A technician is diagnosing a multiplexed data network issue on a truck. The diagnostic tool shows communication with some modules but not others. What is the MOST likely cause?

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Multiple choice — select the best answer

AFaulty diagnostic tool
BLow battery voltage
CCorrupted software in all modules
DOpen circuit in the data bus wiring

✓ Correct answer: D. Open circuit in the data bus wiring When some modules communicate but others don't in a multiplexed network, the most likely cause is an open circuit in the data bus wiring that is preventing communication with specific modules while allowing others to function.

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A technician is diagnosing a multiplexed data network issue on a truck. The diagnostic tool shows communication with some modules but not others. What is the MOST likely cause?

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