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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 61 (On-Board Diagnostics - Automatic Transaxle System (ET6A-El, ET6AX-El)) >> DTC U0115-00: Communication Error To Pcm (Local Can Between TCM And Pcm) (TCM) (Us) >> Diagnostic Procedure

Diagnostic Procedure

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DTC U0115:00 (TCM, ET6A-EL, ET6AX-EL, US) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
  • Record the freeze frame data/snapshot data.
    NOTE:
    • Recording can be facilitated using the screen capture of the PC function.
- Go to the next step.
2 VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
  • Verify related Service Bulletins, on-line repair information, or Service Information availability.
  • Is any related information available?
Yes Perform repair or diagnosis according to the available information.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 VERIFY PCM DTC
  • Perform the PCM DTC inspection using the M-MDS. (See DTC INSPECTION .)
  • Are any DTCs present?
Yes Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-G (US))] .)
No PCM can be considered the cause.
Repair completion verification 1 VERIFY DTC TROUBLESHOOTING COMPLETED
  • Clear the DTC using the M-MDS. (See CLEARING DTC .)
  • Perform the following procedure to ensure that the DTC has been resolved:
    • Switch the ignition ON (engine off or on).
  • Perform the DTC inspection using the M-MDS. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, perform the diagnosis from Step 1.

Go to the next step.
No Go to the next step.
Repair completion verification 2 VERIFY IF OTHER DTCs DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE (TCM) (US) .)
No DTC troubleshooting completed.