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Home >> Hyundai >> 2019 >> Veloster N >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC U0164-00: Lost Communication With HVAC Control Module (FATC CAN Time-Out) (C-CAN) >> Component Inspection >> CAN Signal Line
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CAN Signal Line

Check Item Specifications Prerequisite Condition Terminal (+) Terminal (-)
CAN Signal Line - Resistance Approx. 110~130Ω
  1. Ignition SW 'OFF'
High signal terminal of ECM (Component Side) Low signal terminal of ECM (Component Side)
  1. Is the measured resistance within specification?

    YES 

    • Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification Of Repair " procedure.

    NO 

    • Check ECM for contamination, deterioration, or damage. Substitute with a known-good ECM and check for proper operation. If the problem is corrected, replace ECM and then go to "Verification Of Repair " procedure.