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2008 - MX-5 - Body and Accessories

DTC B1093 [ADVANCED KEYLESS SYSTEM]



DTC B1093

Unprogrammed steering lock unit.

DETECTION CONDITION

  • Unprogrammed steering lock unit.

POSSIBLE CAUSE

  • Steering lock unit malfunction

  • Open or short circuit in wiring harness between keyless control module and steering lock unit

  • Keyless control module malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY
  • Disconnect keyless control module connector and steering lock unit connector.

  • Is there continuity between keyless control module terminal 3P and steering lock unit terminal G?

Yes

No

  • Repair the wiring harness between the steering lock unit and keyless control module.

  • Go to next step.

2

INSPECT STEERING LOCK UNIT
  • Turn the ignition switch to the ON position.

  • Is the DTC displayed?

    • M-MDS: B1093

Yes

No

DTC troubleshooting completed.

3

INSPECT KEYLESS CONTROL MODULE
  • Turn the ignition switch to the ON position.

  • Is the DTC displayed?

    • M-MDS: B1093

Yes

Replace the keyless control module and perform the resetting procedure for the advanced keyless system when replacing the keyless control module.

(See KEYLESS CONTROL MODULE REMOVAL/INSTALLATION [ADVANCED KEYLESS SYSTEM].)

(See CARD KEY ID CODE REGISTRATION [ADVANCED KEYLESS SYSTEM])

(See STEERING LOCK UNIT ID CODE REGISTRATION [ADVANCED KEYLESS SYSTEM])

(See KEYLESS CONTROL MODULE CONFIGURATION [ADVANCED KEYLESS SYSTEM])

(See IMMOBILIZER SYSTEM COMPONENT REPLACEMENT/KEY ADDITION AND CLEARING [KEYLESS ENTRY SYSTEM])

(See SECURITY ACCESS PROCEDURE [ADVANCED KEYLESS SYSTEM])

No

DTC troubleshooting completed.




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