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 RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT DRIVE BELT CONDITION Verify that the drive belt auto tensioner indicator mark does not exceed limit Is the front drive belt normal?	Yes	Go to the next step.
2		No	Replace or adjust drive belt, then go to Step 8. (See DRIVE BELT REMOVAL/INSTALLATION [L5] .)
3	INSPECT GENERATOR CONNECTOR CONDITION Switch the ignition to off Disconnect the generator connector Inspect for poor connection (such as damaged/pulled-out pins, corrosion) Is there any malfunction?	Yes	Repair or replace the terminal and/or connector, then go to Step 8
3		No	Go to the next step.
4	INSPECT PCM CONNECTOR CONDITION Disconnect the PCM connector Inspect for poor connection (such as damaged/pulled-out pins, corrosion) Is there any malfunction?	Yes	Repair or replace the terminal and/or connector, then go to Step 8.
4		No	Go to the next step.
5	INSPECT GENERATOR CIRCUIT FOR SHORT TO GROUND Inspect for continuity between the following terminals and body ground Generator terminal D (wiring harness-side) Generator terminal P (wiring harness-side) Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 8.
5		No	Go to the next step
6	INSPECT GENERATOR Inspect the generator (See GENERATOR INSPECTION [L5] .) Is there any malfunction?	Yes	Replace the generator, then go to Step 8. (See GENERATOR REMOVAL/INSTALLATION [L5] .)
6		No	Go to the next step
7	INSPECT GENERATOR CIRCUIT FOR OPEN CIRCUIT Inspect for continuity between the following terminals. Generator terminal D (wiring harness-side) and PCM terminal 2AA (wiring harness-side) Generator terminal P (wiring harness-side) and PCM terminal 2AF (wiring harness-side) Is there continuity?	Yes	Go to the next step.
7		No	Repair or replace the wiring harness for a possible open circuit, then go to the next step.
8	VERIFY DTC TROUBLESHOOTING COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS Perform the KOER self test (See KOEO/KOER SELF TEST [L5] .) Is the same DTC present?	Yes	Replace the PCM, then go to the next step (See PCM REMOVAL/INSTALLATION [L5] .)
8		No	Go to the next step
9	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE" (See AFTER REPAIR PROCEDURE [L5] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [L5] .)
9		No	DTC troubleshooting completed.