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Home >> Mazda >> 2019 >> 6 Signature >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> On-Board Diagnostics - Adaptive Front Lighting System Control Module >> DTC U0320-09: EPS Control Module Malfunction >> Diagnostic Procedure
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Diagnostic Procedure

DTC U0320:09 ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY EPS CONTROL MODULE DTCs Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [ELECTRIC POWER STEERING (EPS)] .)
No Go to the next step.
2 PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS EPS CONTROL MODULE Yes Replace the EPS control module, then go to the next step.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Replace the AFS control module, then go to the next step.
(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION .)
No Go to the next step.
4 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE (ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE) .)
No DTC troubleshooting completed.