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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 251 (Object Detection System - Park Assist System) >> Diagnostic Information and Procedures >> DTC B0958, B0959, B0960, or B0961 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Scan Tool must be disconnected for steps 1 and 2 to allow module to power down.
  1. Ignition OFF for 1 min, disconnect the harness connector at the appropriate rear object sensor.
  2. Test for less than 5 Ω between the low reference circuit terminal 2 and ground.
    • If greater than the specified value, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K41 Parking Assist Control Module.
  3. Ignition ON, activate the parking assist, test for 7.5-9.0 V between the 8 V reference circuit terminal 1 and ground.
    • If less than the specified range, test the 8 V reference circuit for an open/high resistance. If the circuit tests normal, replace the K41 Parking Assist Control Module.
  4. Activate the parking assist, test for 7.5-9.0 V between the signal circuit terminal 3 and ground.
    • If less than the specified range, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the K41 Parking Assist Control Module.
  5. Replace the appropriate rear object sensor.
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