A data line has been diagnosed as being shorted to ground. Which ...

[washai]

Question 1

A data bus is being checked for voltage activity. Both the DMM and the oscilloscope show a constant zero volts with the key on or off. This indicates ________.
◦ A sleeping module
◦ The data line is shorted to ground
◦ Normal activity
◦ None of these

Question 2

A data line has been diagnosed as being shorted to ground. Which of these would be the next step in diagnosing this problem?
◦ Unplug modules one at a time and re-test the data line
◦ Disconnect the battery and then test the data line
◦ Replace the BCM
◦ Replace the alternator

[InfiniteSteez]

Answer 1

The data line is shorted to ground

Answer 2

Unplug modules one at a time and re-test the data line

[washai]

Excellent

[scottmt]

TYSM