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Home >> Mazda >> 2023 >> MX-5 Miata Club >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> On-Board Diagnostic - Headlight Auto Leveling Control Module >> DTC U2005-86: Error Signal Received From Pcm [Auto Leveling Control Module] >> Diagnostic Procedure

Diagnostic Procedure

DTC U2005:86 (AUTO LEVELING CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY PCM DTCs  Yes Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE .)
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 auto leveling control module, then go to the next step. (See AUTO LEVELING 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 [AUTO LEVELING CONTROL MODULE] .)
No DTC troubleshooting completed.