Noise Occurs from V-ribbed Belt or Generator Assembly [12/2019 - 10/2022]: Procedure

1. Confirm the problem symptom.

   Result

   Symptom	Proceed to
   Noise occurs from V-ribbed belt.	A
   Noise occurs from generator assembly.	B

Result: 

B 

See step  6

Result: 

A 

See step  2

1. Check the V-ribbed belt for wear or damage.

   OK

   The V-ribbed belt is not worn or damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE V-RIBBED BELT. Refer to  REMOVAL [12/2019 - 10/2022] 

Result: 

OK 

See step  3

1. Check the grooves of the generator pulley with clutch for wear or damage.

   OK

   The grooves of the generator pulley with clutch are not worn or damaged.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE GENERATOR PULLEY WITH CLUTCH. Refer to  PROCEDURE - Step 6 

Result: 

OK 

See step  4

1. Start the engine and check the generator pulley with clutch for looseness.

   OK

   The generator pulley with clutch is not loose.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

TIGHTEN GENERATOR PULLEY WITH CLUTCH TO SPECIFIED TORQUE 

Result: 

OK 

See step  5

1. Remove the generator assembly.

   Refer to REMOVAL [12/2019 - 10/2022]

2. Check the installation condition of the generator pulley cap.

   OK

   The generator pulley cap is not loose or missing.

3. Check for forming of particles due to friction (for dry type pulley) or grease leaks (for wet type pulley).

   OK

   There are no large amounts of particles (for dry type pulley) or grease leaks (for wet type pulley).

4. Check the generator pulley with clutch for misalignment (interference with the generator assembly).

   OK

   The generator pulley with clutch is not misaligned (no interference with the generator assembly).

5. Turn the generator pulley with clutch clockwise and counterclockwise by hand and check for noise.

   OK

   Noise does not occur when turned in either direction.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

6. Turn the generator pulley with clutch clockwise and counterclockwise by hand and visually check for runout.

   OK

   The generator pulley with clutch does not have runout.

7. Inspect the generator pulley with clutch.

   Refer to PROCEDURE - Step 2

   Result

   Proceed to
   OK
   NG

Result: 

OK 

INSPECT PULLEY OTHER THAN GENERATOR ASSEMBLY PULLEY 

Result: 

NG 

REPLACE GENERATOR PULLEY WITH CLUTCH. Refer to  PROCEDURE - Step 6 

1. Perform a road test and check that noise does not occur when decelerating.

   OK

   Noise does not occur.

2. Stop the engine and check that generator pulley with clutch noise does not occur as the engine stops.

   OK

   Noise does not occur.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE GENERATOR PULLEY WITH CLUTCH. Refer to  PROCEDURE - Step 6 

Result: 

OK 

See step  7

1. Inspect the generator pulley with clutch.

   Refer to PROCEDURE - Step 2

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPAIR OR REPLACE GENERATOR ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022] 

Result: 

NG 

REPLACE GENERATOR PULLEY WITH CLUTCH. Refer to  PROCEDURE - Step 6