Diagnostic procedure

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA HAS BEEN RECORDED Has FREEZE FRAME DATA been recorded?	Yes	Go to the next step
1		No	Record FREEZE FRAME DATA on the repair order, then go to the next step
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related Service Bulletins available?	Yes	Perform repair or diagnosis according to the available Service Bulletins If the vehicle is not repaired, go to the next step.
2		No	Go to the next step
3	VERIFY RELATED PENDING CODE OR STORED DTCs Switch the ignition off then to the ON position (Engine off) Verify related pending code or stored DTCs Are other DTCs present?	Yes	Go to the appropriate DTC troubleshooting (See DTC TABLE [MZI-3.7] )
3		No	Go to the next step
4	INSPECT AIR CLEANER ELEMENT Remove air cleaner element with the engine running. Is the engine speed increased?	Yes	Replace the air cleaner element, then go to Step 9.
4		No	Go to the next step.
5	INSPECT FOR AIR SUCTION AT INTAKE AIR SYSTEM Inspect for air leakage at the following Around connection of dynamic chamber and intake manifold Around connection of intake manifold and cylinder head Is air leakage found?	Yes	Repair or replace the suspected part, then go to Step 9
5		No	Go to the next step.
6	INSPECT THROTTLE BODY PASSAGE Is the throttle body clogged?	Yes	Clean or replace the throttle body passage, then go to Step 9
6		No	Go to the next step
7	INSPECT ENGINE COMPRESSION Inspect the engine compression (See COMPRESSION INSPECTION [MZI-3.7] .) Is the engine compression normal?	Yes	Go to the next step.
7		No	Overhaul the engine, then go to the next step
8	INSPECT FOR RESTRICTION IN EXHAUST SYSTEM AND TWC Is there any restriction?	Yes	Replace malfunctioning part, then go to the next step.
8		No	Go to the next step.
9	VERIFY TROUBLESHOOTING OF DTC P0505:00 HAS BEEN COMPLETED Verify that all disconnected connectors are reconnected Switch the ignition ON (Engine off). Clear the DTC from the PCM memory using the M-MDS. Perform the KOER self-test. Is the PENDING CODE for this DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
9		No	Go to the next step.
10	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE" (See AFTER REPAIR PROCEDURE [MZI-3.7] .) Are any DTC present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZI-3.7] .)
10		No	Troubleshooting completed.