Chart 5

WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.

Unique Idle Concerns: Fast Idle
Diesels/Runs On

NOTE: For E-Series, Escape/Kuga, F-650/F-750, Motorhome and Transit Connect, an elevated idle is present on new vehicles. Verify the vehicle has been driven for 5 consecutive miles, or drive the vehicle for 5 consecutive miles if necessary, before continuing diagnosis.

NOTE: If the vehicle runs normally with the ignition in the OFF position, check for a damaged ignition switch, an IGN START/RUN or ISP-R circuit short to voltage, or a VPWR circuit short to voltage.

SYSTEM/COMPONENT	REFERENCE (Pinpoint Test unless noted)
Base Engine	Check for air leaks, including correct sealing of intake manifold and components or vacuum lines attached to intake air (such as the PCV or EGR valve or vacuum lines). REFER to the Engine System - General Information article, Diagnosis And Testing to continue diagnosis.
Cooling System	Verify the engine operates at normal temperature. REFER to the Engine Cooling article or NO DIAGNOSTIC TROUBLE CODES (DTCS) PRESENT SYMPTOM CHART INDEX , to diagnose any cooling system concerns that are present.
Intake Air System Leaks	GO to PINPOINT TEST HU .
Additional Testing	For the vehicle runs normally with the ignition in the OFF position, GO to PINPOINT TEST B . For all others, GO to PINPOINT TEST Z .