Inspection Procedure 4: No DTC Is Set Even When The AWD/Lock Indicator Lamps Flash: Diagnosis

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MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle Communication Interface
- MB991827: M.U.T.-III USB Cable
- MB991910: M.U.T.-III Main Harness A

Inspection Procedure 1: Scan tool MB991958 cannot communicate with the Electronic Control AWD System. Refer to ECU POWER SUPPLY CIRCUIT SYSTEM CHECK .