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Fault memory
The failure of short-term problems and the sensors are recorded in the fault memory of the control unit. Recorded fault can be read in the workshops with a special device self-MAZDA (SST 49H0189A1). The DTC provides information about where in the ignition or injection should look for the fault. To determine the specific fault is required detailed verification directory. Furthermore, most inspections require the use of special devices, which are generally lacking in the set home workshop. So here are just some general guidelines for verification. Detailed inspection should be carried out in a specialized workshop. General information on verification  | If the unit is self-identified fault, for example, the coolant temperature sensor fault may also be inside the control unit. The fault can be determined or replace the sensor, or for further details, check with the help of special instruments (carried out in the workshop). |
 | Workshops do not take back the purchased, but unused items. |
| - Disconnect the cable, check the reliability of the electrical connections, remove the corrosion.
- Check the connection cables.
- Check resistance of faulty parts and compare with the desired value.
- Check wiring to the control unit on the current flow using an ohmmeter
| When the battery is disconnected, a fault in the control unit memory is erased. If the same error occurs during further operation, they are written back to memory. |
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