Brake override system operation inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If the brake override system operates normally after performing the following inspection, the PCM detects DTC P2299:00.

Start the engine and let it idle.
Verify that the engine speed becomes less than 1, 200 rpm under the following conditions.
- Neutral (MTX)
- N position (ATX)
- Engine speed of 3, 000 rpm or more with accelerator pedal depressed
- Brake pedal depressed
  - If the engine speed becomes approx. 1, 200 rpm, clear the PCM DTC using the M-MDS. (System operation is normal.)
  - If the engine speed does not become approx. 1, 200 rpm, inspect for the following parts, then repair or replace the malfunctioning part:
- APP sensor (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION .)
- Neutral switch (MTX) (See NEUTRAL SWITCH INSPECTION .)
- CPP switch (MTX) (See CLUTCH PEDAL POSITION (CPP) SWITCH INSPECTION .)
- Brake switch No. 1 (See BRAKE SWITCH INSPECTION .)
- Brake switch No. 2 (See BRAKE SWITCH INSPECTION .)
- Communication between PCM and TCM (ATX) (See FOREWORD .)