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Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify the KR73 Ignition Main Relay (underhood) or KR73 Ignition Main Relay (rear body) click ON and OFF when commanding the Run/Crank relay On and Off with a scan tool.
    • If the KR73 Ignition Main Relay (underhood) or KR73 Ignition Main Relay (rear body) do not click ON and OFF 

      Refer to Circuit/System Testing below.

    • Go to next step: If the KR73 Ignition Main Relay (underhood) or KR73 Ignition Main Relay (rear body) click ON and OFF 
  3. All OK.
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