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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1544 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0079 or B0080 >> Circuit/System Testing

Circuit/System Testing

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NOTE: When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
  • Seat position sensor
  • SDM module
  • Seat position sensor wiring harness connector
  • SDM wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the appropriate B88 seat position sensor.
  2. Test for less than 10 Ω between the low reference circuit terminal 1 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K36 SDM.
  3. Ignition ON, test for 4-9 V between the signal circuit terminal 2 and ground.
    • If less than the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K36 SDM.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the K36 SDM.
  4. If all circuits test normal, replace the B88 seat position sensor.
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