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Home >> Buick >> 2013 >> Verano Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Drivers Assistance Systems - ADAS >> Object Detection System - Park Assist System >> Diagnostic Information and Procedures >> DTC B1405 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the X2 harness connector at the K41 Front and Rear Parking Assist Control Module, ignition ON.
  2. Test for less than 1 V between the 8 V reference circuit terminal 4 and ground.
    • If 1 V or greater 

      Repair the short to voltage on the circuit.

    • If less than 1 V 
  3. Ignition OFF.
  4. Test for infinite resistance between the 8 V reference circuit terminal 4 and ground.
    • If less than infinite resistance 

      Repair the short to ground on the circuit.

    • If infinite resistance 
  5. Replace the K41 Front and Rear Parking Assist Control Module.
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