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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 47 (On-Board Diagnostic - Standard Deployment Control System) >> DTC U2005-68: Pcm Communication Error (Vehicle Speed Signal) >> 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 VERIFY SAS CONTROL MODULE DTCs AGAIN 
Yes Go to the next step.
No Go to Step 5.
2 VERIFY PCM DTCs 
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to the next step.
3 PERFORM DTC INSPECTION AND VERIFY IF MALFUNCTIONING PART IS PCM 
Yes Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
No Go to Step 5.
4 VERIFY THAT REPAIRS HAVE BEEN COMPLETED 
Yes Replace the SAS control module, then go to the next step. (See SAS CONTROL MODULE REMOVAL/INSTALLATION [STANDARD DEPLOYMENT CONTROL SYSTEM] .)
No Go to the next step.
5 VERIFY IF OTHER DTCs DISPLAYED 
  • Are any other DTCs displayed?
Yes Repair the malfunctioning part according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.