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2002 toyota camry, tach wire?

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=94765
Printed Date: July 21, 2025 at 12:46 AM


Topic: 2002 toyota camry, tach wire?

Posted By: crystandslowjam
Subject: 2002 toyota camry, tach wire?
Date Posted: June 13, 2007 at 9:18 PM

Does anyone know where to geta a good Tach signal on this car.  Tried the Blk/Org wire at the sparks but got nothing.  Tryin to learn tach on a Prestige Aps-996a.  Pretty sure car does not have an immobilizer.  Thanks in Advance for your help.




Replies:

Posted By: peterubers
Date Posted: June 13, 2007 at 9:26 PM

on the 2.4l engine, the tach wire (BLACK/ orange) is at the data link connector under the driver side dash . on the 3.0l engine, the tach wire is at the ecm (engine control module) behind the glovebox, ia a 31-pin plug, pin 5.

i think the v6 models had the immobilizer -- do you have a v6 or i-4?



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Posted By: crystandslowjam
Date Posted: June 13, 2007 at 9:51 PM
2.4     I-4   LE model




Posted By: peterubers
Date Posted: June 13, 2007 at 11:48 PM
What are the symptoms at this point?  is the car cranking? not cranking?  ignition coming on?

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Posted By: Chris Luongo
Date Posted: June 14, 2007 at 6:55 AM
When you drop the driver's dash down, to the right of the steering column, there are about four plugs.

In the gray plug, there are two BLACK/ orange wires. One of these is tach. I think it's the one that's closer to the middle of the plug, but I can't remember for sure.

For Audiovox/Prestige remote starters, I've had the best results when programming the tach rate at slightly faster than normal idle...........

I like to enter programming mode, start the engine, and release the programming button after the very FIRST parking light flash, before the engine idle speed has a chance to settle down.




Posted By: crystandslowjam
Date Posted: June 14, 2007 at 5:30 PM
Thanks Chris...The ORANGE / blk  at the right side of the column, closest to the column did the trick.  Tach is now learned and alarm goes through the process of Trying to start the car.  All im getting at this point are about 5 or so lights on the dash, gas light, brake light, engine light etc.  They go off and the unit tries a 2nd attempt to start the car.  Any sure fire way of double checking  to make sure this doesn't have an immobilizer..  I don't have a spare key on my person.  I'm actually not sure about  the spare key..My Girlfriends car and this is a surprise.  Any help would be much appreciated on possible trouble shooting tips.




Posted By: Chris Luongo
Date Posted: June 14, 2007 at 8:51 PM
4-cylinder LE doesn't have an immobilizer.

But if you want to be doubly sure, look at the climate control panel. You've got the three knobs---fan, temperature, and airflow---to the right of that airflow selector would be the word "SECURITY" along with a red LED that flashes when the car is off.

Also, the immobilizer doesn't prevent the starter from cranking on Toyotas, it only prevents the engine from actually firing up and running.

It is possible that you've missed (or miswired) the small, BLACK / YELLOW second-starter wire.

There are two BLACK / YELLOWs in the steering column, both with the same size and appearance, so test carefully. One is Ignition 2, and the other is Starter 2. The car won't crank unless both starter wires are triggered.




Posted By: crystandslowjam
Date Posted: June 15, 2007 at 8:33 AM

Thanks again Chris...I believe this is my problem...Diagram Has Starter wire As BLACK/ white.  I have found the ignition wire and will wire it into the ign 2.  Question is how will I send a trigger to this second starter wire.  Remote has only one Start.  Can this be done through the 3rd optional ignition output on the alarm?





Posted By: peterubers
Date Posted: June 15, 2007 at 10:23 AM

You'll have to relay power from the r/s's only starter wire IF you cannot program that option 3rd ignition wire to become a starter wire (starter wire and igntion wires do totally different things at different times, so you cannot use the 3rd igntion wire for starter purposes).

Use a 40A, 12V SPDT 5 pin relay:

85: connection to 1st starter wire (use a bridging wire, as the 1st starter wire will be connected to the r/s's only starter wire)

86: chassis ground

87a: no connection

87: 2nd starter wire of Camry

30: 12 volts fused + (use 25A fuse minimum)



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Posted By: crystandslowjam
Date Posted: June 15, 2007 at 12:40 PM

The second Start wire was the problem.   I tied this wire into the output of the Relay goin to the Solenoid.  It works!!! I don't know if this is the correct way.  Does anyone see any problem with hook up?   Starter isn't grinding and everything works fine.  No check engine lights.  And probably the most important observation was the absence of any smoke.  You guys have been great. 





Posted By: peterubers
Date Posted: June 15, 2007 at 12:51 PM

Basically what you're done is what's called "bridging" of two wires.  You're using one starter wire (off the r/s brain) to power TWO factory starter wires.  Most guys will tell you that it's a "no no" but I've done it before and have not run into trouble.  You REALLY should rig the relay I described above and relay a fresh 12 fused volts to the second starter wire to insure that you'll have fewer issues with blown fuses in the future.

congrats on the install, nice work! (haha, no smoke is always a good thing)



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Posted By: crystandslowjam
Date Posted: June 18, 2007 at 2:05 PM
Thanks...I think I'll feel better doing it the right way. 




Posted By: peterubers
Date Posted: June 18, 2007 at 2:21 PM
yeah, those two starter wires are isolated by the manufacturer for a reason, and though I cannot specfically tell you the reason (we've discussed this many times on this site and never really came up with a good set of reasons), it's for the best that you maintain their indepedence with a relay.

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