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Home >> Chevrolet >> 2018 >> Sonic Premier, 4D Hatchback, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 186 (Keyless Entry System And Remote Functions) >> Diagnostic Information and Procedures >> Keyless Entry System Malfunction >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2018 GMC Canyon and 2018 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Operate the transmitter while observing the scan tool Key Fob Function parameter for the appropriate transmitter.
  2. Verify the scan tool Key Fob Function parameter corresponds with the function selected on the transmitter.
    • If the Key Fob Function parameter does not correspond with the transmitter selection 
      NOTE:

      Before replacing the transmitter, inspect the transmitter battery contacts for any corrosion or damage. If no corrosion or damage is found, replace the transmitter battery and retest before replacing the transmitter.

    1. Replace the transmitter.
    2. Operate the new transmitter while observing the scan tool Key Fob Function parameter for the transmitter.
    3. Verify the scan tool Key Fob Function parameter correspond with the function selected on the transmitter.
      • If the Key Fob Function parameter does not correspond with the transmitter selection 

        Perform Circuit/System Testing.

    • Go to next step: If the Key Fob Function parameter corresponds with the transmitter selection 
  3. All OK.
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