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Home >> Cadillac >> 2017 >> ATS Base, 4D Sedan, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (Object Detection System And Pedestrian Protection System) >> Diagnostic Information and Procedures >> DTC B0958, B0959, B0960, or B0961: Parking Assist Rear Sensor >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, scan tool disconnected, disconnect the harness at the appropriate B306 Rear Object Sensor. It may take up to 2 min for all vehicle systems to power down.
  2. Test for less than 15 Ω between the low reference circuit terminal 2 and ground.
    • If 15 Ω or greater 
    1. Ignition OFF, disconnect the harness connector X2 at the K182 Parking Assist Control 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 K182 Parking Assist Control Module.
    • If less than 15 Ω 
  3. Ignition ON.
  4. Test for at least 9.7 V between the 12 V reference circuit terminal 1 and ground.
    • If less than 9.7 V 
    1. Ignition OFF, disconnect the harness connector at the K182 Parking Assist Control Module.
    2. Test for infinite resistance between the 12 V reference circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the 12 V 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 K182 Parking Assist Control Module.
    • If 9.7 V or greater 
  5. Test for 4.0 - 12.0 V between the signal circuit terminal 2 and ground.
    • If less than 4.0 V 
    1. Ignition OFF, disconnect the X3 harness connector at the K182 Parking Assist Control Module.
    2. Test for infinite resistance between the signal circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance
    3. Test for less than 2 Ω in the signal circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, replace the K182 Parking Assist Control Module.
    • If greater than 12.0 V 
    1. Ignition OFF, disconnect the X3 harness connector at the K182 Parking Assist Control Module, ignition ON.
    2. Test for less than 1 V between the signal circuit and ground.
      • If 1 V or greater, repair the short to voltage on the circuit.
      • If less than 1 V, replace the K182 Parking Assist Control Module.
    • If between 4.0 - 12.0 V 
  6. All OK.
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