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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 977 (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 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. 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 pretensioner
    • The air bag module
    • The SDM module
    • The air bag wiring harness connector
    • The SDM wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the appropriate air bag module. Refer to the appropriate air bag module replacement procedure.
  2. Ignition ON, test for less than 1 volt between the appropriate high control circuit terminal 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.
  3. Test for less than 1 volt between the appropriate low control circuit terminal 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.
  4. Ignition OFF, test for infinite resistance between the appropriate high control circuit terminal 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 not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
  5. Test for infinite resistance between the appropriate low control circuit terminal 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 not the specified value, test the circuit for a short to ground. If the circuit tests normal, replace the SDM.
  6. With the appropriate adaptor, connect J 38715-A  in place of the air bag module.
  7. Ignition ON, verify the DTC is set as current.
    • If DTC is not set or is set as history, replace the appropriate air bag module.
  8. Ignition OFF, disconnect J 38715-A  and the appropriate adaptor.
  9. Disconnect the harness connector at the SDM.
  10. Test for less then 1 ohm between the following high control circuit terminals.
    • 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 not within the specified range, test the circuit for an open/high resistance.
  11. Test for less then 1 ohm between the following low control circuit terminals.
    • 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 not within the specified range, test the circuit for an open/high resistance.
  12. If all circuits test normal, replace the SDM.
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