ON-BOARD DIAGNOSTIC SYSTEM DIAGNOSTIC DATA MEMORY FUNCTION [MZI-3.7]

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Features

• A diagnostic data memory function has been adopted for storing/clearing engine control system diagnostic data.

Memory Function

• The following diagnostic data can be stored in the PCM using the memory function:

― DTC count

― DTCs

― Freeze frame data

― On-board diagnostic system status

• A DTC is stored in the PCM when an engine control system malfunction occurs. This stored DTC can then be read-out using the Mazda Modular Diagnostic System (M-MDS) and is displayed as a seven character code (PXXXX:XX).

• The DTC is stored in or cleared from the PCM according to the drive cycle count setting.

Initialization Function

• Diagnostic data stored in the PCM can be cleared using the initialization function.