Check Open In CAN Communication Line
WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
- IG KEY OFF.
- Disconnect BCM (TPMS Module Integrated) connector and ABS/ESC (ESP) connector.
- Measure the resistance between CAN-HIGH terminal of BCM (TPMS ECU Integrated) harness connector and CAN-HIGH terminal of ABS/ESC (ESP) harness connector.
- Measure the resistance between CAN-LOW terminal of BCM (TPMS ECU Integrated) harness connector and CAN-LOW terminal of ABS/ESC (ESP) harness connector.
Specification: below 1Ω
Item Normal Value Prerequisite Condition (+) Probe (-) Probe Check short to ground in CAN communication line (Ω) infinity Ω - Ignition switch: OFF
- Connect all related module connectors.
BCM's (TPMS Module Integrated) CAN "HIGH" terminal chassis ground. BCM's (TPMS Module Integrated) CAN "LOW" terminal Check Open in CAN communication line. (Ω) below 1 Ω - Ignition switch: OFF
- BCM (TPMS Module Integrated) connector: Disconnected
- ABS/ESC (ESP) connector: Disconnected
BCM's (TPMS Module Integrated) CAN "HIGH" terminal ABS/ESC (ESP)'s CAN-"HIGH" terminal BCM's (TPMS Module Integrated) CAN "LOW" terminal ABS/ESC (ESP)'s CAN-"LOW" terminal - Is the measured value within specification?
YES
- Check ECM, BCM (TPMS Module Integrated) 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.