Inspect the belt for cracks or damage. If the belt is cracked or damaged, replace it.
Check that the position of the auto-tensioner indicator (A) is within the standard range (B) as shown. If it is out of the standard range, replace the drive belt.

Drive Belt Auto-Tensioner Inspection
Turn the ignition switch to ON (II), and make sure to turn the A/C switch
OFF, then turn the ignition switch to LOCK (0).
Check the position of the auto-tensioner indicator (A). S ...
Installation
Install the damper rubber mount (A) onto the damper unit. Position the
damper assembly (B) between the body and the axle beam.
NOTE: Be careful not to damage the body.
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Rear Brake Hose Replacement
Raise and support the vehicle.
Remove the rear wheel.
Disconnect the brake hose (A) from the brake line (B) using a 10 mm flare-nut
wrench (C).
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