Practice question

A J1939 network measures about 60 ohms across CAN High and CAN Low with the key off. This indicates:

  1. One terminating resistor is missing
  2. The bus has a dead short
  3. Both 120-ohm terminating resistors are present and the bus is properly terminated
  4. The network is open everywhere

Answer: C — Both 120-ohm terminating resistors are present and the bus is properly terminated

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