DTC C0023-62: C0040-64: Brake Switch: Notes
WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
| DTC |
C0023:62, C0040:64 |
Brake switch |
| DETECTION CONDITION |
- C0023:62
- Brake light ON signal is not input even though the brake light reqiest signal is input.
- Brake light ON signal is input even though the brake light request signal is not input.
- Brake light ON signal is not input when the brake fluid pressure sensor signal reaches the specified value.
- Communication error with brake light is detected in CAN communication via 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.
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| FAIL-SAFE FUNCTION |
Refer to "DTC TABLE " and "Fail-safe Function Malfunction Contents". (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .) |
| POSSIBLE CAUSE |
- Open or short circuit in wiring harness between the brake switch and PCM terminal 2G
- Brake switch malfunction
- PCM malfunction
- Rear body control module (RBCM) and/or brake light relay malfunction
- DSC HU/CM malfunction
- Poor connection at connectors (female terminal)
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| Without Smart Brake Support (SBS) |
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| With Smart Brake Support (SBS) |
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