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Home >> Hummer >> 2010 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 10 (Supplemental Inflatable Restraint System) >> Diagnostic Information and Procedures >> DTC 023 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. 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 to the following requires repair or replacement of the affected component/connector:
  • Seat belt buckle - passenger
  • PPS module
  • Seat belt buckle - passenger wiring harness connector
  • PPS wiring harness connector
  1. Ignition OFF, disconnect the X2 harness connector at the inflatable restraint passenger seat belt tension sensor.
  2. Ignition ON, test for 4.5-5.5 volts between the voltage reference circuit terminal B X2 and ground.
    • If less that the specified range, test the voltage reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the PPS module.
    • If greater that the specified range, test the voltage reference circuit for a short to voltage. If the circuit tests normal, replace the PPS module.
    3. IMPORTANT: The AIRBAG fuse that supplies ignition voltage must be removed to ensure the PPS module is inactive. An active PPS module may cause inaccurate resistance readings.
  3. Ignition OFF, remove the AIRBAG fuse. Test for less than 3 ohms between the low reference circuit terminal A X2 and ground.
    • If greater than the specified range, test the low reference circuit for open/high resistance. If the circuit tests normal, replace the PPS module.
  4. Ignition OFF, disconnect the harness connector at the PPS module.
  5. Test for infinite resistance between the signal circuit terminal 4 and ground.
    • If less than the specified value, test the signal circuit for a short to ground.
  6. Ignition ON, test for less than 1 volt between the signal circuit terminal 4 and ground.
    • If greater than the specified range, test the signal circuit for a short to voltage.
  7. Test for less than 1 ohm between the signal terminal 4 and circuit terminal C X2 at the sensor harness connector.
    • If greater than the specified range, test the signal circuit for an open/high resistance.
  8. If all circuits test normal, replace the seat belt buckle.
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