Inspection and Verification - Engine Performance
WARNING: This page is about a different car, the 2013 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the customer concern by operating the engine to duplicate the condition.
- Visually inspect for obvious signs of mechanical damage. Refer to the following chart.VISUAL INSPECTION
Mechanical - Engine coolant leaks
- Engine oil leaks
- Fuel leaks
- Damaged or severely worn parts
- Loose mounting bolts, studs and nuts
- Compressor housing inlet and outlet circuit and piping (GTDI only)
- Turbine housing inlet, outlet and piping (GTDI only)
- Turbocharger actuator tubing or linkage (GTDI only)
- If the inspection reveals obvious concerns that can be readily identified, repair as necessary.
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NOTE: Make sure to use the latest scan tool software release.
If the cause is not visually evident, connect the scan tool to the DLC .
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NOTE: The VCM LED prove out confirms power and ground from the DLC are provided to the VCM .
If the scan tool does not communicate with the VCM :
- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM .
- MODULE COMMUNICATIONS NETWORK , No Power To The Scan Tool, to diagnose no power to the scan tool.
- If the scan tool does not communicate with the vehicle:
- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- MODULE COMMUNICATIONS NETWORK to diagnose no response from the PCM.
- Carry out the network test.
- If the scan tool responds with no communication for one or more modules, REFER to MODULE COMMUNICATIONS NETWORK .
- If the network test passes, retrieve and record continuous memory DTCs.
- Clear the continuous DTCs and carry out the self-test diagnostics for the PCM.
- If the DTCs retrieved are related to the concern, go to the DTC Chart, REFER to DTC CHART: PCM .
- If no DTCs related to the concern are retrieved, Go to SYMPTOM CHART - ENGINE .