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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 34 (On-Board Diagnostic - Electric Power Steering) >> DTC U0338-00; U0515-00: Can System Communication Error >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Action
1 INSPECT FOR THE START STOP UNIT MALFUNCTION 
Yes Go to applicable DTC inspection.
(See DTC TABLE [START STOP UNIT] .)
DTC troubleshooting completed, then go to the next step.
No Go to the next step.
2 VERIFY DTC TROUBLESHOOTING COMPLETED 
Yes Replace the start stop unit.
(See START STOP UNIT REMOVAL/INSTALLATION .)
No DTC troubleshooting completed.