2005 sienna 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=70770
Printed Date: May 14, 2025 at 8:36 PM
Topic: 2005 sienna tach wire
Posted By: maxcat
Subject: 2005 sienna tach wire
Date Posted: January 14, 2006 at 3:00 PM
hey guys, the data sheets on the 2005 toyota sienna say to go behind the glove box for the tach connection. does anyone know if this is correct, or can you use an injector wire in the engine compartement. I am just not sure how hard it will be to get behind, or remove the glove box. has anyone done one of these vehicles recently. any help or suggestions would be appreciated.
Replies:
Posted By: mike swanson
Date Posted: January 14, 2006 at 3:10 PM
use injector wire make sure that you dont use the same color as your IGN wire. its the wire that changes color on every injector.
Posted By: maxcat
Date Posted: January 14, 2006 at 3:20 PM
thanks mike, i will look for that.
Posted By: Mike M2
Date Posted: January 14, 2006 at 5:22 PM
You can get a good tach on the motor. The Sienna uses separate coils for each cylinder, it's always the 3rd wire from the left. Remove the plastic cover and they are easily in reach...
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Mike M2
Tech Manager
CS Dealer Services
Posted By: Chris Luongo
Date Posted: January 14, 2006 at 7:27 PM
Who wants to fish wires under the hood if you don't have to?
Open BOTH glove boxes, then reach into the upper one with your hand, grab it, and pull it out----it's just clips holding it in.
Then, reach in there and down to the ECM----it is behind the lower glove box but you can easily see it----the tachometer wire is in the top plug. If you unclip the plug, you can pull it straight and there's enough slack to work.
Also, there is a large bundle of wires high up above the gas pedal, and tach is in there. But it is awkward because you have to work on your back, and there are many BLACK/ orange wires in there and you would have to test a lot of them to find the right one. That is how I usually get the tach wire on Siennas, though.
Posted By: mo12v
Date Posted: January 14, 2006 at 7:36 PM
My FAT hands make it hard for me to go thru the Glove box, but I do.......I also use a Mirror to see the Plug
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MO
Don't Learn from Others Mistakes
You Might Be the One That Knows.
Posted By: Mike M2
Date Posted: January 14, 2006 at 9:13 PM
Who wants to run wires across the dash? Running into the engine compartment is easy, ther's a rubber nipple on the big grommet behind the fuse box. Cut off the nipple and shove the wire in the hole. There you go, your already in the engine compartment....
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Mike M2
Tech Manager
CS Dealer Services
Posted By: maxcat
Date Posted: January 14, 2006 at 10:01 PM
i agree with mike m2, you usually have to go into the engine compartement for a hood pin anyway. i also find this, easier than going across the vehicle. Thanks to all of you for the replies
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