P0225

CIRCUIT DESCRIPTION
The Accelerator Pedal Position (APP) module provides a voltage signal that changes relative to the accelerator pedal position. There are 3 sensors which are located within the APP module that are scaled differently.

CONDITIONS FOR RUNNING THE DTC
The ignition is ON.

CONDITIONS FOR SETTING THE DTC
^ The reference voltage on the APP 3 is less than 4.8 volts
^ The condition was met for 2 seconds.

ACTION TAKEN WHEN THE DTC SETS
^ The control module stores the DTC information into memory when the diagnostic runs and fails.
^ The Malfunction Indicator Lamp (MIL) will not illuminate.
^ The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Failure Records.
^ The driver information center, if equipped, may display a message.

CONDITIONS FOR CLEARING THE DTC
^ A current DTC Last Test Failed clears when the diagnostic runs and passes.
^ A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic.
^ Use a scan tool in order to clear the DTC.

DIAGNOSTIC AIDS
An intermittent may be caused by the following conditions:
^ Faulty connections
^ Rubbed-through wire insulation
^ A broken wire inside the insulation

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

TEST DESCRIPTION

Steps 1-8:

The number below refers to the step number on the diagnostic table.
2. This step will check all 5-volt reference circuits.