Use Diagnostic Trouble Codes (DTCs) (from the DTC checks) in the table below to determine the trouble area and proper inspection procedure. The Supplemental Restraint System (SRS) diagnostic trouble code chart is shown below as an example.

Symptom simulation
Problem symptoms tableUnlocking and locking the doors from the outside
Entry function (vehicles with a smart key system)
Carry the electronic key to enable this function.
Front doors
Grip the driver's door handle
to unlock the door. Grip the
passenger's door handle to
unlock all the doors.*
Make sure to touch the sensor
on the back of the handle.
...