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 next step.
1		No	Record FREEZE FRAME DATA on the repair order, then go to next step
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins availability. Is any related Service Bulletins available?	Yes	Perform repair or diagnosis according to available Service Bulletins. If vehicle is not repaired, go to next step.
2		No	Go to next step.
3	VERIFY RELATED PENDING CODE OR STORED DTC Verify the related PENDING CODE or stored DTCs. Are other DTCs present?	Yes	Go to appropriate DTC inspection. (See DTC TABLE [MZI-3.7] .)
3		No	Go to next step
4	INSPECT AIR SUCTIONING BETWEEN MAF SENSOR AND TP SENSOR Inspect for major leaks, cracks and openings between MAF sensor and throttle body Are there any malfunction?	Yes	Repair or replace the malfunctioning part, then go to Step 10.
4		No	Go to next step.
5	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 the malfunctioning part, then go to Step 10.
5		No	Go to next step.
6	INSPECT MAF SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY Switch the ignition to ON (Engine off) Measure voltage between the following terminals: MAF sensor terminal C (wiring harness-side) and body ground MAF sensor terminal D (wiring harness-side) and body ground Are there voltage B+ ?	Yes	Repair or replace the malfunctioning part, then go to Step 10
6		No	Go to next step.
7	INSPECT MAF SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND Switch the ignition to off. Disconnect the MAF/IAT sensor and PCM connector. Inspect for continuity between the following circuits. MAF sensor terminal C (wiring harness-side) and body ground MAF sensor terminal D (wiring harness-side) and body ground Are there continuity?	Yes	Repair or replace the malfunctioning part, then go to Step 10.
7		No	Go to next step.
8	INSPECT PCM 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 the malfunctioning part, then go to Step 10
8		No	Go to next step.
9	INSPECT MAF SENSOR CIRCUIT FOR OPEN CIRCUIT Switch the ignition to off. Disconnect the PCM connector Disconnect the MAF/IAT sensor connector Inspect for continuity between the following terminals: 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.
9		No	Repair or replace suspected part, then go to the next step.
10	VERIFY TROUBLESHOOTING OF DTC P0104:00 HAS BEEN COMPLETED Verify that all disconnected connectors reconnected. Clear DTC from memory using M-MDS Start the engine. Perform the "KOEO/KOER self-test" (See KOEO/KOER SELF TEST [MZI-3.7] ) Is same DTC present?	Yes	Replace the PCM, then go to next step (See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
10		No	Go to 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.