On-Board Diagnostic Function

AUTOMATIC TRANSMISSION ON-BOARD DIAGNOSTIC FUNCTION [SJ6A-EL]

DTC Reading Procedure

1. Perform necessary vehicle preparation and visual inspection.

2. Connect the M-MDS to the DLC-2.






3. After the vehicle is identified, select the following items from the initial screen of the M-MDS.

- When using the IDS (laptop PC)

- Select "Self Test".
- Select "Modules".
- Select "TCM".

- When using the PDS (Pocket PC)

- Select "Module Tests".
- Select "TCM".
- Select "Self Test".

NOTE:
- Freeze frame data appears at the top of the help screen when the displayed DTC is selected.
- 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

NOTE:
- Refer to PID monitor table for confirm the engine control system operation status while the PCM does not store the DTC.
- Freeze frame data items are not displayed, according to detected DTC.





4. Verify the DTC according to the directions on the screen.

- If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection.

5. After completion of repairs, clear all DTCs stored in the TCM. After Repair Procedure