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Home >> Kia >> 2017 >> Forte EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Smart Key Unit Diagnosis) >> DTC B1603-00: Can Bus Off >> DTC Information >> DTC Detecting Condition

DTC Information: DTC Detecting Condition

WARNING: This page is about a different car, the 2018 Kia Forte5 and 2018 Kia Forte. However, it is still accessible from the selected car via links, so may be relevant.
Item Detecting Condition Possible Cause
DTC Strategy
  • To check CAN Communication status
  1. The contact state for connector.
  2. Input power for smart key unit. (PIC IMMO)
  3. In the driver door open status (It is not SMK sleep mode), Check the battery short or ground short for CAN High & Low.
  4. Smart key Unit (PIC UNIT)
Enable Conditions
  • At the state of input battery voltage into a SMK
    1. CAN High & Low Battery Short
    2. CAN High & Low Ground Short
Threshold Value
  • CAN High & Low:

    Battery short: the voltage is 12V.

    Ground short: the voltage is 0V.

Diagnostic Time
  • After occurring DTC, it is detected immediately
DTC Erasing Time
  • After solving fault, DTC is deleted immediately