Lincoln Navigator: Acceleration Control / Acceleration Control. Diagnosis and Testing

Lincoln Navigator 2018-2025 Workshop Manual / Fuel System - General Information / Acceleration Control / Acceleration Control. 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	P060D:00	Internal Control Module Accelerator Pedal Position Performance: No Sub Type Information	GO to Pinpoint Test DK
PCM	P1575:00	Pedal Position Out Of Self Test Range: No Sub Type Information	GO to Pinpoint Test DK
PCM	P2122:00	Throttle/Pedal Position Sensor/Switch 'D' Circuit Low: No Sub Type Information	GO to Pinpoint Test DK
PCM	P2123:00	Throttle/Pedal Position Sensor/Switch 'D' Circuit High: No Sub Type Information	GO to Pinpoint Test DK
PCM	P2127:00	Throttle/Pedal Position Sensor/Switch 'E' Circuit Low: No Sub Type Information	GO to Pinpoint Test DK
PCM	P2128:00	Throttle/Pedal Position Sensor/Switch 'E' Circuit High: No Sub Type Information	GO to Pinpoint Test DK
PCM	P2138:00	Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation: No Sub Type Information	GO to Pinpoint Test DK

Symptom Chart

Symptom	Possible Sources	Action
The engine has a lack/loss of power.	Refer to the pinpoint test.	GO to Pinpoint Test DK

Pinpoint Tests

PINPOINT TEST DK: ACCELERATOR PEDAL POSITION (APP) SENSOR

Introduction

NOTE: After clearing the APP sensor DTC to verify a repair or an intermittent concern, apply the accelerator pedal before carrying out the self-test. Take 10 seconds to carry out a full sweep of the accelerator pedal from fully released to fully applied and back to fully released.

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P060D:00	Internal Control Module Accelerator Pedal Position Performance: No Sub Type Information	Sets when the PCM detects a concern identifying an issue with an APP sensor signal or with processing the brake pedal sensor input. This DTC sets when an error occurs in the PCM . Verify the PCM is at the latest calibration level.
PCM P1575:00	Pedal Position Out Of Self Test Range: No Sub Type Information	Sets when the PCM detects either the APP1 or APP2 input is greater than the expected value. The PCM monitors the APP sensor inputs to determine if the APP1 and APP2 signals are less than an expected value during the KOEO self-test. Make sure the floor mat is not interfering with the accelerator pedal. Repeat the self-test without applying the accelerator pedal. Diagnose any APP sensor circuit Diagnostic Trouble Codes (DTCs) first.
PCM P2122:00	Throttle/Pedal Position Sensor/Switch 'D' Circuit Low: No Sub Type Information	Sets when the PCM detects the accelerator pedal position 1 (APP1) is out of self-test range low.
PCM P2123:00	Throttle/Pedal Position Sensor/Switch 'D' Circuit High: No Sub Type Information	Sets when the PCM detects the accelerator pedal position 1 (APP1) is out of self-test range high.
PCM P2127:00	Throttle/Pedal Position Sensor/Switch 'E' Circuit Low: No Sub Type Information	Sets when the PCM detects the accelerator pedal position 2 (APP2) is out of self-test range low.
PCM P2128:00	Throttle/Pedal Position Sensor/Switch 'E' Circuit High: No Sub Type Information	Sets when the PCM detects the accelerator pedal position 2 (APP2) is out of self-test range high.
PCM P2138:00	Throttle/Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation: No Sub Type Information	Sets when the PCM detects the APP sensor inputs APP1 and APP2 disagree on the position of the accelerator pedal by greater than an expected value. The PCM compares the APP sensor information from APP1 and APP2 signals.

Possible Sources

Accelerator pedal applied during KOEO self-test
PCM programming
APP sensor (9F836)
PCM (12A650)

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Accelerator Pedal. Removal and Installation

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Other information:

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Front Stabilizer Bar Link. Removal and Installation

Removal

NOTICE: Suspension fasteners are critical parts that affect the performance of vital components and systems. Failure of these fasteners may result in major service expense. Use the same or equivalent parts if replacement is necessary. Do not use a replacement part of lesser quality or substitute design. Tighten fasteners as specified.

NOTE: Removal steps in this procedure may contain installation details.

With the vehicle in NEUTRAL, position it on a hoist.
Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation).

NOTICE: Do not use power tools to remove or install the stabilizer bar