DTC C0023 62/C0040 64: Brake Switch: Notes
DTC C0023 62/C0040 64 DETECTION CONDITIONS AND POSSIBLE CAUSES (DYNAMIC STABILITY CONTROL)
| DTC |
C0023:62, C0040:64 |
Brake switch |
| DETECTION CONDITION |
- C0023:62
- Brake light ON signal is not input even though the brake light request signal is input.
- Brake light ON signal is input even though the brake light request signal is not input.
- Communication error with brake light is detected in CAN communication via Rear Body Control Module (RBCM).
- C0040:64
- Brake switch ON signal is input for 6 min or more
when driving at a vehicle speed of 20 km/h {12 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 |
- C0023:62
- Illuminates the smart city brake support (SCBS) indicator light (amber).
- Inhibits the smart city brake support (SCBS) control.
- C0040:64
- Illuminates the TCS/DSC indicator light and smart city brake support (SCBS) indicator light (amber)*1
.
- Tire pressure monitoring system warning light*1
illuminates after flashes.
- Inhibits the brake assist control, hill launch assist (HLA), TPMS*1
, and smart city brake support (SCBS)*1
controls.
*1
: If equipped. |
| POSSIBLE CAUSE |
- Open or short circuit in wiring harness between the brake switch and PCM terminal 2G
- Brake switch malfunction
- Poor connection at connectors (female terminal)
- Rear Body Control Module (RBCM) malfunction
- PCM malfunction
|
 Courtesy of MAZDA MOTORS CORP.
|