnect the adapter and J 38715-A  , reconnect the harness connector at the inflator restraint module, and cycle the ignition ON. If the DTC resets after reconnecting the module, replace the inflator restraint module.
  5. Ignition OFF, disconnect special tool J 38715-A  and the adaptor.
  6. Disconnect the harness connector at the SDM.
  7. Ignition OFF, disconnect the harness connector at the appropriate air bag module. Refer to the appropriate air bag module replacement procedure.
  8. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A1 (with 10 series)
    • I/P Module - Stage 1 terminal A (without 10 series)
    • I/P Module - Stage 2 terminal B1
    • Left Front Roof Rail Module terminal B (regular cab)
    • Left Front Roof Rail Module terminal 1 (extended cab)
    • Right Front Roof Rail Module terminal B (regular cab)
    • Right Front Roof Rail Module terminal 1 (extended cab)
    • Seat Belt Pretensioner - Left terminal B
    • Seat Belt Pretensioner - Right terminal B
    • If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the SDM.
  9. Test for less than 1 volt between the appropriate low control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A2 (with 10 series)
    • I/P Module - Stage 1 terminal B (without 10 series)
    • I/P Module - Stage 2 terminal B2
    • Left Front Roof Rail Module terminal A (regular cab)
    • Left Front Roof Rail Module terminal 2 (extended cab)
    • Right Front Roof Rail Module terminal A (regular cab)
    • Right Front Roof Rail Module terminal 2 (extended cab)
    • Seat Belt Pretensioner - Left terminal A
    • Seat Belt Pretensioner - Right terminal A
    • If greater than the specified range, test the circuit for a short to voltage. If the circuit tests normal, replace the SDM.
  10. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A1 (with 10 series)
    • I/P Module - Stage 1 terminal A (without 10 series)
    • I/P Module - Stage 2 terminal B1
    • Left Front Roof Rail Module terminal B (regular cab)
    • Left Front Roof Rail Module terminal 1 (extended cab)
    • Right Front Roof Rail Module terminal B (regular cab)
    • Right Front Roof Rail Module terminal 1 (extended cab)
    • Seat Belt Pretensioner - Left terminal B
    • Seat Belt Pretensioner - Right terminal B
    • If less than the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
  11. Test for infinite resistance between the appropriate low control circuit terminal listed below and ground:
    • I/P Module - Stage 1 terminal A2 (with 10 series)
    • I/P Module - Stage 1 terminal B (without 10 series)
    • I/P Module - Stage 2 terminal B2
    • Left Front Roof Rail Module terminal A (regular cab)
    • Left Front Roof Rail Module terminal 2 (extended cab)
    • Right Front Roof Rail Module terminal A (regular cab)
    • Right Front Roof Rail Module terminal 2 (extended cab)
    • Seat Belt Pretensioner - Left terminal A
    • Seat Belt Pretensioner - Right terminal A
    • If less than the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
  12. Test for less then 1 ohm between the appropriate high control circuit terminals listed below:
    • I/P Module - Stage 1 terminal A1 and SDM terminal 10 (with 10 series)
    • I/P Module - Stage 1 terminal A and SDM terminal 10 (without 10 series)
    • I/P Module - Stage 2 terminal B1 and SDM terminal 6
    • Left Front Roof Rail Module terminal B and SDM terminal 13 (regular cab)
    • Left Front Roof Rail Module terminal 1 and SDM terminal 13 (extended cab)
    • Right Front Roof Rail Module terminal B and SDM terminal 14 (regular cab)
    • Right Front Roof Rail Module terminal 1 and SDM terminal 14 (extended cab)
    • Seat Belt Pretensioner - Left terminal B and SDM terminal 16
    • Seat Belt Pretensioner - Right terminal B and SDM terminal 19
    • If greater than the specified range, test the circuit for an open/high resistance.
  13. Test for less then 1 ohm between the appropriate low control circuit terminals listed below:
    • I/P Module - Stage 1 terminal A2 and SDM terminal 11 (with 10 series)
    • I/P Module - Stage 1 terminal B and SDM terminal 11 (without 10 series)
    • I/P Module - Stage 2 terminal B2 and SDM terminal 7
    • Left Front Roof Rail Module terminal A and SDM terminal 12 (regular cab)
    • Left Front Roof Rail Module terminal 2 and SDM terminal 12 (extended cab)
    • Right Front Roof Rail Module terminal A and SDM terminal 15 (regular cab)
    • Right Front Roof Rail Module terminal 2 and SDM terminal 15 (extended cab)
    • Seat Belt Pretensioner - Left terminal A and SDM terminal 17
    • Seat Belt Pretensioner - Right terminal A and SDM terminal 18
    • If greater than the specified range, test the circuit for an open/high resistance.
  14. If all circuits test normal, replace the SDM.
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