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STEP
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INSPECTION
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RESULTS
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ACTION
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1
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Verify the following:
• Proper dipstick
• Proper engine viscosity
• Engine oil level
Are all items normal?
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Yes
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Go to the next step.
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No
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Service if necessary.
Repeat Step 1.
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2
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Remove if necessary to inspect the turbocharger.
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Note
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• Do not remove the turbocharger.
Inspect if the turbocharger compressor wheel is bent, damaged, or interfering with housing on vehicle.
Is there any malfunction?
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Yes
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Replace the turbocharger.
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No
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Go to the next step.
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3
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Inspect if the turbocharger compressor wheel locknut is loose or has fallen down inside turbocharger.
Is there any malfunction?
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Yes
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Replace the turbocharger.
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No
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Go to the next step.
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4
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Turn the turbocharger compressor wheel by hand.
Does the wheel turn easily and smoothly?
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Yes
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Go to the next step.
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No
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Replace the turbocharger.
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5
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Inspect if the turbocharger turbine wheel is damaged, cracked or interfering with the housing on the vehicle.
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Note
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• Inspect all fins on each turbine wheel.
Is there any malfunction?
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Yes
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Replace the turbocharger.
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No
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Go to the next step.
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6
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Is any engine oil found inside the turbocharger turbine housing?
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Yes
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Excessive amount of oil is found:
Replace the turbocharger.
Small amount of oil is found:
Wipe oil off of the vehicle, then go to the next step.
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No
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Go to the next step.
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7
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Is any engine oil found inside the turbocharger compressor housing?
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Yes
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Wipe oil off of vehicle, then go to the next step.
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No
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Go to the next step.
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8
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Is any engine oil found around oil pipes attached on turbocharger center housing?
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Yes
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If oil leaks from a damaged pipe, replace the oil pipe.
Then, go to the next step.
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No
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Go to the next step.
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9
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Is any engine oil found inside air intake pipes or hoses?
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Yes
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Wipe engine oil off.
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No
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Turbocharger is normal.
Install all parts removed in Step 2.
Then go to the next step.
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10
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Is the engine compression correct?
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Yes
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Inspect for oil leakage from outside of engine.
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No
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Inspect the following:
• Damaged valve seat
• Worn valve stem and valve guide
• Worn or stuck piston ring
• Worn piston, piston ring or cylinder
Service if necessary.
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11
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Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If the malfunction remains, inspect the related Service Information and perform repair or diagnosis.
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- If the vehicle is repaired, troubleshooting completed.
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- If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if later calibration is available. Retest.
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