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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 B0083-B0088 >> Circuit/System Testing

Circuit/System Testing

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    IMPORTANT: Refer to SIR Service Precautions .
    When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
    • Front end sensor
    • SDM module
    • Front end sensor wiring harness connector
    • SDM wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the appropriate sensor.
  2. Disconnect the harness connector at the SDM.
  3. Ignition ON, test for less than 1 volt between the following signal circuit and ground.
    • Right front end sensor terminal 1
    • Left front end sensor terminal 1
    • Right front side impact sensor terminal B
    • Left front side impact sensor terminal B
    • Right rear side impact sensor terminal B
    • Left rear side impact sensor terminal B
    • If greater than the specified range, test the circuit for a short to voltage.
  4. Ignition ON, test for less than 1 volt between the low reference circuit and ground.
    • Right front end sensor terminal 2
    • Left front end sensor terminal 2
    • Right front side impact sensor terminal A
    • Left front side impact sensor terminal A
    • Right rear side impact sensor terminal A
    • Left rear side impact sensor terminal A
    • If greater than the specified range, test the circuit for a short to voltage.
  5. Test for infinite resistance between the signal circuit and ground.
    • Right front end sensor terminal 1
    • Left front end sensor terminal 1
    • Right front side impact sensor terminal B
    • Left front side impact sensor terminal B
    • Right rear side impact sensor terminal B
    • Left rear side impact sensor terminal B
    • If less than the specified value, test the circuit for a short to ground.
  6. Test for less than 1 ohm between the following signal circuit terminals.
    • Right front end sensor terminal 1 and SDM terminal 37.
    • Left front end sensor terminal 1 and SDM terminal 36.
    • Right front side impact sensor terminal B and the SDM terminal 43.
    • Left front side impact sensor terminal B and the SDM terminal 42.
    • Right rear side impact sensor terminal B and the SDM terminal 45.
    • Left rear side impact sensor terminal B and the SDM terminal 44.
    • If greater than the specified range, test the circuit for an open/high resistance.
  7. Test for less then 1 ohm between the following front end sensor low reference circuit terminals.
    • Right front end sensor terminal 2 and SDM terminal 39.
    • Left front end sensor terminal 2 and SDM terminal 38.
    • Right front side impact sensor terminal A and the SDM terminal 41.
    • Left front side impact sensor terminal A and the SDM terminal 40.
    • Right rear side impact sensor terminal A and the SDM terminal 47.
    • Left rear side impact sensor terminal A and the SDM terminal 46.
    • If greater than the specified range, test the circuit for an open/high resistance.
  8. If all circuits test normal, replace the appropriate sensor.
  9. Reconnect all SIR components. Ignition ON, with a scan tool clear and check for DTCs.
    • If the DTC returns and is current, replace the SDM.
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