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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 C0051-86: Error Steering Angle Signal Received From Electric Power Steering Control Module >> 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 START STOP UNIT DTCs 
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [START STOP UNIT] .)
No Go to the next step.
2 VERIFY ELECTRIC POWER STEERING (EPS) CONTROL MODULE DTCs 
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [EPS CONTROL MODULE] .)
No Go to the next step.
3 VERIFY IF MALFUNCTIONING LOCATION IS ELECTRIC POWER STEERING (EPS) CONTROL MODULE DEPENDING ON REPEATABILITY 
Yes Replace the electric power steering (EPS) control module, then go to the next step.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
No Go to Step 5.
4 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.
5 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.