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Home >> Mazda >> 2022 >> CX-9 Signature >> Repair and Diagnosis >> Body & Frame >> Door Locks >> On-Board Diagnostic - Rear One-Touch Walk-In Control Module >> DTC U0447-86: Error Signal Received [Rear One-Touch Walk-In Control Module] >> Diagnostic Procedure
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Diagnostic Procedure

DTC U0447:86 [REAR ONE-TOUCH WALK-IN CONTROL MODULE] DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY REAR ONE-TOUCH WALK-IN CONTROL MODULE DTCs Yes Go to the next step.
No Go to Step 5.
2 VERIFY INSTRUMENT CLUSTER DTCs Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [INSTRUMENT CLUSTER] .)
No Go to the next step.
3 INSPECT INSTRUMENT CLUSTER Yes Go to the next step.
No Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
4 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Repeat the inspection from Step 1.
  • If the malfunction recurs, replace the rear one-touch walk-in control module.

(See REAR ONE-TOUCH WALK-IN CONTROL MODULE REMOVAL/INSTALLATION .)
Go to the next step.
No Go to the next step.
5 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 [REAR ONE-TOUCH WALK-IN CONTROL MODULE] .)
No DTC troubleshooting completed.