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Home >> Mazda >> 2017 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 35 (On-Board Diagnostic (Adaptive Front Lighting System (AFS) Control Module)) >> DTC U2005-86: Error Signal Received From Pcm >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Action
1 VERIFY PCM DTCs 
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G 2.0)] .)
No Go to the next step.
2 VERIFY IF MALFUNCTIONING LOCATION IS PCM DEPENDING ON REPEATABILITY 
Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0] .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED 
Yes Replace the adaptive front lighting system (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.