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	INSPECT PURGE SOLENOID VALVE CONNECTOR FOR POOR CONNECTION Switch the ignition to off Disconnect purge solenoid valve connector Inspect for poor connection (such as damaged/pulled-out pins, corrosion) Are there any malfunction?	Yes	Repair or replace suspected part, then go to Step 10.
3		No	Go to the next step
4	INSPECT POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT Switch the ignition to ON (Engine off). Measure voltage between purge solenoid valve terminal A (wiring harness-side) and body ground. Is voltage B+ ?	Yes	Go to the next step.
4		No	Repair or replace suspected part, then go to Step 10.
5	INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY Switch the ignition to ON (Engine off). Measure the voltage between purge solenoid valve control terminal B (wiring harness-side) and body ground. Is voltage B+?	Yes	Repair or replace suspected part, then go to Step 10.
5		No	Go to the next step.
6	INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off Inspect for continuity between purge solenoid valve control terminal B (wiring harness-side) and body ground Is there continuity?	Yes	Repair or replace suspected part, then go to the Step 10.
6		No	Go to the next step.
7	INSPECT PCM CONNECTOR FOR POOR CONNECTION Switch the ignition to off. Disconnect PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace suspected part, then go to Step 10.
7		No	Go to the next step.
8	INSPECT PURGE SOLENOID VALVE CONTROL CIRCUIT FOR OPEN CIRCUIT Switch the ignition to off. Inspect continuity between purge solenoid valve terminal B (wiring harness-side) and PCM terminal 2H (wiring harness-side). Is there continuity?	Yes	Go to the next step.
8		No	Repair or replace suspected part, then go to the Step 10.
9	INSPECT PURGE SOLENOID VALVE Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [MZI-3.7] .) Is there any malfunction?	Yes	Replace purge solenoid valve (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [MZI-3.7] .), then go to Step 10.
9		No	Go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P0443:00 COMPLETED Make sure to reconnect all disconnected connectors. Clear DTC from PCM memory using M-MDS. Perform the "KOEO or KOER self-test" using the M-MDS. (See KOEO/KOER SELF TEST [MZI-3.7] .) Is the PENDING CODE same DTC present?	Yes	Replace PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
10		No	Go to the next step.
11	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [MZI-3.7] ) Are any DTCs present?	Yes	Go to the applicable DTC inspection (See DTC TABLE [MZI-3.7] )
11		No	Troubleshooting completed.