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Diagnostic Procedure

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY PCM DTCs Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G 2.0, SKYACTIV-G 2.5)] .)
No Go to the next step.
2 VERIFY IF MALFUNCTIONING LOCATION IS PCM DEPENDING ON REPEATABILITY
  • Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT] .)
  • With the programmed remote transmitter in the vehicle, switch the ignition ON (engine off).
  • Perform the following work 5 times or more.
    • Depress the clutch pedal and release it. (MTX)
      • Operate the selector lever to other than P and N position from P or N position and hold for 1 s or more. (ATX)
  • Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT] .)
  • Is the same DTC displayed?
 Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED
  • Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT] .)
  • With the programmed remote transmitter in the vehicle, switch the ignition ON (engine off).
  • Perform the following work 5 times or more.
    • Depress the clutch pedal and release it. (MTX)
      • Operate the selector lever to other than P and N position from P or N position and hold for 1 s or more. (ATX)
  • Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT] .)
  • Is the same DTC displayed?
 Yes Replace the start stop unit, then go to the next step.
(See START STOP UNIT REMOVAL/INSTALLATION .)
No Go to the next step.
4 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [START STOP UNIT] .)
No DTC troubleshooting completed.
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