P1515

CIRCUIT DESCRIPTION
The commanded Throttle Position (TP), based on Accelerator Pedal Position (APP) and possibly other limiting factors, is compared to the actual throttle position. The Powertrain Control Module (PCM) monitors the commanded and actual throttle position. This DTC sets if the PCM detects the condition.

CONDITIONS FOR RUNNING THE DTC
^ Other Electronic Throttle Control (ETC) DTCs are not set.
^ PCM processor DTCs are not present.
^ The ignition is in the crank or run position.
^ The ignition voltage is more than 8.5 volts with key ON engine OFF.
^ The ETC system is not in the battery saver mode.

CONDITIONS FOR SETTING THE DTC
The PCM detects that the commanded and actual throttle positions are not within a calibrated range of each other.

ACTION TAKEN WHEN THE DTC SETS
^ The control module illuminates the Malfunction Indicator Lamp (MIL) when the diagnostic runs and fails.
^ The control module records the operating conditions at the time the diagnostic fails. The control module stores this information in the Freeze Frame/Failure Records.

CONDITIONS FOR CLEARING THE MIL/DTC
^ The control module turns OFF the Malfunction Indicator Lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
^ 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 emission related diagnostic.
^ Use a scan tool in order to clear the MIL and the DTC.

DIAGNOSTIC AIDS
Inspect for the following:

IMPORTANT: Verify that the starting and charging Systems are operating properly. Low system voltage causes this DTC to set.

If you do not find any trouble, check for mechanical conditions or binding that may be temperature related. Components may not move freely in extreme heat or cold due to the presence of contaminants or ice formation.

If the condition is intermittent, refer to Intermittent Conditions. Intermittent Conditions

TEST DESCRIPTION

Steps 1-3:

Steps 4-18:

The numbers below refer to the step numbers on the diagnostic table.
3. If the TP indicated angle does not follow the movement of the throttle blade, and the TP sensor DTCs are not set, there is a mechanical condition with the throttle shaft or the TP sensor. Replace the throttle body assembly. Re-install the air inlet duct after repairs are completed.
18. When the PCM detects a condition within the ETC system other DTCs may set due to the many redundant tests run continuously on this system. Locating and repairing 1 individual condition may correct more than 1 DTC. Keep this in mind when reviewing captured DTC info.