immobilizer plug on a lexus rx 330

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durf23112

Member - Posts: 21

Joined: December 28, 2014

Location: Virginia, United States

Posted: January 01, 2015 at 12:50 PM / IP Logged

can't seem to find the bad boy. Its a black 7 pin plug but the one I found attached underneath the igntiion barrel has different color wires than the install manuals says. Anyone know where I can tap into the RX and TX data lines. Very frustrating

jf durf

durf23112

Member - Posts: 21

Joined: December 28, 2014

Location: Virginia, United States

Posted: January 01, 2015 at 12:51 PM / IP Logged

BTW its a 2006 RX 330 with keyless entry but standard key start.

jf durf

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: January 01, 2015 at 1:37 PM / IP Logged

Try the body ECU, not sure what terminals.

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: January 01, 2015 at 1:42 PM / IP Logged

Appears to be a black plug on TOP, pins 4 & 5.

durf23112

Member - Posts: 21

Joined: December 28, 2014

Location: Virginia, United States

Posted: January 02, 2015 at 8:30 AM / IP Logged

I can't find any black 7 pin plugs on top of the ignition barrel. Been looking around for 3 days now. couple of questions: 1. is it attached to the barrel and 2. if on top how do I get to it?

jf durf

durf23112

Member - Posts: 21

Joined: December 28, 2014

Location: Virginia, United States

Posted: January 02, 2015 at 8:32 AM / IP Logged

BTW, thanks for replying. I even got Lexus dealer to print out the plug location and its there somewhere but I just can't find it. I know the pin locations and the wire colors. do I have to takethe ignition off to locate or whats the best to get at it. Any pics?

jf durf

howie ll

Pot Metal - Posts: 16,466

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Location: United Kingdom

Posted: January 02, 2015 at 8:33 AM / IP Logged

Yes should be attached to the barrel.

durf23112

Member - Posts: 21

Joined: December 28, 2014

Location: Virginia, United States

Posted: January 02, 2015 at 8:33 AM / IP Logged

would also be nice to know which ECU plug and pin have same two wires TX and Code. Any help much appreciated

jf durf

howie ll

Pot Metal - Posts: 16,466

Joined: January 09, 2007

Location: United Kingdom

Posted: January 02, 2015 at 8:34 AM / IP Logged

Trace the colours with care.

kreg357

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Joined: January 30, 2009

Location: Pennsylvania, United States

Posted: January 02, 2015 at 9:16 AM / IP Logged

It should be the standard 7 pin transponder plug found on many Toyota vehicles at the ignition switch. Pin 3 will be empty.

Pin 4 will be RX and Pin 5 will be TX. There is conflicting info as the the wires' color.

Here is the info from iDatalink :

RX pin 4 GREEN / WHITE (DATA)

TXCT pin 5 Blue / YELLOW (DATA)

Here is the info from DEI :

RX Immobilizer Pin 4 Light Green

TX Immobilizer Pin 5 Brown

Soldering is fun!

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Disclaimer: *All information on this site ( the12volt.com ) is provided "as is" without any warranty of any kind, either expressed or implied, including but not limited to fitness for a particular use. Any user assumes the entire risk as to the accuracy and use of this information. Please verify all wire colors and diagrams before applying any information.