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Home >> Mazda >> 2020 >> 6 Signature >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> On-Board Diagnostics - Instrument Cluster >> DTC U0405-00: Error Signal Received From Radar Unit >> Diagnostic Procedure

Diagnostic Procedure

DTC U0405:00 (INSTRUMENT CLUSTER) DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY RADAR UNIT DTCs Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [RADAR UNIT] .)
No Go to the next step.
2 PERFORM DTC INSPECTION AND VERIFY RADAR UNIT MALFUNCTION Yes Replace the radar unit, then go to the next step.
(See RADAR UNIT REMOVAL/INSTALLATION .)
No Go to Step 4.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
4 VERIFY IF OTHER DTCs DISPLAYED
  • Are any other DTCs displayed?
Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE (INSTRUMENT CLUSTER) .)
No DTC troubleshooting completed.