Mazda 6 Service Manual: Dtc confirmation procedure

Diagnostic monitoring test results

The purpose of this test mode is to confirm the result of OBD monitor diagnostic test results. The result values stored when particular monitor is completed are displayed. If the monitor is not ...

Koeo/koer self-test

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. ...

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Mazda 6 Service Manual: No. 2 all on-board diagnostic functions inoperative
When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, check to make sure connectors, terminals and wir ...

Mazda 6 Service Manual: Pcv valve inspection
1. Disconnect the negative battery cable. 2. Remove the intake maniforld.(see INTAKE-AIR SYSTEM REMOVAL/INSTALLATION.) 3. Remove the PCV valve. 4. Blow through the valve and verify that air flows as specified. If not as specified, replace the PCV valve. Specification ...