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Home >> Mazda >> 2024 >> CX-90 PHEV Preferred >> Repair and Diagnosis >> External Pages >> Different car >> Section 79 (On-Board Diagnostic - Adaptive Front Lighting System Control Module) >> DTC U2300-56: Configuration Data Unmatched With Body Control Module (BCM) [Adaptive Front Lighting System (AFS) Control Module] >> Troubleshooting Diagnostic Procedure
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Troubleshooting Diagnostic Procedure

WARNING: This page is about a different car, the 2024 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
U2300: 56 (ALH/AFS/ALV) TROUBLESHOOTING DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 PURPOSE: VERIFY IF THERE ARE DEFICIENCIES IN PREVIOUS MODULE REPLACEMENT PROCEDURE 
  • Verify the contents of the previous module replacement procedure.
    NOTE:
    • If a module other than for this vehicle is installed, this diagnostic procedure cannot be used to resolve the problem.
  • Is the correct module installed?
 Yes Go to the next step.
No Install the correct module and perform repair completion verification 1.
2 PURPOSE: RECORD CONFIGURATION DATA 
  • Switch the ignition off/main power OFF.
  • Switch the ignition ON (engine off or on)/main power ON (READY off or on) and wait for 1 min or more.
  • Switch the ignition off/main power OFF and wait for 30 s or more.
  • Switch the ignition ON (engine off or on)/main power ON (READY off or on).
  • Clear the DTC recorded in the memory. (see CLEARING DTC .)
  • Perform the DTC inspection for the auto leveling control module/adaptive front lighting system (AFS) control module/adaptive LED headlights control module. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Go to the next step.
No Perform the repair completion verification 2.
3 PURPOSE: VERIFY BODY CONTROL MODULE (BCM) DTC 
  • Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION .)
  • Are any DTCs displayed?
 Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [BCM] .)
No Go to the next step.
4 PURPOSE: INSPECT BODY CONTROL MODULE (BCM) FOR MALFUNCTION 
  • Perform the quick check. (See DTC INSPECTION .)
  • Are the following DTCs stored in other multiple modules?
    • U2300: 54
    • U2300: 55
    • U2300: 56
    • U2300: 64
 Yes Replace the body control module (BCM) and perform the repair completion verification 1.
(Refer to applicable BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION in the service information.)
No Go to the next step.
Repair completion verification 1 PURPOSE: VERIFY THAT VEHICLE IS REPAIRED 
  • Install/connect the part removed/disconnected during the troubleshooting procedure.
  • Clear the DTC recorded in the memory. (see CLEARING DTC .)
  • Perform the DTC inspection for the auto leveling control module/adaptive front lighting system (AFS) control module/adaptive LED headlights control module. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See MALFUNCTION DIAGNOSIS FLOW [CONTROLLER AREA NETWORK (CAN)] .)
If the CAN communication is normal, perform the diagnosis from Step 1.
No Go to the next step.
Repair completion verification 2 PURPOSE: VERIFY IF OTHER DTCs DISPLAYED 
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
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