PLEASE HELP! Thrown the same code for over a year!
Thread Starter
On The Tree
Joined: Mar 2004
Posts: 107
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From: OC, California
PLEASE HELP! Thrown the same code for over a year! P0704: The clutch circuit switch!.....This code is really startin to **** me off been on my dash for about a year. Supossedly its the clutch circuit swich problem, but I replaced the switch and keep clearing the code but it keeps coming back. Any advice or suggestion? Anyone else had this problem? Thanks guys! 
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Don't really know much about standards. See if this helps.
https://ls1tech.com/forums/showthrea...ighlight=P0704
https://ls1tech.com/forums/showthrea...ighlight=P0704
Teching In
Joined: Jan 2005
Posts: 18
Likes: 0
From: glendale AZ
[QUOTE=OCSSleeper]P0704: The clutch circuit switch!.....This code is really startin to **** me off been on my dash for about a year. Supossedly its the clutch circuit swich problem, but I replaced the switch and keep clearing the code but it keeps coming back. Any advice or suggestion? Anyone else had this problem? Thanks guys!
__________________[/QUOTe
with the key on and connector disconnected at the clutch switch check
for 12 volts on the gray wire and check to see that black/white wire goes
to ground-if both good and you are sure switch opens and close then check
clutch switch adjustment--switch is a normally closed switch--so when
clutch pedal is not depressed switch should be closed. Hope this helps
--its been my experience that the switch is out of adjust.
__________________[/QUOTe
with the key on and connector disconnected at the clutch switch check
for 12 volts on the gray wire and check to see that black/white wire goes
to ground-if both good and you are sure switch opens and close then check
clutch switch adjustment--switch is a normally closed switch--so when
clutch pedal is not depressed switch should be closed. Hope this helps
--its been my experience that the switch is out of adjust. 
On The Tree
Joined: Jan 2002
Posts: 107
Likes: 0
From: Round Rock, TX
I am not familiar with that code, but there are some detailed diagnostic steps listed here:
http://www.gearchatter.com/viewtopic8984.php
http://www.gearchatter.com/viewtopic8984.php
Teching In
Joined: Jan 2005
Posts: 18
Likes: 0
From: glendale AZ
Originally Posted by wait4me
it is just supposed to send a ground signal to the pcm when the petal is out, and when pressed leaves the circuit open, correct?,
when switch is closed when pedal is up voltage signal is pulled down because
blk/wht wire leads to grnd. And when pedal is depressed switch opens and
voltage goes high-I just read wait4me's post again and sounds like you are
saying the same thing
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TECH Resident
Joined: Jan 2003
Posts: 855
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From: AUSTIN TX
Just out of curiosity, is this code for the clutch safety switch (the one that prevents you from starting the car without depressing the clutch) or is it the clutch switch at the top of the travel used to deactivate the cruise control when you depress the clutch. I am asking because I plan on deleting both of these switches in the near future (actually I have already deleted the start safety switch). I plan on disconnecting the cruise control one and using that switch for a nitrous activation switch so that it will deactivate the N2O whenever the clutch is pressed.
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Verdad Gallardo ?? i wouldnt trust a switch like that with a motor,... But thats just me i guess, its not real accurate, and dissingages slow. on the switch, yes it it the other switch, not the one the prevents it from starting,
TECH Resident
Joined: Jan 2003
Posts: 855
Likes: 0
From: AUSTIN TX
Yea, I guess I should have been a little more specific... I actually plan to remove that switch, but use that bracket to mount a different switch in its place. In any event that switch would have to go and I had no idea it was interfaced with the computer. I hardly ever use the cruise control anyway and when I do I usually switch it off as soon as I start to slow down anyway, besides the brake will also disengage it so loosing the clutch disengagement function does not bother me, but having a constant code does. If I were to splice the gray to the blk/wht wire would that fool the computer into thinking the clutch was always up allowing use of the cruise control and preventing the code, or would I need to add a resistor in there or something to prevent it from shorting out the 12 volts from the gray wire.
Last edited by BOWTIE; Jan 25, 2005 at 06:57 PM. Reason: mis type