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2008 - MX-5 - Body and Accessories

DTC B1133 [ADVANCED KEYLESS SYSTEM]



DTC B1133

Keyless antenna (RF)

DETECTION CONDITION

Keyless antenna dose not operated.

POSSIBLE CAUSE

  • Keyless antenna (RF) malfunction

  • Open or short circuit in wiring harness between keyless control module and keyless antenna

  • Keyless control module malfunction


Diagnostic procedure

STEP

INSPECTION

ACTION

1

INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY
  • Disconnect keyless control module connector and keyless antenna (RF) connector.

  • Inspect the continuity between the following connector terminals.

    • keyless control module: 2A—keyless antenna: A

    • keyless control module: 2B—keyless antenna: B

  • Is there continuity?

Yes

No

  • Repair the wiring harness between the keyless antenna (RF) and keyless control module.

  • Go to next step.

2

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

  • Is the DTC displayed?

    • M-MDS: B1133

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 [ADVANCED KEYLESS SYSTEM])

(See SECURITY ACCESS PROCEDURE [ADVANCED KEYLESS SYSTEM])

No

DTC troubleshooting completed.




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