1. DTC C0040[9E] description
The EHCU receives a stoplight switch signal from the ECM via the CAN communication circuit. The EHCU monitors the stoplight switch signal and master cylinder pressure sensor signal. If the EHCU detects a correlation error in the stoplight switch signal and the master cylinder pressure, this DTC is set.
2. Condition for setting DTC C0040[9E]
Condition for running the DTC
- The vehicle is running at a speed of 11 km/h {6.8 mph} or more.
- The accelerator pedal is depressed.
Condition for setting the DTC
- The EHCU detects that the stoplight switch is ON for 60 seconds and that the master cylinder pressure is low.
3. Action taken when DTC C0040[9E] sets
- ESC warning light illumination (Models equipped with ESC)
- ABS control inhibition
- TCS control inhibition (Models equipped with ESC)
- ESC control inhibition (Models equipped with ESC)
- HSA control inhibition (Models with ESC)
- ISS control inhibition (Models with ESC)
- Hill Descent Control inhibition (Models with ESC)
- Brake Assist control inhibition (Models with ESC)
- ESS control inhibition (Models with ESC)
- Trailer sway control inhibition (Models equipped with ESC)
- External braking request brake retention control inhibition (Models equipped with stereo cameras)
- External braking request brake pressurization control inhibition (Models equipped with stereo cameras)