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Home >> Chevrolet >> 2017 >> Bolt EV Premier >> Repair and Diagnosis >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System And Pedestrian Protection System >> Diagnostic Information and Procedures >> DTC B0958, B0959, B0960, or B0961: Parking Assist Rear Sensor Circuit >> Circuit/System Testing

Circuit/System Testing

  1. Vehicle OFF for 1 min, scan tool must be disconnected for steps 1 and 2 to allow module to power down. Disconnect the harness connector at the affected rear object sensor.
  2. Test for less than 10 Ω between the low reference circuit terminal 2 and ground.
    • If 10 Ω or greater 
    1. Vehicle 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 10 Ω 
  3. Vehicle 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. Vehicle 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 - 12 V between the signal circuit terminal 3 and ground.
    • If less than 4 V 
    1. Vehicle OFF, disconnect the 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 V 
    1. Vehicle OFF, disconnect the harness connector at the K182 Parking Assist Control Module, Vehicle 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 - 12 V 
  6. Vehicle OFF, connect all of the B306 Parking Assist Sensors.
  7. Vehicle ON.
  8. Verify that DTC B0958, B0960, or B0961 is not set.
    • If the DTC is set 

      Replace the appropriate B306 Parking Assist Sensor

    • If the DTC is not set 
  9. All OK.
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