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Home >> Mazda >> 2022 >> 3 Base >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> On-Board Diagnostic - Adaptive Front Lighting System Control Module >> DTC U3000-42: Adaptive Front Lighting System (AFS) Control Module Internal Malfunction [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE] >> Diagnostic Procedure

Diagnostic Procedure

DTC U3000:42 (ADAPTIVE FRONT LIGHTING SYSTEM CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE FOR MALFUNCTION 
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the adaptive front lighting system (AFS) 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 CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, replace the adaptive front lighting system (AFS) control module and perform the repair completion verification.
(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION .)
No Go to the next step.
Repair completion verification VERIFY IF OTHER DTC IS DISPLAYED 
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
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