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DTC P1285, P1299 [MZI-3.7] DTC P1285, P1299 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES DIAGNOSTIC PROCEDURE DTC P1285, P1299 (MZI-3.7) DIAGNOSTIC PROCEDURE Clear the DTC from the PCM Start the engine and run it at idle. Retrieve DTCs using the M-MDS. Is the PENDING CODE for this No Go to the next step. 7 VERIFY AFTER REPAIR Perform "AFTER REPAIR Are any DTC present? Yes Go to the applicable DTC inspection. (See DTC No Troubleshooting completed. DTC P1285 P1285: Cylinder head over temperature condition DCT P1299 P1299: Cylinder head over temperature protection active DETECTION CONDITION P1285 indicates that an engine overheat condition was sensed by the P1299 indicates that an engine overheat condition was detected by the Fail-safe function was activated to cool the engine. POSSIBLE CAUSE Low engine coolant level Base engine malfunction Engine cooling system malfunction CHT sensor malfunction STEP INSPECTION ACTION 1 VERIFY FREEZE FRAME DATA HAS BEEN Has FREEZE FRAME DATA been recorded? Yes Go to the next step. No Record FREEZE FRAME DATA on the repair order, then go to the next step. 2 VERIFY RELATED REPAIR INFORMATION Verify related Service Bulletins and/or on-line Yes Perform repair or diagnosis according If the vehicle is not repaired, go
2008 Mazda CX-9 Grand Touring 2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
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