Check the play of the release bearing by spinning it by hand. If there is excessive play or noise, replace the release bearing.

NOTE: The release bearing is packed with grease. Do not wash it in solvent.
Malfunction Indicator Lamp
If this indicator comes on while driving, it means one of the engine’s emissions
control systems may have a problem. Even though you may feel no difference in your
vehicle’s performance, it ...
Countershaft Inspection (M/T)
Inspect the gear and bearing contact areas for wear and damage, then
measure the countershaft at points A, B, and C. If any part of the
countershaft is less than the service limit, replace ...
HandsFreeLink System Description
HandsFreeLink Control Unit Connector for Inputs and Outputs
...