CAN Communication Line Inspection

Short to line Inspection
1. IG key "OFF".
2. Disconnect ISP ECU and TCU connector.
3. Measure resistance between terminal of IAP ECU-CAN HIGH and terminal of TCU-HIGH signal harness connector
4. Measure resistance between terminal of IAP ECU-CAN LOW and terminal of TCU-LOW signal harness connector
  Specification: Below approx. 1Ω
  
  Fig 1: Measuring Resistance Between Terminal Of IAP ECU-CAN High And Terminal Of TCU-HIGH Signal Harness Connector
  Courtesy of HYUNDAI MOTOR AMERICA
5. Is the measured resistance normally?
  YES
  - Go to the "COMPONENT INSPECTION " procedure.
  NO
  - Check short to CAN line between IAP ECU and TCU.
  - Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.