Diagnostic Procedure

WARNING: This page is about a different car, the 2021 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

DTC U2101:00 (FRONT BODY CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN Clear the DTC for the front body control module (FBCM) using the M-MDS. (See CLEARING DTC (FBCM) .) Retrieve the front body control module (FBCM) DTCs using the M-MDS. (See DTC INSPECTION (FBCM) .) Is the same DTC displayed?	Yes	Go to the next step.
1		No	Go to Step 4.
2	PERFORM FRONT BODY CONTROL MODULE (FBCM) CONFIGURATION (USING AS-BUILT DATA) Using the M-MDS, perform the front body control module (FBCM) configuration (using As-Built data). (See FRONT BODY CONTROL MODULE (FBCM) CONFIGURATION (USING AS-BUILT DATA) .) Clear the DTC for the front body control module (FBCM) using the M-MDS. (See CLEARING DTC (FBCM) .) Retrieve the front body control module (FBCM) DTCs using the M-MDS. (See DTC INSPECTION (FBCM) .) Is the same DTC displayed?	Yes	Using the M-MDS, perform the front body control module (FBCM) configuration (using As-Built data) again, then go to the next step. (See FRONT BODY CONTROL MODULE (FBCM) CONFIGURATION (USING AS-BUILT DATA) .)
2		No	Go to Step 4.
3	VERIFY THAT REPAIRS HAVE BEEN COMPLETED Clear the DTC for the front body control module (FBCM) using the M-MDS. (See CLEARING DTC (FBCM) .) Retrieve the front body control module (FBCM) DTCs using the M-MDS. (See DTC INSPECTION (FBCM) .) Is the same DTC displayed?	Yes	Replace the front body control module (FBCM), then go to the next step. (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION .)
3		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 (FBCM) .)
4		No	DTC troubleshooting completed.