Inspection and Verification

NOTE: This service information provides mechanical diagnosis of the turbocharger assembly. If there is a Malfunction Indicator Lamp (MIL) illuminated, or DTCs are present, these should be diagnosed prior to performing turbocharger mechanical diagnosis. Refer to the ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) .

1.

Verify the customer concern.

2.

Inspect the entire turbocharger system for obvious signs of damage or other mechanical concerns, using the following chart.

Visual Inspection Chart

Mechanical
Oil inlet pipe and connection Oil outlet pipe and connection Compressor housing inlet circuit and piping Compressor housing outlet circuit and piping Turbine housing inlet circuit and piping Turbine housing outlet circuit and piping Turbocharger actuator tubing or linkage

3.

If the concern(s) remains after the inspection, GO to Symptom Chart .

4.

If a driveability condition still exists, refer to the ENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID) .