1. Connect WDS or equivalent to the vehicle DLC-2 16-pin connector located as shown in the figure.

2. Perform KOEO/KOER self-test.
After repair procedureMazda 6 Service Manual: Troubleshooting procedure
Basic flow of troubleshooting
DTC troubleshooting flow (on-board diagnostic)
Diagnostic trouble codes (DTCs) are important hints for repairing
malfunctions that are difficult to simulate.
Perform the specific DTC diagnostic inspection to quickly and accurately
diagnose the malfunction.
The ...
Mazda 6 Service Manual: Foreword
When the customer reports a vehicle malfunction, check the malfunction
indicator lamp (MIL), HOLD indicator light flashing, and PCM memory for
diagnostic trouble code (DTC), then diagnose the malfunction according to
following flowchart.
- If the DTC exists, diagnose the applicable ...