CAN communication Line Inspection
WARNING: This page is about a different variant/trim than selected.
■ Check CAN communication
- Connect all of control module connector.
- IG KEY ON.
- Make CAN communication is wake up status (Ex.. ON/OFF Door SW)
- Measure signal waveform of B-CAN-HIGH terminal of SMK connector and chassis ground.
- Measure signal waveform of B-CAN-LOW terminal of SMK Module connector and chassis ground.
Specification: Refer to SIGNAL WAVEFORM AND DATA
Courtesy of HYUNDAI MOTOR AMERICA
- Is the measured signal waveform normal?
YES
- Go to next procedure.
NO
- If the measured value is battery voltage, check short to battery in CAN line. Repair or replace as necessary. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure. In case that Communication is in sleep mode, 12V will be measured. Therefore, check that communication is in Wake up status.
If 0V is detected, Check short to ground, short between CAN high and low each other or open in CAN high or CAN low harness. Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
■ Check open in CAN communication line
- IG KEY OFF.
- Disconnect BCM (IPM), CLU (Cluster), PDM (Power Distribution Module), SMK (Smart Key), RPAS (Rear Parking Assist System) connector.
- Measure resistance between communication line terminal of Smartkey Module connector and communication line of PDM harness connector.
Specification: About below 1
Courtesy of HYUNDAI MOTOR AMERICA
- Is the measured resistance within specification?
YES
- Check poor connection between harness connector and Smartkey Module or PDM.
: Thoroughly check the looseness, poor connection, bent, corrosion, contamination, deformation or damage of connector. Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Repair or replace open in CAN communication line and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
- Check poor connection between harness connector and Smartkey Module or PDM.