Diagnostic Procedure

DTC U0420:00/U0420:82/U0420:83 (DSC HU/CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step	Inspection		Action
1	VERIFY EPS CONTROL MODULE DTC Using the M-MDS, perform the EPS control module DTC inspection. (See DTC INSPECTION [ELECTRIC POWER STEERING (EPS)] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [ELECTRIC POWER STEERING (EPS)] .) DTC troubleshooting completed, then go to the next step.
1		No	Go to the next step.
2	VERIFY DTC TROUBLESHOOTING COMPLETED Using the M-MDS, clear the DTC from the DSC HU/Control Module. (See CLEARING DTC (DSC HU/CONTROL MODULE) .) Using the M-MDS, perform the DSC HU/Control Module DTC inspection. (See DTC INSPECTION (DSC HU/CONTROL MODULE) .) Is the same DTC present?	Yes	Repeat the inspection from Step1. If the malfunction recurs, replace the steering column, then go to the next step. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION .)
2		No	Go to the next step.
3	VERIFY NO DTC IS PRESENT Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE (DSC HU/CONTROL MODULE) .)
3	VERIFY NO DTC IS PRESENT Are any DTCs present?	No	DTC troubleshooting completed.