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 MAF SENSOR CONNECTOR FOR POOR CONNECTION Switch the ignition to off. Disconnect the MAF/IAT sensor 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 the voltage between MAF sensor terminal A (wiring harness-side) and body ground. Is the voltage B+ ?	Yes	Go to the next step.
4		No	Repair or replace suspected part, then go to Step 10.
5	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). Are there any malfunction?	Yes	Repair or replace suspected part, then go to Step 10.
5		No	Go to the next step
6	INSPECT MAF SENSOR SIGNAL CIRCUIT FOR OPEN CIRCUIT Remove PCM with PCM connector connected. Inspect for continuity between the following circuits. MAF sensor terminal C (wiring harness-side) and PCM terminal 1AN (wiring harness-side) MAF sensor terminal D (wiring harness-side) and PCM terminal 1AR (wiring harness-side) Are there continuity?	Yes	Go to the next step
6		No	Repair or replace suspected part, then go to Step 10.
7	INSPECT MAF SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the MAF/IAT sensor and PCM connector Inspect continuity between following circuits MAF sensor connector terminal D (wiring harness-side) and body ground Are there continuity?	Yes	Repair or replace suspected part, then go to the Step 10
7		No	Go to the next step
8	INSPECT MAF SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT Inspect continuity between MAF sensor terminal B (wiring harness-side) and body ground. Are there continuity?	Yes	Go to the next step.
8		No	Repair or replace suspected part, then go to Step 10.
9	INSPECT THE MAF SENSOR Inspect the MAF sensor (See MASS AIR FLOW (MAF) SENSOR INSPECTION [MZI-3.7] .) Are there any malfunction?	Yes	Replace the MAF/IAT sensor, then go to the next step. (See MASS AIR FLOW (MAF)/INTAKE AIR TEMPERATURE (IAT) SENSOR REMOVAL/INSTALLATION [MZI-3.7] .)
9		No	Go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P0102:00 HAS BEEN COMPLETED Verify that all disconnected connectors reconnected Switch the ignition to ON (Engine off). Clear the DTC from the PCM memory using the M-MDS. Start engine and warm it up completely Is 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 "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] .)
11		No	Troubleshooting completed.