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Speedometer doesn't work, and no O/D

Old Apr 20, 2012 | 12:16 PM
  #21  
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Yeah I kinda had that thought this morning. I'm probably just gonna drive it to my work for a few so I can put it on the lift before taking it home. Lol

There was a break in the black/light blue wire, I put that back together. And I had 8V at I believe it was the orange wire but i'll have to check again. If I remember right I also had like 5V on the white/orange but i'll recheck that once I get it to the shop.
 
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Old Apr 20, 2012 | 05:32 PM
  #22  
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Lemme know what ya find.
 
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Old Apr 20, 2012 | 06:02 PM
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You are disconnecting the negative battery cable while repairing those wires correct? A simple pcm reset might help after the wires were/are fixed.
 
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Old Apr 20, 2012 | 08:48 PM
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Well I do have 8.5 volts at the orange wire with the key on, I do have continuity to ground on the black/blue wire with the key on or off, and I have about 5 volts to the white/orange wire when the wheels are moving, and I one of the codes I have is a code 15, which is no VSS signal. Any thoughts? Still no gauge, overdrive, or tcc lockup
 
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Old Apr 20, 2012 | 08:50 PM
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I take that back I have 5 volts to the white/orange wire when the ignition is on whether the wheels are spinning or not
 
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Old Apr 20, 2012 | 08:54 PM
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That's a new VSS isn't it?? Same value whether wheels are turning or not? I would say it's bad...... or, the gear isn't engaging the drive on the output shaft of the trans....

Can you pull the VSS out of the trans, and spin the gear with a drill, or some such, and get a different value?
 
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Old Apr 20, 2012 | 08:56 PM
  #27  
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Yeah same value volts DC, volts AC it seems to vary a bit brand new sensor, I'll try to find a drill to test that.
 
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Old Apr 20, 2012 | 09:00 PM
  #28  
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Actually I have 5 volts at the white/orange wire if I unplug it from the sensor completely
 
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Old Apr 20, 2012 | 09:01 PM
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I wish I knew what the return "signal" actually was..... unfortunately, I don't have any documentation that tells me..... It might be a modified A/C signal....... and the pcm looks at the frequency. I just don't know....

EDIT: Yep, gonna need an O-scope to see what the output signal REALLY looks like. It's a pulse signal, frequency determined by vehicle speed. Great.

I suppose, the next trick would be to check and see if you are getting signal voltage back to the PCM......
 

Last edited by HeyYou; Apr 20, 2012 at 09:03 PM.
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Old Apr 20, 2012 | 09:22 PM
  #30  
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Yep the orange has 8 volts up at the pcm connector, the white/orange has 5 volts, and the black/blue still has continuity to ground
 
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