Signal Circuit Inspection

WARNING: This page is about a different variant/trim than selected.

■ All Circuit Inspection

Ignition "OFF".
Measure resistance between CAN high terminal and CAN low terminal of Data Link Connector.
Specification: Approx. 60 Ω ± 10Ω (PCM connector connected)

Fig 1: Measuring Resistance Between CAN High And Low Terminal Of Data Link Connector
Courtesy of HYUNDAI MOTOR AMERICA

Fig 2: Identifying Control Units Connector Terminals
Courtesy of HYUNDAI MOTOR AMERICA
Is the measured resistance within specifications?
YES
- Go to "Resistance Inspection" procedure below.
NO
- Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM and Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

■ Resistance Inspection

Ignition "OFF".
Disconnect "PCM/TCM" connector.
Measure resistance between CAN high terminal and CAN low terminal of PCM/TCM harness connector.
Specification: Approx. 120 Ω ± 10Ω (Disconnect PCM connector)

Fig 3: Measuring Resistance Between CAN High And Low Terminal Of PCM/TCM Harness Connector
Courtesy of HYUNDAI MOTOR AMERICA

Fig 4: Identifying Control Units Connector Terminals
Courtesy of HYUNDAI MOTOR AMERICA
Is the measured resistance within specifications?
YES
- Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM and Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage and resistor for CAN communication is open. Repair as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.