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Noise Diagnosis - Rear Suspension

Special Tools

CH-39570 Chassis Ear

For equivalent regional tools, refer to Special Tools .

Step

Action

Yes

No

DEFINITION: Any noise emitted from the rear of the vehicle that is induced by VEHICLE SPEED or DRIVING TERRAIN as related to the rear suspension.

1

Did you review the General Description and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Suspension General Diagnosis

2

Attempt to duplicate the condition. Road test the vehicle.

Did you duplicate the condition?

Go to Step 3

System OK

3

Is the noise reactive to vehicle load or speed?

Go to Step 4

Go to Step 6

4

Perform the following inspections:

    • Inspect and adjust the tyre inflation. Refer to Vehicle Certification, Tyre Placard, Anti-Theft, and Service Parts ID Label .
    • Inspect for unusual tyre wear.
    • Inspect the wheel nuts for looseness. Refer to Fastener Tightening Specifications .

Did you find and correct the condition?

Go to Step 10

Go to Step 5

5

Inspect the rear wheel bearings. Refer to Wheel Bearings Diagnosis .

Did you find and correct the condition?

Go to Step 10

Go to Step 6

6

Bounce the rear of the vehicle in order to duplicate the noise.

Did you duplicate the noise?

Go to Step 7

Go to Step 9

7

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  2. Inspect the rear suspension components for looseness. Refer to Fastener Tightening Specifications .
  3. Inspect the rear suspension components for damage and repair as necessary.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

8

Inspect the rear shock absorber. Refer to Suspension Strut and Shock Absorber Testing - On Vehicle .

Did you find and correct the condition?

Go to Step 10

Go to Step 9

9

  1. Bounce the rear of the vehicle in order to locate the source of the noise, preferably by using the CH-39570 chassis ear or equivalent.
  2. If necessary, road test the vehicle.
  3. Repair or replace any defect component as necessary.

Did you find and correct the condition?

Go to Step 10

System OK

10

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3

   


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