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Home >> Mazda >> 2019 >> 6 Signature >> Repair and Diagnosis >> Drivelines & Axles >> Differentials & Drive Axles >> On-Board Diagnostics - Electronic AWD Control System >> DTC P187B-00: AWD Control Module >> Diagnostic Procedure
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Diagnostic Procedure

DTC P187B:00 (ELECTRONIC AWD CONTROL SYSTEM) DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 INSPECT EACH TIRE DIAMETER Yes Go to the next step.
No Replace with specified tire.
(See WHEEL AND TIRE REMOVAL/INSTALLATION .)
2 VERIFY DTC TROUBLESHOOTING COMPLETED Yes Replace the AWD control module, then go to the next step.
(See .)
No Go to the next step.
3 VERIFY NO DTC IS PRESENT
  • Are any DTCs present?
Yes Go to the applicable DTC inspection.
(See DTC TABLE (ELECTRONIC AWD CONTROL SYSTEM) .)
No DTC troubleshooting completed.