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Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 90 (On-Board Diagnostic - Body Control Module (BCM) (3 Of 3)) >> DTC U3000-88: Body Control Module (BCM) Internal Malfunction (BCM) >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
DTC U3000:88 (BCM) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT BODY CONTROL MODULE (BCM) FOR MALFUNCTION
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the body control module (BCM). (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW (US) .)
If the CAN communication is normal, replace the body control module (BCM) and perform the repair completion verification.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION (US) .)
No Go to the next step.
Repair completion verification VERIFY IF OTHER DTC IS DISPLAYED
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any other DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
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