DTC C0023-62; C0040-64; Brake Switch Cannot Be Detected: Notes
DTC C0023-62; C0040-64; BRAKE SWITCH CANNOT BE DETECTED DETECTION CONDITION AND POSSIBLE CAUSE
| DTC |
C0023:62 |
Brake switch |
| C0040:64 |
| DETECTION CONDITION |
- C0023:62
- Brake light signal cannot be detected even though brake light signal is requested.
- Error detected in signal from body control module via CAN communication.
- C0040:64
- Accelerator pedal is depressed and brake switch on condition continues for 30 to 60 s while vehicle is driven at 10.8 km/h {6.71 mph} or more.
- A brake switch ON signal is not input when the brake fluid pressure sensor signal reaches the specified value.
|
| FAIL-SAFE FUNCTION |
|
| POSSIBLE CAUSE |
With Smart City Brake Support (SCBS)/Without Smart Brake Support (SBS)
- Brake switch malfunction
- Open or short circuit in wiring harness between brake switch terminal D and brake light relay terminal B
- Brake light relay malfunction
- Open or short circuit in wiring harness between brake light relay terminal D and DSC HU/CM terminal O
- Body control module malfunction
- Poor connection at each connector
- DSC HU/CM malfunction With Smart Brake Support (SBS)
- Brake switch malfunction
- Open or short circuit in wiring harness between brake switch terminal D and brake light unit terminal I
- Open or short circuit in wiring harness between brake light unit terminal H and DSC HU/CM terminal O
- Brake light unit malfunction
- Poor connection at each connector
- DSC HU/CM malfunction
|
| With Smart City Brake Support (SCBS)/Without Smart Brake Support (SBS) |
 Courtesy of MAZDA MOTORS CORP.
|
| With Smart Brake Support (SBS) |
 Courtesy of MAZDA MOTORS CORP.
|