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Home >> Mazda >> 2021 >> 3 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Seats >> Symptom Troubleshooting - Seat Warmer System >> Seat Warmer On Seat Back Side Does Not Warm Up >> Diagnostic Procedure

Diagnostic Procedure

SEAT WARMER ON SEAT BACK SIDE DOES NOT WARM UP [SEAT WARMER SYSTEM] DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 VERIFY ALL SYSTEM DTCs
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any DTCs displayed?
Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No Go to the next step.
2 INSPECT SEAT WARMER UNIT FOR MALFUNCTION Yes Go to the next step.
No Repair or replace the malfunctioning location and perform the repair completion verification.
(See FRONT SEAT BACK TRIM REMOVAL/INSTALLATION (US) .)
(See FRONT SEAT CUSHION TRIM REMOVAL/INSTALLATION (US) .)
Repair completion verification VERIFY THAT VEHICLE IS REPAIRED
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Has the malfunction symptom been eliminated?
Yes Complete the symptom troubleshooting. (Explain contents of repair to customer)
No 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.