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Diagnostic procedure

DTC B112A[ADVANCED KEYLESS SYSTEM] DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT COMMUNICATION CIRCUIT FOR CONTINUITY 
  • Disconnect keyless control module connector and keyless antenna (interior, front) connector.
  • Inspect the continuity between the following connector terminals.
    • keyless control module: 10-keyless antenna: A
    • keyless control module: 1P-keyless antenna: B
  • Is there continuity?
 Yes Replace keyless antenna (interior, front).
(See KEYLESS ANTENNA REMOVAL/INSTALLATION[ADVANCED KEYLESS SYSTEM] .) Go to next step.
No Repair the wiring harness between the keyless antenna (interior, front) 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: B112A
 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] ).
No DTC troubleshooting completed.
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