DTC C0020-11, C0020-12, C0020-13, C0020-49 Or C0020-71: Pump Motor, Pump Relay [DSC HU/Cm]: Outline
WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
| System malfunction location |
Pump motor, pump relay |
| Detection condition |
- C0020:11
- The motor relay signal does not correspond to the DSC HU/CM ON signal.
- C0020:12
- The motor monitor signal does not correspond to the DSC HU/CM OFF signal.
- C0020:13
- A condition is detected in which the motor relay voltage is less than the specification while the DSC HU/CM controls the pump relay at on.
- C0020:49
- The DSC HU/CM detects a pump motor drive circuit malfunction.
- C0020:71
- The DSC HU/CM detects a voltage decrease occurring in the pump motor after the pump motor operates.
|
| Fail-safe |
Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [DSC HU/CM (US)] .) |
| Possible cause |
- DSC HU/CM connector or terminals malfunction
- Short to ground or open circuit in DSC HU/CM power supply circuit
- Open circuit in DSC HU/CM ground circuit
- DSC HU/CM malfunction
- Pump motor stuck, open circuit, short circuit to ground, or short circuit to power supply
- Motor relay stuck, open circuit, short circuit to ground, or short circuit to power supply
|
 Courtesy of MAZDA MOTORS CORP.
|