Lincoln Navigator Manuals

Lincoln Navigator: Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Powertrain Control Module (PCM) Input and Output Controls. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Engine / Electronic Engine Controls - 3.5L EcoBoost (272kW/370PS) / Powertrain Control Module (PCM) Input and Output Controls. 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 P0219:00 Engine Overspeed Condition: No Sub Type Information GO to Pinpoint Test Z
PCM P0297:00 Vehicle Overspeed Condition: No Sub Type Information GO to Pinpoint Test Z
PCM P0685:00 ECM/PCM Power Relay Control Circuit/Open: No Sub Type Information GO to Pinpoint Test B
PCM P068A:00 ECM/PCM Power Relay De-Energized - Too Early: No Sub Type Information GO to Pinpoint Test B
PCM P06A6:00 Sensor Reference Voltage 'A' Circuit Range/Performance: No Sub Type Information GO to Pinpoint Test C
PCM P06A7:00 Sensor Reference Voltage 'B' Circuit Range/Performance: No Sub Type Information GO to Pinpoint Test C
PCM P06A8:00 Sensor Reference Voltage 'C' Circuit Range/Performance: No Sub Type Information GO to Pinpoint Test C
PCM P06B8:00 Internal Control Module Non-Volatile Random Access Memory (NVRAM) Error: No Sub Type Information GO to Pinpoint Test B
PCM P2610:00 ECM/PCM Engine Off Timer Performance: No Sub Type Information GO to Pinpoint Test QB

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
Driver Aid & Information > Warning Indicators/Messages/Chimes > Electronic Throttle Control (Wrench Image) > Stays On GO to Pinpoint Test Z
Driver Aid & Information > Warning Indicators/Messages/Chimes > Service Engine Soon (Engine Image) > Stays On GO to Pinpoint Test Z
Driver Aid & Information > Warning Indicators/Messages/Chimes > Transmission > Stays On GO to Pinpoint Test Z
Start/Run/Move > Starting > No Crank > Always GO to Pinpoint Test C
Start/Run/Move > Starting > No Crank > Intermittent GO to Pinpoint Test Z
Start/Run/Move > Starting > Slow Crank/Battery > Intermittent GO to Pinpoint Test Z
Start/Run/Move > Starting > Hard Start/Long Crank > Always GO to Pinpoint Test C
Start/Run/Move > Starting > Hard Start/Long Crank > Intermittent GO to Pinpoint Test Z
Start/Run/Move > Starting > Auto-Start-Stop > Inoperative GO to Pinpoint Test Z
Start/Run/Move > Running > Engine Won't Shut Off > Always GO to Pinpoint Test B
Start/Run/Move > Moving > Upshift Quality > Intermittent GO to Pinpoint Test Z
Start/Run/Move > Moving > Downshift Quality > Intermittent GO to Pinpoint Test Z
Driving Performance > Runs Rough > All Running Modes > Intermittent GO to Pinpoint Test Z
Driving Performance > Idle Quality > Rolling > Intermittent GO to Pinpoint Test Z
Driving Performance > Stalls/Quits > At Idle > Intermittent GO to Pinpoint Test Z
Driving Performance > Backfires > At Idle > Intermittent GO to Pinpoint Test Z
Driving Performance > Backfires > Acceleration > Intermittent GO to Pinpoint Test Z
Driving Performance > Backfires > Deceleration > Intermittent GO to Pinpoint Test Z
Driving Performance > Lack/Loss of Power > Acceleration > Intermittent GO to Pinpoint Test Z
Driving Performance > Lack/Loss of Power > Cruise/ Steady Speed > Intermittent GO to Pinpoint Test Z
Driving Performance > Spark Knock > Acceleration > Intermittent GO to Pinpoint Test Z
Driving Performance > Spark Knock > Cruise/ Steady Speed > Intermittent GO to Pinpoint Test Z
Driving Performance > Poor Fuel Economy > Highway Driving > Unloaded GO to Pinpoint Test Z
Driving Performance > Poor Fuel Economy > Combined > Unloaded GO to Pinpoint Test Z
Driving Performance > Hesitates/Stumble > Acceleration > Intermittent GO to Pinpoint Test Z
Driving Performance > Hesitates/Stumble > Cruise/ Steady Speed > Intermittent GO to Pinpoint Test Z

Pinpoint Tests


PINPOINT TEST B: POWERTRAIN CONTROL MODULE (PCM) POWER RELAY
Introduction
Refer to Wiring Diagrams Cell 024 for schematic and connector information.

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P0685:00 ECM/PCM Power Relay Control Circuit/Open: No Sub Type Information Sets when the ISP-R circuit indicates the ignition is in the OFF, ACC, or LOCK mode, and the amount of time the PCM remains powered through the PCM power relay exceeds a predetermined amount of time. Ability to communicate with the PCM when the ignition is in the OFF, ACC, or LOCK mode indicates a hard fault.
PCM P068A:00 ECM/PCM Power Relay De-Energized - Too Early: No Sub Type Information Sets when the non volatile random access memory write did not complete successfully after the ignition key was turned OFF, prior to PCM shutdown. This DTC also sets when the PCM power relay is de-energized too early.
PCM P06B8:00 Internal Control Module Non-Volatile Random Access Memory (NVRAM) Error: No Sub Type Information Sets when the PCM detects a concern with the ability of the PCM to correctly store permanent Diagnostic Trouble Codes (DTCs). Check for other Diagnostic Trouble Codes (DTCs) and diagnose those first. Check for aftermarket performance products. Check for an electrical or charging system concern. If an updated calibration is available, update the calibration to the latest level. If an updated calibration is not available, clear the Diagnostic Trouble Codes (DTCs) and repeat the self-test. If this DTC is retrieved after a PCM reprogramming, turn the ignition OFF and allow the PCM to complete a normal power down sequence.

Possible Sources

  • PCM power circuitry concern
  • PCM power relay (12A646)
  • PCM (12A650)
PINPOINT TEST C: REFERENCE VOLTAGE (VREF)
Introduction
Refer to Wiring Diagrams Cell 024 for schematic and connector information.

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P06A6:00 Sensor Reference Voltage 'A' Circuit Range/Performance: No Sub Type Information Sets when the PCM detects the VREF circuit is not within a calibrated voltage range. All other Diagnostic Trouble Codes (DTCs) should be diagnosed first.
PCM P06A7:00 Sensor Reference Voltage 'B' Circuit Range/Performance: No Sub Type Information Sets when the PCM detects the VREF circuit is not within a calibrated voltage range. All other Diagnostic Trouble Codes (DTCs) should be diagnosed first.
PCM P06A8:00 Sensor Reference Voltage 'C' Circuit Range/Performance: No Sub Type Information Sets when the PCM detects the VREF circuit is not within a calibrated voltage range. All other Diagnostic Trouble Codes (DTCs) should be diagnosed first.

Possible Sources

  • Sensor circuitry concern
  • APP sensor (9F836)
  • Air conditioning pressure sensor (19D594)
  • Brake vacuum sensor
  • Crankcase pressure sensor (6758)
  • CKP sensor (6C315)
  • CMP sensor (6B288)
  • Differential pressure feedback EGR sensor
  • Electric EGR valve
  • Electronic throttle body TP sensor (9E928)
  • Exhaust pressure sensor
  • Fuel pressure sensor (9F972)
  • FRP sensor (6B288)
  • Fuel rail pressure temperature sensor (9G756)
  • Fuel tank pressure sensor (9C052)
  • Generator current sensor (14B357)
  • MAP sensor (9F479)
  • MAPT sensor (9F479)
  • MAP / CAC temperature sensor (9F479)
  • MAP / IAT2 sensor (9F479)
  • Particulate filter pressure sensor (9G824)
  • Turbocharger boost pressure sensor (9F479)
  • Turbocharger boost pressure /CAC temperature sensor (9F479)
  • Turbocharger wastegate motor
  • Wastegate vacuum sensor (9F479)
  • PCM (12A650)
PINPOINT TEST QB: KEEP ALIVE POWER (KAPWR)
Introduction
Refer to Wiring Diagrams Cell 025 for schematic and connector information.

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P2610:00 ECM/PCM Engine Off Timer Performance: No Sub Type Information Sets when the PCM detects the difference between the engine off time and the central processing unit (CPU) time exceeds a calibrated limit for a calibrated amount of time. This DTC may set with other Diagnostic Trouble Codes (DTCs). Check for all other Diagnostic Trouble Codes (DTCs) and diagnose those first. If DTC P2610 sets after a module programming, disregard this DTC . Clear the Diagnostic Trouble Codes (DTCs) and repeat the PCM self-test.

Possible Sources

  • Battery terminal condition
  • PCM circuitry concern
  • PCM
PINPOINT TEST Z: INTERMITTENT
Introduction

Normal Operation and Fault Conditions

This pinpoint test is intended to diagnose and isolate intermittent concerns for all EEC subsystems. Parameter identifiers (PIDs) corresponding to a circuit can be used to aid in identifying the intermittent cause. Some circuits do not have an associated PID or the PID may not be available and must be measured using a digital multimeter.

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P0219:00 Engine Overspeed Condition: No Sub Type Information Sets when the PCM detects the vehicle is operated in a manner which caused the engine speed to exceed a calibrated limit. The engine RPM is continuously monitored and evaluated by the PCM . This DTC sets when the RPM exceeds the calibrated limit set within the PCM . This DTC may be accompanied by other Diagnostic Trouble Codes (DTCs). For additional information on the engine RPM limiter, refer to Powertrain Control Software. If DTC P1285 or P1299 is present, disregard DTC P0219 at this time. Diagnose DTC P1285 or P1299 first. If there are no other symptoms, return the vehicle to the customer with information about the DTC.
PCM P0297:00 Vehicle Overspeed Condition: No Sub Type Information Sets when the PCM detects the vehicle is operated in a manner which caused the vehicle speed to exceed a calibration limit. The vehicle speed is continuously monitored and evaluated by the PCM . For additional information on the vehicle speed limiter, refer to Powertrain Control Software. If there are no other symptoms, return the vehicle to the customer with information about the DTC .

Possible Sources

  • Wiring, terminals, or connectors
  • Mechanical concern
  • Suspect sensor concern

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    Wheel to Hub Runout Minimization. General Procedures

    Check

    NOTE: Wheel-to-hub optimization is important. Clearance between the wheel and hub can be used to offset or neutralize the Road Force® or run-out of the wheel and tire assembly. For every 0.001 inch of wheel-to-hub clearance, the Road Force® can be affected between 1 and 3 pounds depending on the tire stiffness.

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