P0225

DTC P0225 APP Sensor3 Circuit






Circuit Description

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

Conditions for Running the DTC

The ignition switch in the on position.

Conditions for Setting the DTC

^ The reference voltage on the APP 3 is below 4.8 volts.
^ All diagnostic set conditions met for 2 seconds.

Action Taken When the DTC Sets

^ The Service Throttle Soon lamp will not illuminate when one APP DTC sets. The PCM will only illuminate the Service Throttle Soon lamp when multiple APP DTCs set.
^ The PCM records the operating conditions at the time the diagnostic fails. This information is stored in the Failure Record.

Conditions for Clearing the MIL/DTC

^ A History DTC will clear after forty consecutive warm-up cycles, if this or any other emission related diagnostic does not report any failures.
^ Use of a scan tool will clear the DTC codes.

Diagnostic Aids

An intermittent may be caused by the following:

^ Poor connections
^ A rubbed through wire insulation
^ A broken wire inside of the insulation

All of the 5 volt reference circuits must be checked for a 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.