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 | RESULTS | ACTION |
|---|---|---|---|
| 1 | Connect the M-MDS to the DLC-2 Access ECT PID Start and warm up the engine to normal operating temperature Is ECT PID between 82-112°C {180-234°F}? |
Yes | Go to the next step. |
| No | ECT PID is higher than 112°C {234°F}: Go to symptom troubleshooting "No 17 Cooling system concerns - Overheating" (See NO. 17 COOLING SYSTEM CONCERNS-OVERHEATING [L5] ) ECT PID is less than 82°C {180°F}: Go to symptom troubleshooting "No 18 Cooling system concerns - Runs cold". (See NO. 18 COOLING SYSTEM CONCERNS-RUNS COLD [L5] ) |
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| 2 | Connect the M-MDS to the DLC-2 Switch the ignition to ON (Engine off) Retrieve any DTCs Are there any DTCs displayed? |
Yes | DTC is displayed: Go to the appropriate DTC inspection. (See DTC TABLE [L5] .) |
| No | No DTC is displayed: Go to the next step |
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| 3 | Connect the M-MDS to the DLC-2 Access the ACCS, COLP, CPP/PNP, PSP and TR PIDs Monitor each PID (See PCM INSPECTION [L5] .) Are PID values normal? |
Yes | Go to the next step. |
| No | ACCS PID is not specified:
Inspect the A/C switch, refrigerant pressure switch and fan switch COLP PID is not specified: Inspect the refrigerant pressure switch (middle pressure) CPP PID is not specified: Inspect the clutch switch (MTX) CPP/PNP PID: Inspect the neutral switch (MTX). PSP PID: Inspect PSP switch TR PID: TR switch (ATX) |
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| 4 | Is there air leakage felt or heard at the intake air system components while racing the engine to higher speed? | Yes | Repair or replace parts if necessary. |
| No | Inspect the following:
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| 5 | Verify test results
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