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Home >> Mazda >> 2007 >> CX-7 Touring, AWD >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic (Advanced Keyless System) >> DTC B2170[Advanced Keyless System] >> Diagnostic procedure

Diagnostic procedure

DTC B2170[ADVANCED KEYLESS SYSTEM] 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 3E and steering lock unit terminal E?
Yes Replace the steering lock unit and perform the resetting procedure for the steering lock unit.
(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION ).
No Repair the wiring harness between the steering lock unit and keyless control module.
2 INSPECT KEYLESS CONTROL MODULE 
  • Turn the ignition switch to the ON position.
  • Is the DTC displayed?
    • M-MDS: B2170
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.