Speed Circuit Sensor for NAV System
Discussion
Hello Everyone!
I have had the most trouble getting my Pioneer AVIC-N2 Navigation System working properly. The shop believes that the big reason is that they cannot find the speed sensor. I told them that it is supposed to be located near the top of the transmission, but they could not find/verify it. Therefore, they had to put speed sensing magnets near my rear tires in order to have the nav pickup my position. The magnets keep falling off every couple of miles, so this has not been a good fix either. the next step is to buy a Pioneer nd-pg1 speed pulse generator, which cost about $215. Before I do that, I would like the stereo shop to try and find the speed sensor again. Could one of you please give me some specific instructions and location of where to find the speed sensor circuit? I've spend over $2k for the entire system thus far, so I would like to exhaust my options before spending more money! photos would also help tremendously!
Another reason for this problem may be that my reverse backup lights do not work for some reason. It may have something to do with the 2004 taillight conversion I performed. Maybe everything is not hooked up right.... Any help with these issues will be greatly appreciated as I am getting really frustrated with the nav system. It cost way too much for it not to be dead-on!!!
Thanks
I have had the most trouble getting my Pioneer AVIC-N2 Navigation System working properly. The shop believes that the big reason is that they cannot find the speed sensor. I told them that it is supposed to be located near the top of the transmission, but they could not find/verify it. Therefore, they had to put speed sensing magnets near my rear tires in order to have the nav pickup my position. The magnets keep falling off every couple of miles, so this has not been a good fix either. the next step is to buy a Pioneer nd-pg1 speed pulse generator, which cost about $215. Before I do that, I would like the stereo shop to try and find the speed sensor again. Could one of you please give me some specific instructions and location of where to find the speed sensor circuit? I've spend over $2k for the entire system thus far, so I would like to exhaust my options before spending more money! photos would also help tremendously!
Another reason for this problem may be that my reverse backup lights do not work for some reason. It may have something to do with the 2004 taillight conversion I performed. Maybe everything is not hooked up right.... Any help with these issues will be greatly appreciated as I am getting really frustrated with the nav system. It cost way too much for it not to be dead-on!!!
Thanks
The VSS is located on the right rear wheel hub. If all they need is a signal for the nav system I would think they could tap into the signal wire going to the speedo under the binnacle.
I'm not that familiar with how nav systems work but there are others here who have installed them so maybe they will chime in.
As for the reverse lights, it almost has to be a problem in how the new tailights came wired, maybe a missing ground...
Good luck,
Jim
>> Edited by jk1 on Sunday 10th July 14:52
I'm not that familiar with how nav systems work but there are others here who have installed them so maybe they will chime in.
As for the reverse lights, it almost has to be a problem in how the new tailights came wired, maybe a missing ground...
Good luck,
Jim
>> Edited by jk1 on Sunday 10th July 14:52
Solution...
Wire in an alternate sensor. Don't know about Pioneer, but Alpine have a small sensor box that mounts on top of the front wheel well (inside/under the bonnet). You then use a "wand" to magnetize the tire (tyre). The sensor then knows if you are moving (and can estimate the rotation of the tire/tyre) and that is all that is really required for the NAV to work correctly. I have been using this system in the V8 for years...
Edited to add:
See the small grey box on top of the wheel well? That's the sensor.
Alpine system feature on www.espritv8.com :
Click Here
ErnestM
>> Edited by ErnestM on Sunday 10th July 15:11
Wire in an alternate sensor. Don't know about Pioneer, but Alpine have a small sensor box that mounts on top of the front wheel well (inside/under the bonnet). You then use a "wand" to magnetize the tire (tyre). The sensor then knows if you are moving (and can estimate the rotation of the tire/tyre) and that is all that is really required for the NAV to work correctly. I have been using this system in the V8 for years...
Edited to add:
See the small grey box on top of the wheel well? That's the sensor.
Alpine system feature on www.espritv8.com :
Click Here
ErnestM
>> Edited by ErnestM on Sunday 10th July 15:11
ErnestM,
That's the same thing as the Pioneer nd-pg1. It's been very hard to find one here in the states, but I have seen it for sale on websites from Europe costing $214 and up. I'm sure that this will work, but judging from the Pioneer navigation forums that I have visited, I really shouldn't have to buy it unless it's my last resort.
Dr. Hess,
I too had an antenna and wires from a car phone that had been mounted, but I do not see any other wires besides the antenna that I de-installed. I was on a forum just this morning and one of the threads states that the speed pulse wire is at the rear of the instrument cluster and is orange/brown (www.delta-autotronics.com/Speedsensors.htm). It also stated that the 1991 Esprit is on the ecu to the left behind the pin 60 and is also orange/brown.
I am hopeful that someone can confirm this info and tell me what the next step is after I have successfully located this orange/brown wire.
That's the same thing as the Pioneer nd-pg1. It's been very hard to find one here in the states, but I have seen it for sale on websites from Europe costing $214 and up. I'm sure that this will work, but judging from the Pioneer navigation forums that I have visited, I really shouldn't have to buy it unless it's my last resort.
Dr. Hess,
I too had an antenna and wires from a car phone that had been mounted, but I do not see any other wires besides the antenna that I de-installed. I was on a forum just this morning and one of the threads states that the speed pulse wire is at the rear of the instrument cluster and is orange/brown (www.delta-autotronics.com/Speedsensors.htm). It also stated that the 1991 Esprit is on the ecu to the left behind the pin 60 and is also orange/brown.
I am hopeful that someone can confirm this info and tell me what the next step is after I have successfully located this orange/brown wire.
On the S4 and the 98 there is a yellow with grey (slate) stripe and purple with yellow stripe from the sensor to the ECM. Plug J3, pins C2 and C8 respectively. I would assume the 97 is the same, but I can't find it on the 97 specific schematic, which could be because I am using the scanned PDF version or because Lotus screwed up when they drew the thing or because I just missed it.
With the electronic speedo, there looks to be an orange wire with brown stripe going from the ECM Pin 60 to the speedo. The only other wires going to the speedo are a green for power and a black, likely for ground, but I didn't trace the black out past the junction. I would guess this to have a VSS pulse for the speedo.
I spliced in between the sensor itself and the ECM on my 89 non-SE.
Dr.Hess
With the electronic speedo, there looks to be an orange wire with brown stripe going from the ECM Pin 60 to the speedo. The only other wires going to the speedo are a green for power and a black, likely for ground, but I didn't trace the black out past the junction. I would guess this to have a VSS pulse for the speedo.
I spliced in between the sensor itself and the ECM on my 89 non-SE.
Dr.Hess
I don't have a navigation system, but from my understanding, there should be one or two wires for the VSS trigger. If there is one, I would hook it to the wire at the speedo. If there are two and they are independant of the rest of the circuit, that is, one is not grounded, then I would hook them to the two wires between the sensor itself at the wheel and the ECM. BTW, the two wires going to the ECM are a twisted pair. THat means they are twisted together and they should be the only ones like that going to the ECM.
Dr.Hess
Dr.Hess
Gassing Station | Esprit | Top of Page | What's New | My Stuff