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The ALDL Cable |
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Let's look at the ALDL (Assembly Line Diagnostic Link) OBD1 interface
cable first, since we sell low cost ALDL OBD1 interface cables. It may
possibly be the only thing you will need to buy to do your own
diagnostics. You can make your own cable, but it is much quicker and
less headache to buy one already assembled and tested. Our cables are
based on a
reliable and simple design, explained here. Under your
cars dash you will most likely see this style connector:
There are
other
styles of connectors, but the 12 pin OBD1 connector shown
above is the most common. Some 1994-95 cars have the 16 pin OBD2
connector (shown below), Corvette's, Camaro's, and LT1 cars among
them. Even though it is an OBD2 connector, it has an OBD1 system
behind it on these 94-95 cars. If you have a 94 or 95 car with the 16
pin connector,
we sell 16 pin connector shell cables for it here.
Make sure you
buy the correct
ALDL cable setup for your car or cars. Full descriptions are on
our order page.
You can buy an ALDL Cable with an OBD1 connector shell, or a cable
with just a bare male pin, to plug into your cars female connector
serial data pin location (pin M or E or 9 on the diagrams above). The
ALDL cable with the male OBD1 connector shell will allow you to just
feel under the dash and plug the cable in. The cable with just the
bare pin requires you to look under the dash and plug into the correct
pin on the car side of the connector. If you have a car with an OBD
connector other than the standard 12 pin OBD1 connector, you should
buy the bare pin cable. The bare pin cable should work on any OBD1
car, but is somewhat less convenient to use.
The Quick Paper Clip Test
Since we are looking at the connector pins, it should be mentioned
here that a quick method to see which trouble code or codes are being
set in your cars ECM is to jumper the A and B pins of the 12 pin ALDL
OBD1 connector with a paper clip. While the car is off, sitting still,
turn the ignition key forward while this jumper is in place. Do not
start the car. The Service Engine Soon ( SES ) light will flash in a
repeating sequence, telling which trouble codes have been set in the
ECM. A service manual for your year car will have a chart outlining
what each trouble code stands for, or this
Trouble
Code website can be of help. This paper clip method will tell
you the trouble code or codes set in your ECM, but it will not tell
you what conditions the trouble code is being set under, or let you
clear the trouble codes on the fly, as the ALDL cable and PC setup
will. |
Thank you for shopping with us,
Tuner Tools
management
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eCommerce
Templates |
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Tuner Tools, LLC is a new (2006) start up company bringing to market high
quality and intuitively combined packages of automotive scanning,
diagnostic, tuning and test equipment as well as the necessary hardware,
cabling, software, laptops and pda components for complete tuning solutions
for the modern high performance tuning of todays automobile systems.
