FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
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P2299






P2299-BRAKE PEDAL POSITION - ACCELERATOR PEDAL POSITION INCOMPATIBLE



- When Monitored:
With the ignition on and no Brake Switch or Accelerator Pedal Position sensor DTCs present.

- Set Condition:
The PCM detects that the Brake Switch and the Accelerator Pedal are both pressed for a calculated amount of time. One trip fault and the code will be set within 5 seconds. ETC light will illuminate, the light will only stay illuminated while DTC is active.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Pre-Diagnostic Troubleshooting Procedure

1. DTC IS ACTIVE

NOTE: If a Accelerator Pedal assembly becomes mechanically stuck, the output voltage will stay fixed. If this is followed by a long application of the brakes, this DTC will set.

NOTE: Diagnose any Brake Switch or APPS DTCs before continuing with this test.

NOTE: This DTC will set if the PCM detects that the Accelerator Pedal and the Brake Switch are both pressed for a specific amount of time.

1. Start the engine and allow it to reach operating temperature.

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts or fan. Do not wear loose clothing. Failure to follow these instructions may result in possible serious or fatal injury.

2. With the scan tool select View DTCs.

NOTE: If the DTC does not reset it may be necessary to test drive the vehicle.

Is the DTC Active at this time?

Yes

- Go to 2

No

- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. Checking for an Intermittent DTC

2. STOP LAMP SWITCH
1. With a scan tool, monitor the status of Brake Switch 1 and Brake Switch 2.
2. Pressed and release the brake pedal.

NOTE: The status for each switch should change appropriately when the brake pedal is pressed and released.

Does the status change as described above?

Yes

- Go to 3

No

- Check the Stop Lamp Switch for proper adjustment and installation. Check all related circuits for an open or shorted condition using the appropriate wiring diagram. If no other problems are found, replace the Stop Lamp Switch.
- Perform the PCM Verification Test. PCM Verification Test

3. ACCELERATOR PEDAL POSITION SENSOR
1. Turn the ignition on.
2. With a scan tool, monitor both APP Sensor voltage readings.
3. Slowly press the Accelerator Pedal until it reaches the end stop.
4. The APPS 1 voltage should start at approximately 0.875 volts and increase to approximately 4.5 volts with a smooth transition.
5. The APPS 2 voltage should start at approximately 0.45 volts and increase to approximately 2.3 volts with a smooth transition.

Does the sensor voltage change as described above when the Accelerator Pedal was pressed?

Yes
Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. Checking for an Intermittent DTC
No

- Check the appropriate APP Sensor circuits for an open and shorted condition. If no problems are found, replace the APP Sensor Assembly. After installation, with a scan tool, perform the ETC RELEARN function.
- Perform the PCM Verification Test. PCM Verification Test