22

VIBRATION CONCERNS (ENGINE)

DESCRIPTION

• Vibration from under hood or driveline.

POSSIBLE CAUSE

• Loose attaching bolts or worn parts

• Components malfunction such as worn parts

STEP

INSPECTION

RESULTS

ACTION

1

• Inspect the following components for loose attaching bolts or worn parts:

• Cooling fan

• Condenser fan

• Drive belt and pulley

• Engine mounts

• Exhaust system

• Is there any malfunction?

Yes

Readjust installation position or retighten the suspect parts.

Repair or replace the malfunctioning part according to the inspection results for other parts.

No

Inspect the following systems:

• Wheels

• Transmission and mounts

• Driveline

• Suspension

Repair or replace the malfunctioning part according to the inspection results.

2

Verify the test results.

• If normal, return to the diagnostic index to service any additional symptoms.

  (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.5].)

• If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.

• If the vehicle is repaired, troubleshooting is completed.

• If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.