P0225

Diagnostic Chart:

Wiring Diagram:

Circuit Description

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


Conditions for Setting the DTC

^ The PCM performs this DTC diagnostic continuously.

^ The reference voltage on the APP 3 sensor is less than 4.8 volts.

^ All of the diagnostic set conditions met for 2 seconds.


Action Taken When the DTC Sets

^ The PCM will turn ON the Service Throttle Soon lamp and limit power.

^ Multiple DTCs will be present.

Conditions for Clearing the MIL/DTC

^ A History DTC will clear when forty consecutive warm-up cycles that the diagnostic does not fail (coolant temperature has risen 5°C (40°F) from start up coolant temperature and engine coolant temperature exceeds 71°C (160°F) that same ignition cycle.

^ Use of a Scan tool


Diagnostic Aids

An intermittent may be caused by the following:

^ Poor connections

^ Rubbed through wire insulation

^ Broken wire inside the insulation

All 5 volt reference circuits must be checked for proper reference voltage Voltmeter accuracy is important.

Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table.

2. This step will check all 5 volt reference circuits.