The following statements are all correct EXCEPT ________.

[corkyiscool3328]

The following statements are all correct EXCEPT ________.
◦ Knock sensors require voltage input from the PCM to function properly.
◦ Ignition timing may be either ATDC, at TDC, or BTDC.
◦ When the PCM detects detonation using the knock sensor, it will retard ignition timing.
◦ The knock sensor may be ignored by the PCM at idle.

[brittanywood]

Knock sensors require voltage input from the PCM to function properly.

[corkyiscool3328]

Excellent

[amandanbreshears]

Wow, this really help