LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 446 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC B0079 or B0080 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
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
  • Inflatable Restraint Sensing and Diagnostic Module
  • Seat position sensor wiring harness connector
  • Inflatable Restraint Sensing and Diagnostic Module wiring harness connector
  1. Ignition OFF, disconnect the harness connector at the appropriate seat position sensor.
  2. Test for less than 10 Ω between the low reference circuit terminal 1 and ground.
    • If 10 Ω or greater 
    1. Disconnect the X2 harness connector at the Inflatable Restraint Sensing and Diagnostic Module.
    2. Test for less than 2 Ω in the low reference circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the Inflatable Restraint Sensing and Diagnostic Module.
    • If less than 10 Ω 
  3. Ignition ON, test for 4-9 V between the signal circuit terminal 2 and ground.
    • If less than 4 V 
    1. Ignition OFF. Disconnect the X2 harness connector at the Inflatable Restraint Sensing and Diagnostic Module.
    2. Test for infinite resistance between the control circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
    3. Test for less than 2 Ω in each control circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the Inflatable Restraint Sensing and Diagnostic Module.
    • If greater than 9 V 
    1. Ignition OFF, disconnect the X2 harness connector at the Inflatable Restraint Sensing and Diagnostic Module. Ignition ON.
    2. Test for less than 1 V between the control circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the Inflatable Restraint Sensing and Diagnostic Module.
    • If within the specified range 
  4. Replace the Seat Position Sensor.
scientia non olet · About LEMON Manuals