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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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DTC B13D3:97 [START STOP UNIT]

Description	Remote transmitter registration work not completed
Detection condition	Start stop unit detects that the registration of a remote transmitter has not been completed.
Fail-safe	Not applicable
Possible cause	Immobilizer system related DTCs are stored. Remote transmitter registration not completed correctly. Start stop unit configuration error Start stop unit malfunction
System wiring diagram	Not applicable

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY IMMOBILIZER SYSTEM RELATED DTCs Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) Are immobilizer system related DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [START STOP UNIT].)
		No	Go to the next step.
2	REGISTER REMOTE TRANSMITTER Register the remote transmitter. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING.) Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT].) Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) Is the same DTC displayed?	Yes	Go to the next step.
		No	Go to Step 5.
3	PERFORM START STOP UNIT CONFIGURATION (USING AS-BUILT DATA) Using the M-MDS, perform the start stop unit configuration (using As-Built data). (See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA).) Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT].) Retrieve the start stop unit DTCs using the M-MDS. (See DTC INSPECTION [START STOP UNIT].) Is the same DTC displayed?	Yes	Using the M-MDS, perform the start stop unit configuration (using As-Built data) again, then go to the next step. (See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA).)
		No	Go to Step 5.
4	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Clear the DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT].) 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.
5	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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