MEMORY FUNCTION [SJ6A-EL]

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• The memory function stores malfunction information detected in the malfunction detection function. Once malfunction information is stored, the memory will not be cleared even when the ignition switch is turned off (LOCK position) or the malfunction is repaired.
• The stored memory (malfunction information) can be cleared using the Mazda Modular Diagnostic System (M-MDS), or by disconnecting the negative battery cable.

Sending Freeze Frame Data

• The freeze frame data consists of data for vehicle and transmission control system operation conditions when malfunctions in the transmission control system are detected and stored in the TCM.
• There are modes 2 and 12 in the freeze frame data.
Freeze frame data (mode 2)
• Freeze frame data is stored at the instant the malfunction indicator lamp illuminates, and only a part of the DTC data is stored.
• For the freeze frame data, if there are several malfunctions in the engine control system, the data for the malfunction which occurred initially is stored. Thereafter, if a misfire or fuel injection control malfunction occurs, data from the misfire or fuel injection control malfunction is written over the initially stored data. However, if the initially stored freeze frame data is a misfire or fuel injection control malfunction, it is not overwritten.
Freeze frame data (mode 12)
• The data for DTCs currently detected is stored.
• The DTC recording timing differs depending on the number of DTC drive cycles.

  ― For a DTC with a drive cycle number 1, only the malfunction determination data is recorded.
  ― For a DTC with a drive cycle number 2, both the malfunction determination and undetermined data is recorded.

Freeze frame data table (mode2, mode12) table

Freeze frame data item | Definition | Unit | Corresponding PID data monitor item | Description
--- | --- | --- | --- | ---
LOAD | Engine load | % | — | Ratio of current intake air amount to wide-open throttle engine operation intake air amount
ECT | Engine coolant temperature | °C | ECT TCM | Engine coolant temperature
RPM | Engine speed | Rpm | RPM TCM | Engine speed
VS | Vehicle speed | KPH | VSS | Vehicle speed input from ABS/DSC HU/CM
TP | Throttle valve position No.1 | % | THOP | TP sensor No.1 value
RUNTM | Time from engine start | hh:mm:ss | — | Time from engine start
VPWR | Module supply voltage | V | VPWR_TCM | PCM power supply voltage