LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 2021 >> 6 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 64 (On-Board Diagnostic - Front Body Control Module (FBCM)) >> DTC U3000-56: Front Body Control Module (FBCM) Configuration Error >> Diagnostic Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Procedure

WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC U3000:56 (FRONT BODY CONTROL MODULE (FBCM)) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN Yes Go to the next step.
No Go to Step 4.
2 PERFORM FRONT BODY CONTROL MODULE (FBCM) CONFIGURATION (USING AS-BUILT DATA) 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) .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
Go to the next step.
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 (FRONT BODY CONTROL MODULE (FBCM)) .)
No DTC troubleshooting completed.