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Home >> Buick >> 2013 >> Verano Premium, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 273 (Keyless Entry System And Remote Functions) >> Diagnostic Information and Procedures >> Keyless Entry System Malfunction (Passive) >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2012 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that DTC B3119, B3120, or B3121 is not set.
    • If none of the DTCs are set 
  3. Verify that the transmitter is a correct transmitter for the vehicle. This can be accomplished by comparing the part number printed on the transmitter to the appropriate part number in the parts catalog.
    • If the transmitter is incorrect 

      Replace the transmitter.

    • If the transmitter is correct 
  4. Verify the scan tool Exterior Driver Door Handle Switch, Exterior Passenger Door Handle Switch, and Trunk Lid Exterior Unlatch Switch parameters change between Active and Inactive while operating their respective release handle/touch pad.
    • If all of the parameters change 
  5. Lock the vehicle using the keyless entry transmitter.
  6. Verify that each door and rear compartment unlocks and opens by approaching the vehicle with a valid transmitter and operating their respective release handle/touch pad.
    • If both doors and the rear compartment do not unlock/unlatch and open 

      Refer to Passive Transmitter Malfunction in Circuit/System Testing .

    • If only one door or the rear compartment does not unlock/unlatch and open 

      Refer to Antenna Circuit Malfunction in Circuit/System Testing .

    • If both doors and the rear compartment unlocks/unlatches and opens 
  7. All OK.
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