Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Step	Inspection		Action
1	PERFORM START STOP UNIT CONFIGURATION Perform the start stop unit configuration using the M-MDS. (See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA) .) Clear DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT] .) Perform the DTC inspection for the start stop unit using the M-MDS. (See DTC INSPECTION [START STOP UNIT] .) Is DTC U2100:00 displayed?	Yes	Perform the start stop unit configuration again, then go to the next step. (See START STOP UNIT CONFIGURATION (USING AS-BUILT DATA) .)
1		No	Go to Step 3.
2	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Clear DTC for the start stop unit using the M-MDS. (See CLEARING DTC [START STOP UNIT] .) Perform the DTC inspection for the start stop unit using the M-MDS. (See DTC INSPECTION [START STOP UNIT] .) Is DTC U2100:00 displayed?	Yes	Replace the start stop unit, then go to the next step. (See START STOP UNIT REMOVAL/INSTALLATION .)
2		No	Go to the next step.
3	VERIFY IF OTHER DTCs DISPLAYED Are any other DTCs displayed?	Yes	Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [START STOP UNIT] .)
3		No	DTC troubleshooting completed.