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 POOR CONNECTION OF CHT SENSOR CONNECTOR Switch the ignition off Disconnect CHT 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 8
3		No	Go to the next step.
4	INSPECT CHT SENSOR SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY Switch the ignition ON (Engine off). Measure the voltage between CHT sensor terminal B (wiring harness-side) and body ground. Is the voltage B+ ?	Yes	Repair or replace suspected part, then go to Step 8.
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR FOR POOR CONNECTION Disconnect the 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 8.
5		No	Go to the next step.
6	INSPECT CHT SENSOR CIRCUIT FOR OPEN CIRCUIT Inspect the continuity between the following circuit: CHT sensor terminal A (wiring harness-side) and PCM terminal 2G (wiring harness-side). CHT sensor terminal B (wiring harness-side) and PCM terminal 2AV (wiring harness-side) Are there continuity?	Yes	Go to the next step.
6		No	Repair or replace suspected part, then go to Step 8.
7	INSPECT CHT SENSOR Inspect the CHT sensor. (See CYLINDER HEAD TEMPERATURE (CHT) SENSOR INSPECTION [MZI-3.7] .) Is there any malfunction?	Yes	Replace the CHT sensor, then go to the next step.
7		No	Go to the next step.
8	VERIFY TROUBLESHOOTING OF DTC P1289:00 HAS BEEN COMPLETED Verify that all disconnected connectors reconnected. Clear the DTC from the PCM memory using the 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 for the DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [MZI-3.7] .)
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE Perform "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] .)
9		No	Troubleshooting completed.