Circuit/System Verification

WARNING: This page is about a different car, the 2015 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON.
Verify that DTC B3119 or B3120 is not set.
- If either of the DTCs are set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- If none of the DTCs are set
Verify that the vehicle key is correct for the vehicle. This can be accomplished by comparing the part number printed on the key to the appropriate part number in the parts catalog.
- If the vehicle key is incorrect
  Replace the vehicle key.
- If the vehicle key is correct
Verify the scan tool Exterior Driver Door Handle Switch and Exterior Passenger Door Handle Switch parameters change between Active and Inactive while operating their respective exterior door handle button.
- If any of the parameters does not change
  Refer to Exterior Door Handle Switch Malfunction .
- If all of the parameters change
Lock the vehicle using the keyless entry transmitter.
Verify that each door unlocks and opens by approaching the vehicle with a valid transmitter and operating their respective exterior door handle button.
- If both doors do not unlock/unlatch and open
  Refer to Passive Transmitter Malfunction in Circuit/System Testing.
- If only one door does not unlock/unlatch and open
  Refer to Antenna Circuit Malfunction in Circuit/System Testing.
- If both doors unlock/unlatches and opens
All OK.