C-CAN Communication line Inspection

WARNING: This page is about a different car, the 2016 Hyundai Sonata and 2015 Hyundai Sonata. However, it is still accessible from the selected car via links, so may be relevant.

Check short to ground in CAN communication line
1. Ignition OFF.
2. Connect all related module connectors.
3. Measure resistance between C-CAN high terminal of EPB (& ESP) Module harness connector and chassis ground.
4. Measure resistance between C-CAN low terminal of EPB (& ESP) Module harness connector and chassis ground.
  Specification: Infinity Ω
Check short to battery in CAN communication line
1. Ignition OFF.
2. Connect all related module connectors.
3. Ignition ON
4. Measure voltage between C-CAN high terminal of EPB (& ESP) Module harness connector and chassis ground.
5. Measure voltage between C-CAN low terminal of EPB (& ESP) Module harness connector and chassis ground.
  Specification: Below 5V
Check Open in CAN communication line
1. IG KEY OFF.
2. Disconnect EPB (& ESP) Module connector and TCM (PCM) connector.
3. Measure the resistance between CAN-HIGH terminal of EPB (& ESP) Module harness connector and C-CAN-HIGH terminal of TCM (PCM) harness connector.
4. Measure the resistance between CAN-LOW terminal of EPB (& ESP) Module harness connector and C-CAN-LOW terminal of TCM (PCM) harness connector.
  Specification: Below 1Ω
5. Is the measured value within specification?
  YES
  - Check TCM, EPB 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.
  NO
  - Check for open/short in harness.
  - Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.