Inspection and Verification

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: This article provides mechanical diagnosis of the turbocharger assembly. If there is a MIL illuminated or a DTC is present, these should be diagnosed prior to performing turbocharger mechanical diagnosis.

For a PCM DTC, REFER to: ELECTRONIC ENGINE CONTROLS - 3.5L ECOBOOST (272KW/370PS) . For driveability symptoms without a DTC, Refer to ENGINE CONTROLS - SYMPTOM CHARTS (EXCEPT DIESEL & HYBRID) .
Verify the customer concern.

Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Mechanical	Electrical
Air cleaner element Air cleaner intake pipe Air cleaner outlet pipe Charge air cooler Charge air cooler intake pipe Charge air cooler outlet pipe Coolant leaks Oil leaks Turbocharger coolant tubes Turbocharger housings Turbocharger intake tubes Turbocharger oil tubes Turbocharger wastegate control actuator linkages Wastegate valves	Electrical connector(s) Powertrain control module Turbocharger wastegate control actuators Wiring harness(es)

If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
If the concern is not visually evident, verify the symptom and refer to the Diagnostic Tab in the Ford diagnostic equipment.