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Home >> Mazda >> 2021 >> CX-5 Signature >> Repair and Diagnosis >> External Pages >> Different car >> Section 124 (On-Board Diagnostic - Blind Spot Monitoring Control Module) >> DTC U0515-68; Error Signal Received From Start Stop Unit >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2017 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC PROCEDURE

Step Inspection Action
1 VERIFY START STOP UNIT DTCs Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See 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.
(See DTC TABLE [INSTRUMENT CLUSTER] .)
No Go to the next step.
3 VERIFY IF MALFUNCTIONING LOCATION IS START STOP UNIT DEPENDING ON REPEATABILITY Yes Replace the start stop unit, then go to the next step.
(See START STOP UNIT REMOVAL/INSTALLATION .)
No Go to Step 6.
4 VERIFY IF MALFUNCTIONING LOCATION IS INSTRUMENT CLUSTER DEPENDING ON REPEATABILITY Yes Replace the instrument cluster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION .)
No Go to Step 6.
5 VERIFY THAT REPAIRS HAVE BEEN COMPLETED Yes Replace the blind spot monitoring (BSM) control module (LH), then go to the next step.
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION .)
No Go to the next step.
6 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 [BLIND SPOT MONITORING (BSM) CONTROL MODULE] .)
No DTC troubleshooting completed.