1. Check that the electronic throttle control relay has no deformation, cracks or other damages. 2. Measure the resistance between electronic throttle control relay terminals.
3. Connect battery positive terminal to terminal No. 3 and battery ground terminal to terminal No. 4, and measure the resistance between the electronic throttle control relay terminals.
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Removal
InstallationDtc u0401 invalid data received from ecm/pcm "a"
DTC DETECTING CONDITION:Defective data from ECM.TROUBLE SYMPTOM:Defective data on CAN communication occurs.STEPCHECKYESNO1.CHECK PERFORMING OF BASIC DIAGNOSTIC PROCEDURE.Was the basic diagnostic procedure performed up to STEP 8- Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC U0401 INV ...