Diagnostic Procedure
WARNING: This page is about a different car, the 2021 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.
DTC U250A:86 [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE] DIAGNOSTIC PROCEDURE
| Step | Inspection | Results | Action |
|---|---|---|---|
| 1 | VERIFY LIGHT CONTROL MODULE (LH) RELATED DTCs
|
Yes | Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [BODY CONTROL MODULE (BCM) (US)] .) |
| No | Go to the next step. | ||
| 2 | INSPECT LIGHT CONTROL MODULE (LH) FOR MALFUNCTION DEPENDING ON REPEATABILITY
|
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 front combination light (LH) and perform the repair completion verification. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION .) |
| No | Go to repair completion verification 2. | ||
| Repair completion verification 1 | VERIFY THAT VEHICLE IS REPAIRED
|
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, perform the diagnosis from Step 1.
|
| No | Go to the next step. | ||
| Repair completion verification 2 | VERIFY IF OTHER DTC IS DISPLAYED
|
Yes | Repair the malfunctioning location according to the applicable DTC troubleshooting. |
| No | DTC troubleshooting completed. |