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Diagnostic Procedure

WARNING: This page is about a different car, the 2007 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.
DTC B1126 DIAGNOSTIC PROCEDURE TABLE

STEP INSPECTION ACTION
1 INSPECT STEERING LOCK UNIT 
  • Turn the ignition switch to the ON position.
  • Is the DTC displayed?
    • M-MDS: B11263
Yes Replace the steering lock unit and perform the resetting procedure for the steering lock unit.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
(See STEERING LOCK UNIT ID CODE REGISTRATION[ADVANCED KEYLESS SYSTEM] .)
No DTC troubleshooting completed.