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Diagnostic procedure

DTC U0420:00 (DSC HU/CM) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT FOR EPS CONTROL MODULE MALFUNCTION  Yes Go to applicable DTC inspection. (See DTC TABLE [ELECTRIC POWER STEERING (EPS) CONTROL MODULE] .)
No Go to the next step.
2 VERIFY THAT THE SAME DTC IS NOT PRESENT 
  • Using the M-MDS, clear the DTC from the DSC HU/CM. (See CLEARING DTC .)
  • Using the M-MDS, perform the DSC HU/CM DTC inspection. (See DTC INSPECTION .)
  • Are the same DTCs present?
 Yes Repeat the inspection from Step 1.
If the malfunction recurs, replace the EPS control module, then go to the next step. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
No Go to the next step.
3 VERIFY THAT NO OTHER DTCS ARE PRESENT 
  • Are any other DTCs output?
 Yes Go to the applicable DTC inspection. (See DTC TABLE .)
No DTC troubleshooting completed.
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