Diagnostic Plug, What is it for exactly? My 2 wires are cut off

[1batt4u]

Hi all,

My diagnostic plug, 2 wires on it, that are together are cut off! I need to buy a new diagnostic plug!! What exactly is it for??

[deloumis]

You don't need it really, it does nothing.

http://dmctalk.org/showthread.php?4043-diagnostics-plug&highlight=diagnostic

[1batt4u]

You don't need it really, it does nothing.

http://dmctalk.org/showthread.php?4043-diagnostics-plug&highlight=diagnostic

Cool, thanx!!! :-)

[David T]

That is not completely true. If the plug is missing and the wires are cut you must make sure the ends do not ground out. You have + 12 volts there and the wire from the Lambda ECU. Bad things will happen if they should short to ground. It would be useful to be able to access the Lambda wire. Someday you may want to read the duty cycle on the Frequency valve.
David Teitelbaum