Signal Circuit Inspection

Ignition "ON" & Engine "OFF".
Disconnect the "TCM" connector.
Measure the resistance between terminal "3" and "4" of the TCM harness connector.
Specification: 60 Ω

Fig 1: Identifying Resistance Between Terminal And Of TCM Harness Connector
Courtesy of HYUNDAI MOTOR CO.
Is measured resistance within specifications?
YES : → Substitute a known good TCM and check for proper operation. If the problem is corrected, replace the TCM, then go to "VERIFICATION OF VEHICLE REPAIR".

NO : → Check connection for looseness, poor connection, bending, corrosion, contamination, deterioration or damage of ECM And then repair or replace resistance for CAN communication as necessary and tgo to "VERIFICATION OF VEHICLE REPAIR".