Parking and Back-up Sensor OFF Switch Test/Replacement
Remove the instrument panel.
Disconnect the 5P connector (A) from parking and back-up sensor OFF switch (B).
Check for continuity between the parking and back-up sensor switch 5P connector terminals No. 1 and No. 2.
There should be continuity when switch is pushed.
There should be no continuity when switch is pushed again.
If the continuity is not specified, replace the switch.
Install the switch in the reverse order of removal.