Diagnostic Procedure

WARNING: This page is about a different car, the 2014 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

DTC B13D4 00/P1260 00 DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	VERIFY NUMBER OF PROGRAMMED REMOTE TRANSMITTER Display PID NUM_TRNSMIT using the M-MDS. (See PID/DATA MONITOR INSPECTION [IMMOBILIZER SYSTEM] .) Is the number of programmed remote transmitters less than 2?	Yes	Perform the additional remote transmitter programming, then go to the next step. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING .)
1		No	Go to the next step.
2	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Clear the DTC for the immobilizer system using the M-MDS. (See CLEARING DTC [IMMOBILIZER SYSTEM] .) Retrieve the immobilizer system DTCs using the M-MDS. (See DTC INSPECTION [IMMOBILIZER SYSTEM] .) Is the security indicator light: 21, DTC B13D4:00/P1260:00 displayed?	Yes	Repeat the inspection from Step 1. If the malfunction recurs, replace the start stop unit. (See START STOP UNIT REMOVAL/INSTALLATION .) Go to the next step.
2		No	Go to the next step.
3	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 [IMMOBILIZER SYSTEM] .)
3		No	DTC troubleshooting completed.