Drive Belt Auto-tensioner Inspection
Special Tools Required

Belt tension release tool
 Snap-on YA9317

or equivalent, commercially available
  1. With A/C: Turn the ignition switch to ON (II), and make sure to turn the A/C switch off. Turn the ignition switch to LOCK (0).
  1. Check the position of the auto-tensioner indicator's pointer (A). Start the engine then check the position again with the engine idling. If the position of the indicator moves or fluctuates very much, replace the auto-tensioner.
  1. Check for abnormal noise from the tensioner pulley. If you hear abnormal noise, replace the tensioner pulley.
  1. Remove the drive belt.