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Circuit/System Testing

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • The seat belt tension retractor sensor is not serviced separately. The seat belt retractor pretensioner replacement - right front with the seat belt tension retractor sensor must be serviced as a complete unit.
  • When removing connectors, inspect for damage or corrosion. Damage or corrosion in the following requires repair or replacement of the affected component/connector:
    • The seat belt retractor pretensioner - RF
    • The PPS module
    • The seat belt retractor pretensioner - RF wiring harness connector
    • The PPS wiring harness connector
  1. Ignition OFF, disconnect the seat belt tension retractor sensor. Refer to Seat Belt Retractor Replacement - Right Front  for location of connector.
  2. Disconnect the PPS module connector.
  3. Test the seat belt tension retractor sensor signal circuit for a short to ground, a high resistance, or an open. Verify that a short to ground, a high resistance, or an open does not exist.
    • If any of the above conditions are found, make the appropriate repair.
  4. Test the seat belt tension retractor sensor 5-volt reference circuit for a short to ground, a short to voltage, a high resistance, or an open. Verify that a short to ground, a short to voltage, a high resistance, or an open does not exist.
    • If any of the above conditions are found, make the appropriate repair.
  5. Test the seat belt tension retractor sensor low reference circuit for a short to ground, a short to voltage, a high resistance, or an open. Verify that a short to ground, a short to voltage, a high resistance, or an open does not exist.
    • If any of the above conditions are found, make the appropriate repair
  6. Ignition ON, engine OFF test the seat belt tension retractor sensor circuit with a DMM. Measure the voltage of the seat belt tension retractor sensor circuit harness side and ground. The voltage should read 0.05-4.5 volts.
    • If the voltage is more than 5 volts, test the seat belt tension retractor sensor circuit for a short to voltage. If the circuit tests good, replace the PPS.
  7. Reconnect all PPS components. Use the scan tool to clear all PPS DTCs. Rezero the PPS. Refer to Passenger Presence System Rezeroing . Verify DTC B0071 does not exist.
    • If DTC B0071 reset, replace the PPS.
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