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STEP
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INSPECTION
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ACTION
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1
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For noises/vibrations that change with engine speed
• Are there any malfunctions with the following?
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- Torque converter
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- ATF level (low) pump cavitation
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- Oil pump
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- Engine drive accessories
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- Cooler lines causing interference
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- Drive plate
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Yes
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Service if necessary
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No
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Go to the next step
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2
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For noises/vibrations that change with vehicle speed
• Are there any malfunctions with the following?
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- Engine mount
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- Tires
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- Drive shaft or joint shaft
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- Differential (final drive/chain)
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- Suspension
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- Planetary gear sets
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- Chain grounding to chain pan
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- Forward one-way clutch
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- Torque converter
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Yes
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Service if necessary
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No
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Go to the next step
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3
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Other noise/vibrations
• Are there any malfunctions with the following?
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- Shift cable vibration grounding
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- Cooler lines causing interference
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Yes
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Service if necessary
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No
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The problem is resolved
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4
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• Verify the test results.
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- If normal, return to the diagnostic index to service any additional symptoms.
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- If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
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• If the vehicle is repaired, troubleshooting is completed.
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• If the vehicle is not repaired or additional diagnostic information is not available, replace the PCM.
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