Circuit/System Testing

2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at each of the object sensors.
  2. Ignition ON, transmission in REVERSE, test for 7.5-9.0 volts between 8-volt reference circuit terminal 1 and ground.
    • If less than the specified range, test the 8-volt reference circuit for a short to ground. If the circuit tests normal, replace the object alarm module.
    • If greater than the specified range, test the 8-volt reference circuit for a short to voltage. If circuit tests normal, replace the object alarm module.
  3. Connect each rear object sensor one at a time while monitoring the scan tool Sensor Voltage Feed Output parameter. The parameter should be 7.2-9.2 volts.
    • If not within the specified range, test or replace the appropriate object alarm sensor.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.