Circuit Description

Accelerator Pedal Position (APP) module provides a voltage signal that changes relative to accelerator pedal position. Three sensors are located within APP module and are scaled differently.

DTC will set when the following conditions are present:

• Ignition voltage is greater than 6.4 volts.
• Engine speed is greater than 300 RPM.
• Difference between APP 1 sensor and APP 2 sensor is greater than .23 volt (PCM compares pre-scaled voltage - internal to PCM).
• Difference between APP 1 sensor and APP 3 sensor is greater than .50 volt (PCM compares pre-scaled voltage - internal to PCM).
• No in range faults for APP 2 sensor or APP 3 sensor (PCM checks for high and low voltage faults).
• Conditions are met for 2 seconds.