Lincoln Navigator: Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Crankshaft Position System. Diagnosis and Testing

Lincoln Navigator 2018-2026 Workshop Manual / Engine / Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Crankshaft Position System. Diagnosis and Testing

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Module	DTC	Description	Action
PCM	P0315:00	Crankshaft Position System Variation Not Learned: No Sub Type Information	GO to Pinpoint Test JD
PCM	P0335:00	Crankshaft Position Sensor 'A' Circuit: No Sub Type Information	GO to Pinpoint Test JD
PCM	P0339:00	Crankshaft Position Sensor 'A' Circuit Intermittent: No Sub Type Information	GO to Pinpoint Test JD
PCM	P033F:00	Crankshaft/Camshaft Loss Of Synchronization: No Sub Type Information	GO to Pinpoint Test JD

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).

Symptom	Action
Start/Run/Move > Starting > Hard Start/Long Crank > Always	GO to Pinpoint Test JD

Pinpoint Tests

PINPOINT TEST JD: CRANKSHAFT POSITION (CKP) SENSOR

Introduction

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P0315:00	Crankshaft Position System Variation Not Learned: No Sub Type Information	Sets when the PCM has not learned the crankshaft pulse wheel tooth spacing. This DTC disables the misfire monitor. The misfire monitor neutral profile correction must be relearned after any engine rotational component installation or repair. Carry out the Misfire Monitor Neutral Profile Correction procedure using the scan tool. Refer to the Flash EEPROM , Neutral Profile Correction.
PCM P0335:00	Crankshaft Position Sensor 'A' Circuit: No Sub Type Information	Sets when the PCM detects the CKP sensor PIP pulse is missing for greater than a calibrated number of camshaft revolutions when the camshaft speed exceeds the equivalent speed of engine idle or the starter motor is engaged. An inactive CKP signal causes a no start condition. Monitor the RPM PID while cranking the engine. A value of 0 RPM indicates a CKP concern.
PCM P0339:00	Crankshaft Position Sensor 'A' Circuit Intermittent: No Sub Type Information	Sets when the PCM detects several erratic PIP pulses have occurred in the CKP sensor signal within a calibrated time period when the camshaft speed exceeds the equivalent speed of engine idle or the starter motor is engaged.
PCM P033F:00	Crankshaft/Camshaft Loss Of Synchronization: No Sub Type Information	Sets when the PCM detects the input signal from the CKP sensor or the CMP sensor is erratic.

Possible Sources

CKP sensor circuitry concern
Crankshaft pulse wheel
CKP sensor (6C315)
PCM (12A650)

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This document provides critical diagnostic knowledge required for successful repair outcomes. It identifies technical competencies expected by users of this manual.

Ford Diagnostic Assumptions

Ford diagnostics assume the vehicle concern described by the test title is currently present. Exceptions to this rule are noted in each test. Do not replace modules or other components as directed by a diagnostic if the concern is not present at the time of testing.