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Home >> Mazda >> 2023 >> MX-5 Miata Club >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> On-Board Diagnostic - Start Stop Unit >> Security Indicator Light: 15, DTC: B13D3-51/P1260-00: Unregistered Remote Transmitter Is Detected [Start Stop Unit] >> Diagnostic Procedure

Diagnostic Procedure

SECURITY INDICATOR LIGHT: 15, DTC: B13D3:51/P1260:00 (START STOP UNIT) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY IF REMOTE TRANSMITTER BROUGHT INTO VEHICLE IS FOR THAT VEHICLE 
  • Does the remote transmitter belong to another vehicle?
Yes Have the correct remote transmitter for the vehicle ready inside the vehicle, then go to Step 3.
No Go to the next step.
2 VERIFY IF MALFUNCTIONING LOCATION IS REMOTE TRANSMITTER DEPENDING ON REPEATABILITY  Yes Replace the malfunctioning remote transmitter, then go to the next step. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED  Yes Repeat the inspection from Step 1.
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.