Factors such as maintenance,
temperatures, driving speeds,
vehicle loading, and road conditions
affect the wear rate of the tires.
Treadwear indicators are one way to
tell when it is time for new tires.
Treadwear indicators appear when
the tires have only 1.6mm (1/16 in)
or less of tread remainin
Ignition OFF, disconnect the X2 harness connector at the K9 Body Control
Module, ignition ON.
Verify a test lamp illuminates between the B+ circuit terminal 3 and
ground.
If the test lamp does not illuminate and the circuit fuse is good
Ignition OFF.
Test for less than 2 ohms in the B+