PINPOINT TEST A : Accessory Drive Belt Noise or Flutter

NOTE: Under no circumstances should the accessory drive belt, tensioner or pulleys have any fluids or belt dressing applied to them as damage to the belt material and tensioner damping mechanism may occur.

A1 CHECK THE ACCESSORY DRIVE BELT

Check the condition of the accessory drive belt and for correct installation. Refer to Accessory Drive .

Is the accessory drive belt acceptable?

Yes	GO to A2.
No	INSTALL a new accessory drive belt. REFER to Accessory Drive Belt - 2.0L GTDI or REFER to Accessory Drive Belt - 3.5L Ti-VCT or REFER to Accessory Drive Belt - 3.5L GTDI .

A2 CHECK FOR FLUID CONTAMINATION ON THE ACCESSORY DRIVE BELT

Is the accessory drive belt clean and dry?

Yes

GO to A3.

For a drive belt that has been exposed to fluid contamination during vehicle operation, such as leaks from the power steering system, A/C system or cooling system, clean all pulleys with soap and water, rinse with clean water and install a new accessory drive belt. REFER to Accessory Drive Belt - 2.0L GTDI or REFER to Accessory Drive Belt - 3.5L Ti-VCT or REFER to Accessory Drive Belt - 3.5L GTDI . For a drive belt that has been exposed to fluids in a localized area during routine vehicle service, such as replacement of hoses or fluids, the drive belt and pulleys should be washed with soap and water immediately (prior to starting the engine), and rinsed with clean water.

A3 CHECK FOR DAMAGED ACCESSORY DRIVE BELT TENSIONER

Test the accessory drive belt tensioner. Refer to Accessory Drive .

Does the accessory drive belt tensioner function correctly?

Yes	GO to A4.
No	INSTALL a new accessory drive belt tensioner. REFER to Accessory Drive Belt Tensioner - 2.0L GTDI or REFER to Accessory Drive Belt Tensioner - 3.5L Ti-VCT or REFER to Accessory Drive Belt Tensioner - 3.5L GTDI .

A4 CHECK FOR PULLEY MISALIGNMENT OR EXCESSIVE PULLEY RUNOUT

Determine the area where the noise comes from.

Check each of the pulleys in that area with a straightedge to the crankshaft pulley.

Look for accessory pulleys out of position in the fore/aft direction or at an angle to the straightedge.

Is the pulley(s) misaligned or have excessive pulley runout?

Yes	INSPECT the pulley. REPLACE as necessary. For crankshaft pulley, REFER to ENGINE - 2.0L GTDI , ENGINE - 3.5L TI-VCT or ENGINE - 3.5L GTDI . For generator, REFER to Charging System . For A/C compressor, REFER to Climate Control - DATC or REFER to Climate Control - EMTC .
No	GO to A5.

A5 CHECK FOR DAMAGED ACCESSORIES

Remove the accessory drive belt.

Check that each accessory pulley can be rotated by hand in the unloaded condition.

Check that each accessory pulley does not feel loose or is binding.

Do each of the accessory pulleys rotate smoothly by hand?

Yes	GO to A6.
No	INSPECT the accessories. INSTALL a new accessory, if necessary. For generator, REFER to Charging System . For A/C compressor, REFER to Climate Control - DATC or REFER to Climate Control - EMTC .

A6 CHECK THE A/C SYSTEM PRESSURE

Test the A/C refrigerant system. REFER to Climate Control - DATC or REFER to Climate Control - EMTC .

Does the A/C system pressure exceed specifications?

Yes

Climate Control - DATC or REFER to Climate Control - EMTC for A/C system diagnosis.

The FEAD system is operating correctly at this time. A short intermittent squeal may have occurred during engine start up and shut down or during very rapid engine acceleration and decelerations, such as WOT 1-2 and 2-3 shifts or 2-3 and 3-4 back-out shifts on automatic transmissions and WOT 1-2 and 2-3 shifts and any combination of rapid downshifting on manual transmissions. These unique short-term momentary events are expected, and are due to the higher system inertias required to meet the electrical and cooling demands on vehicle systems.