CAN Communication Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

CAN communication line inspection
1. IG KEY OFF.
2. Disconnect HCU connector and ESC connector.
3. Measure the resistance between CAN-HIGH terminal of HCU harness connector and CAN-HIGH terminal of ESC harness connector.
4. Measure the resistance between CAN-LOW terminal of HCU harness connector and CAN-LOW terminal of ESC harness connector.
  Specification: Below 1Ω
  
  Fig 1: Measuring Resistance Between HCU And ESC Harness Connector
  Courtesy of KIA MOTORS AMERICA, INC.
  
  Fig 2: HCU And ESC Connector Terminals End View
  Courtesy of KIA MOTORS AMERICA, INC.
5. Is the measured resistance within specification?
  YES
  - Check Each Module connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  - Substitute with a known - good ESC and check for proper operation. If the problem is corrected, replace ESC and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Check for open/short in harness.
  - Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.