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Home >> Mazda >> 2021 >> CX-3 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (On-Board Diagnostic - Blind Spot Monitoring Control Module) >> DTC U0515-68: Error Signal Received From Start Stop Unit >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Action
1 VERIFY START STOP UNIT DTCs  Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(Refer to DTC TABLE [START STOP UNIT] .)
No Go to the next step.
2 VERIFY INSTRUMENT CLUSTER DTCs  Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(Refer to DTC TABLE [INSTRUMENT CLUSTER] .)
No Go to the next step.
3 VERIFY THAT REPAIRS HAVE BEEN COMPLETED  Yes Replace the blind spot monitoring (BSM) control module (LH), then go to the next step.
(Refer to BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION .)
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.
(Refer to DTC TABLE [BLIND SPOT MONITORING (BSM) CONTROL MODULE] .)
No DTC troubleshooting completed.