Mechanics

BUICK LESABRE TERMINAL PROBLEM

1994 Buick Lesabre • 140,000 miles

Jump 5 to 6 on diagnostic connector no flashes any suggestions
Avatar
Steve @44
February 7, 2013.



If that is a 16 pin datalink connector, a jumper wire won't work. At the least, you need an obd2 code reader, plugs into the datalink connector. Your local autostore should sell an obd2 code reader. Some national brand autostores will check codes for free.

JDL
Feb 7, 2013.
It is a 16 pin Ben to autozone and 2 other auto parts stores all scans come up no data connection

Tiny
Steve @44
Feb 7, 2013.
Pin 16 should be voltage, any voltage on that pin? If no voltage, the datalink connector wont work.

Are you having any driveability issues with vehicle?

JDL
Feb 7, 2013.
Yes the idols is up to 2500 rpm does at start up if I pull connectionconnection to IAc Idol drops down

Tiny
Steve @44
Feb 7, 2013.
Did you clean the throttle-body and idle air control? What about pin 16 on the datalink connector, use a testlite, any voltage?

JDL
Feb 8, 2013.
Just to add, You can check resistance across A & B terminals, then C & D terminals, 40--80 ohms. If not as specified replace iac.

Check resistance between B & C, then A & D terminals, infinite resistance, If not replace iac.

It sounds to me like the iac is working correctly. With engine idling, block off the mouth of throttle-body, does it kill the engine?

JDL
Feb 8, 2013.
These take a unique scanner/software to read. They are partially OBD1 & OBD2, oddballs.

What problem are you having?

Tiny
Jesse777
Feb 10, 2013.