CAN Communication line check

CAN communication circuit inspection (AFLS ↔ Cluster)
1. Ignition "OFF"
2. Disconnect AFLS connector and Cluster connector.
3. Measure the resistance between the CAN High terminal connected to the AFLS connector and the CAN High terminal connected to the Cluster connector.
4. Measure the resistance between the CAN Low terminal connected to the AFLS connector and the CAN Low terminal connected to the Cluster connector.
  Specification: Approx below 1Ω
  
  Fig 1: Measuring Resistance Between CAN-HIGH/LOW Terminal Of Cluster And AFLS
  Courtesy of HYUNDAI MOTOR AMERICA
5. Is the measured resistance within specification?
  YES
  - Check AFLS, Cluster 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.
  - Go to next procedure.
  NO
  - If the measured value is ∞ Ω, repair or replace the open in CAN High/CAN Low circuit. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
CAN communication circuit inspection (AFLS ↔ Cluster)
1. IG KEY OFF.
2. Measure resistance between CAN high terminal (# 3) of diagnostic connector and chassis ground.
3. Measure resistance between CAN low terminal (# 11) of diagnostic connector and chassis ground.
  
  Fig 2: Measuring Resistance Between Can High/Low Terminal No. 3 And 11 Of Diagnostic Connector And Chassis Ground
  Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured resistance within specification?
  YES
  - Check all 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.
  - Go to next procedure.
  NO
  - Check for short to ground in harness.
  - Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
CAN communication circuit inspection (AFLS ↔ Cluster)
1. IG key "OFF".
2. Remove the connectors of AFLS and Cluster.
3. Measure the resistance between the terminal #3 and #11 of the Data Link Connector.
  Specification: Approx. 60 Ω
  
  Fig 3: Measuring Resistance Between Terminal No. 3 And No. 11 Of Data Link Connector
  Courtesy of HYUNDAI MOTOR AMERICA
4. Is the measured resistance within specification?
  YES
  - Check AFLS, Cluster and Cluster 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.
  - Go to next procedure.
  NO
  - Substitute with a known-good "AFLS, Cluster" and check for proper operation. If the problem is corrected, replace "AFLS, Cluster" and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.