P2299

P2299-BRAKE PEDAL POSITION/ACCELERATOR PEDAL POSITION INCOMPATIBLE

For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the ignition on and no Brake Switch or APP Sensor faults present.

- Set Condition:
The Powertrain Control Module (PCM) recognizes a brake application following the APPS showing a fixed pedal opening. Temporary or permanent. Internally the PCM will reduce throttle opening below driver demand. One trip fault and the code will be set within five 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.

Diagnostic Test

1. DTC INFORMATION

NOTE: If a pedal assembly becomes mechanically stuck the voltage output will stay fixed, if this is also Followed by a long application of the brakes this code will set.

NOTE: When this code sets the pedal position in the PCM software will ramp to idle. If the Pedal voltage changes OR the brake pedal is released, the pedal position in the PCM software will ramp up to the pedal position and the ETC light will go out.

1. With the scan tool, read DTCs and record the related Freeze Frame data.
2. Diagnose all other Stop Lamp Switch and APP Sensor codes before continuing.
3. This code can be set by a driver who uses both feet while driving, one for the Accelerator Pedal and the other for the Brake Pedal.

NOTE: The most likely cause of this DTC is caused by the customer Brake Torquing the engine by pressing the Accelerator pedal and the pressing the Brake Pedal.

4. Ask the driver of the vehicle if these conditions apply to their driving habits.

Are the listed conditions part of the customers driving habits?

Yes

- Advise the customer of what caused the DTC. This is normal operation of a ETC equipped vehicle because of safety issues.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Go To 2

2. STOP LAMP SWITCH OPERATION
1. With the scan tool, read both Stop Lamp Switch statuses while pressing and releasing the Brake Pedal.

Does the scan tool display the Pressed and Released while pressing and releasing the Pedal?

Yes

- Go To 3

No

- Check the Stop Lamp Switch for proper installation and check the related circuits for opens and shorts using the appropriate wiring diagram. If OK, replace the Stop Lamp Switch assembly. Stop Lamp Switch - Removal.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

3. APP SENSOR SWEEP
1. Ignition on, engine not running.
2. With the scan tool, monitor both APP Sensor voltage readings.
3. Slowly press the accelerator pedal from idle until it reaches the end stop near the floor.
4. APPS No.1 voltage should start at approximately 0.45 of a Volt and increase to approximately 4.6 Volts with a smooth transition.
5. APPS No.2 voltage should start at approximately 0.22 of a Volt and increase to approximately 2.31 Volts with a smooth transition.

Does the voltage for the appropriate sensor follow the list specification?

Yes

- Perform the INTERMITTENT CONDITION diagnostic procedure. Intermittent Condition Test.

No

- Check the Signal and Return circuits for opens and shorts. If OK, Replace the APP Sensor Assembly. Removal. After installation is complete, with a scan tool select the ETC RELEARN function to relearn the APPS values.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.