DTC U0315; DSC HU/Cm Error: Notes
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.
DETECTION CONDITION AND POSSIBLE CAUSE
| DTC U0315:00 |
DSC HU/CM error |
| DETECTION CONDITION |
- When any of the following conditions is met:
- CAN communication line malfunction between DSC HU/CM and PCM
- DSC HU/CM internal malfunction
Diagnostic support note
- This is a continuous monitor (other).
- The check engine light does not illuminate.
- FREEZE FRAME DATA (Mode 2) is not available.
- Snapshot data is available.
- DTC is stored in the PCM memory.
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| FAIL-SAFE FUNCTION |
Not applicable |
| POSSIBLE CAUSE |
- CAN drive error (DSC HU/CM or PCM)
- CAN communication line malfunction between DSC HU/CM and PCM
- DSC HU/CM terminal AF-PCM terminal 2AK
- DSC HU/CM terminal AC-PCM terminal 2AL
- DSC HU/CM connector or terminals malfunction
- PCM connector or terminals malfunction
- DSC HU/CM malfunction
- PCM malfunction
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