DTC U0420:00 [DSC HU/CM]

id040262861800

DTC	U0420:00	Signal error from EPS control module
DETECTION CONDITION		•  Error detected in signal from EPS control module via CAN communication
FAIL-SAFE FUNCTION		Refer to DTC TABLE. (See DTC TABLE [DSC HU/CM].)
POSSIBLE CAUSE		•  EPS control module malfunction
SYSTEM WIRING DIAGRAM		—

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 [EPS CONTROL MODULE].) •  Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [EPS CONTROL MODULE].) DTC troubleshooting completed, then go to the next step.
		No	Go to the next step.
2	VERIFY DTC TROUBLESHOOTING COMPLETED •  Using the M-MDS, clear the DTC from the DSC HU/CM. (See CLEARING DTC [DSC HU/CM].) •  Using the M-MDS, perform the DSC HU/CM DTC inspection. (See DTC INSPECTION [DSC HU/CM].) •  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.)
		No	Go to the next step.
3	VERIFY NO DTC IS PRESENT •  Are any DTCs present?	Yes	Go to applicable DTC inspection. (See DTC TABLE [DSC HU/CM].)
		No	DTC troubleshooting completed.