DTC C0020-11; C0020-12; C0020-13; C0020-71; Pump Motor, Motor Relay: 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 & POSSIBLE CAUSE
| DTC |
C0020:11, C0020:12, C0020:13, C0020:71 |
Pump motor, motor relay |
| DETECTION CONDITION |
- C0020:11
- Motor relay signal does not correspond to DSC HU/CM OFF signal.
- C0020:12
- DSC motor monitor signal does not correspond to DSC HU/CM OFF signal.
- DSC motor monitor signal does not correspond to DSC HU/CM ON signal.
- C0020:13
- Motor relay signal does not correspond to DSC HU/CM ON signal.
- C0020:71
- DSC HU/CM motor monitor ON signal is not input within specified time limit or more when motor signal is switched from ON to OFF by DSC HU/CM.
|
| FAIL-SAFE FUNCTION |
- Illuminates the ABS warning light, TCS/DSC indicator light and smart city brake support (SCBS) indicator light (amber) *1
.
- Inhibits the ABS, TCS, DSC, brake assist control, and smart city brake support (SCBS) *1
controls.
*1:
If equipped. |
| POSSIBLE CAUSE |
- Fuse (MAIN 200A, ABS/DSCM 50A) malfunction
- Open or short circuit in DSC HU/CM internal motor relay, or stuck motor relay
- Open or short circuit in DSC HU/CM internal pump motor, or frozen pump motor
- Open circuit or short to ground in the wiring harness between the battery and DSC HU/CM terminal B
- Open circuit in the wiring harness between DSC HU/CM terminal AL and body ground
- Poor connection at connectors (female terminal)
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